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  • 1. Ashokkumar, Thanganadar
    et al.
    Rajadurai, Arunachalam
    Gouthama,
    Hussami, Linda L.
    KTH, Skolan för kemivetenskap (CHE), Kemi, Tillämpad fysikalisk kemi.
    A study of densification and on factors affecting the density of Ni (x)-Fe100-x nanopowders prepared by mechanical alloying and sintered by spark plasma2013Ingår i: The International Journal of Advanced Manufacturing Technology, ISSN 0268-3768, E-ISSN 1433-3015, Vol. 65, nr 9-12, s. 1201-1213Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Mechanical alloying through high-energy ball milling was used in the production of Ni-Fe alloy powders from elemental Ni and Fe powders of average particle size 80 and 25 mu m, respectively. High-energy planetary ball milling at room temperature was performed for various time durations ranging between 2 and 100 h. SPS apparatus was used for sintering of powder particles. Density of all specimens was reported and a maximum densification of 99 % was achieved in 50 wt.% Ni-Fe milled for 16 h prior to spark plasma sintering at 1,223 K.

  • 2.
    Cedergren, Stefan
    et al.
    Department of Materials and Manufacturing Technology, Chalmers University of Technology, 41296, Gothenburg, Sweden, Research and Technology Centre, GKN Aerospace Engine Systems, 46181, Trollhättan, Sweden.
    Frangoudis, Costantinos
    KTH, Skolan för industriell teknik och management (ITM).
    Archenti, Andreas
    KTH, Skolan för industriell teknik och management (ITM), Industriell produktion.
    Pederson, Robert
    Research and Technology Centre, GKN Aerospace Engine Systems, 46181, Trollhättan, Sweden.
    Sjöberg, Göran
    Research and Technology Centre, GKN Aerospace Engine Systems, 46181, Trollhättan, Sweden.
    Influence of work material microstructure on vibrations when machining cast Ti-6Al-4V2015Ingår i: The International Journal of Advanced Manufacturing Technology, ISSN 0268-3768, E-ISSN 1433-3015, s. 1-15Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Titanium alloys are known to produce shear-localized chips during machining, resulting in cyclic variations in cutting forces which in turn could cause severe problems with vibrations. However, at low cutting speeds and feed rates, continuous chips are formed, with an increase in both parameters favoring the transition to shear-localized chips. This transition is affected by work material microstructure, where a coarse microstructure gives anisotropic effects, e.g., when the size of alpha colonies is on the same order of magnitude as the primary cutting zone. The change in chip morphology with an increase in cutting parameters will then be dependent on the orientation of alpha colonies within the cutting zone. The microstructure of work material can show large variations depending on product form, e.g., cast, wrought, or sheet material, thus affecting whether the chip formation is isotropic or anisotropic. Other sources of variations also exist that can be found within the same component, such as segregation of alloying elements and differences in thermo-mechanical history during processing due to geometry. In this study, the interaction between work material microstructure, process parameters, and the machining system’s structural characteristics is studied. The aim is to further increase the knowledge about vibrations during machining of titanium and the role of microstructure and machining system properties. Different microstructures were produced by adding boron to cast Ti-6Al-4V material, where the resulting colony sizes gave both isotropic and anisotropic chip formation within the chosen cutting data range. The machining systems dynamic properties were varied by using different tool overhangs, thereby simulating different configurations of natural frequencies and stiffness. The results show the influence of both microstructure and machining system’s structural characteristics on the dynamic response of the system for different process parameters. This information can be used to increase robustness of machining operations taking into consideration this three-way relationship.

  • 3. Feng, Hsi-Yung
    et al.
    Han, Zhengyu
    Banerjee, Avisekh
    Wang, Lihui
    University of Skövde.
    A Composite Fitting Model of Discrete Handbook Data for Peripheral End Milling2009Ingår i: The International Journal of Advanced Manufacturing Technology, ISSN 0268-3768, E-ISSN 1433-3015, Vol. 44, nr 5-6, s. 437-446Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Machining data handbooks are important reference books in the machining industry, as they provide recommended process parameter values for common machining operations. The machining data, although covering a wide range of relevant cutting conditions, are only listed under discrete cutting conditions. Rough interpolation-based calculations are often needed in order to estimate the process parameter values at the desired cutting condition. In this work, a compositefitting model is presented to fit a composite functional curve through the discrete handbook data of recommended cutting speeds and feeds with respect to the cutting condition of radial depth of cut for peripheral end milling. The objective is to establish a functional relationship from the handbook data such that recommended cutting speed and feed can be obtained for any given radial depth of cut. According to the tabulated layout of the machining data, the entire range of the radial depth of cut is divided into three segments having distinctive formulations and trends. Constraints are then imposed to preserve the trends and smoothly connect the adjacent segments. As a possible application of the presented model, a case study of machining a rectangular pocket is provided. Machining time of a potential process plan is readily evaluated based on the cutting speeds and feeds obtained from the composite model.

  • 4.
    Feng, Lei
    et al.
    KTH, Skolan för industriell teknik och management (ITM), Maskinkonstruktion (Inst.).
    Cai, Kai
    Wonham, W. M.
    A structural approach to the non-blocking supervisory control of discrete-event systems2009Ingår i: The International Journal of Advanced Manufacturing Technology, ISSN 0268-3768, E-ISSN 1433-3015, Vol. 41, nr 11-12, s. 1152-1168Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Many practical and important systemic properties of manufacturing systems, like deadlock freeness, liveness, and reversibility, can be formulated as the non-blocking property of discrete-event systems. It can be difficult, however, to verify non-blocking or design a supervisor to guarantee non-blocking control because of state size explosion in the concurrency model. In this paper, we present sufficient conditions for the computation of (small) model abstractions that preserve the non-blocking property. As a consequence, hierarchical and decentralized control structures can be flexibly integrated, and the proposed approach can synthesize maximally permissive and non-blocking control with reduced computational effort. The solution is a group of decentralized supervisors that transparently displays control logic and admits relatively simple implementation.

  • 5.
    Frangoudis, Constantinos
    et al.
    KTH, Skolan för industriell teknik och management (ITM), Industriell produktion.
    Rashid, Amir
    KTH, Skolan för industriell teknik och management (ITM), Industriell produktion.
    Nicolescu, Cornel Mihai
    KTH, Skolan för industriell teknik och management (ITM), Industriell produktion.
    Development and analysis of a consciously designed Joint Interface Module for improvement of a machining system's dynamic performance2017Ingår i: The International Journal of Advanced Manufacturing Technology, ISSN 0268-3768, E-ISSN 1433-3015, Vol. 88, nr 1-4, s. 507-518Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Machining vibrations and dynamic instability of machine tools is an important consideration in machining systems. Common approaches for improving their dynamic performance target either the process, or intelligent, yet complex control systems with actuators. Given that machine tools' dynamic characteristics are largely defined by the characteristics of the joints, this article proposes a novel concept, attempting to create a new paradigm for improving the dynamic behaviour of machine tools-introducing modular machine tools components (Joint Interface Modules-JIMs) with joints deliberately designed for increasing dynamic stiffness and enhancing damping with the use of viscoelastic materials. Through a systematic model-based design process, a prototype replicating a reference tool holder was constructed exploiting viscoelastic materials and the dynamic response of the machining system was improved as a result of its introduction; in machining experiments, the stability limit was increased from around 2 mm depth of cut to 4 mm depth of cut, without compromising the rigidity of the system or changing the process parameters. The article also includes the results of investigations regarding the introduction of such prototypes in a machine tool and discusses the shortcomings of the stability lobe diagrams as a method for evaluating the performance of machine tool components with viscoelastically treated joints.

  • 6.
    FU, Qilin
    et al.
    KTH, Skolan för industriell teknik och management (ITM), Industriell produktion, Maskin- och processteknologi.
    Rashid, Amir
    KTH, Skolan för industriell teknik och management (ITM), Industriell produktion, Maskin- och processteknologi.
    Constraining the shear strain in viscoelastic materials and utlization of the “incompressible” properties for damping treatment in hybrid joint interface module to improve their effect for vibration control in machining2016Ingår i: The International Journal of Advanced Manufacturing Technology, ISSN 0268-3768, E-ISSN 1433-3015, Vol. 83, nr 5, s. 1079-1097Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    A hybrid joint interface module (HJIM) was developed using viscoelastic materials’ (VEM) “incompressible” property. The HJIM composes VEM layers compressed by screws. Its static stiffness and damping had been characterized by inverse receptance method. The analysis result showed that its static stiffness increases by nearly 50 % with increasing compression preload without compromising its loss factor. A comparison study of HJIM with a viscoelastic material joint interface module (VJIM) revealed that the change of the screws mechanical contact conditions affected the HJIM’s stiffness. Compression preload by fastening the screws, however, did not significantly affect the damping property of the HJIM. On the contrary to shear pre-strain, compression preload did not affect the VEM’s properties shown by studying the VJIM case. A workpiece was studied while fixed on the HJIM. Varying compression preload affected the stiffness of HJIM and that resulted in increased shear strain in VEM for certain modes while decreased shear strain in VEM for other modes. The affected shear strain in VEM altered the vibrational strain energy distribution and changed the receptance amplitude of different modes. In addition to apply the VEM where it is significantly strained, the analysis revealed that constraining the shear strain in VEM resulted in reduced receptance amplitude for different modes. The changes of receptance will further affect the vibration conditions in machining.

  • 7.
    Fu, Qilin
    et al.
    KTH, Skolan för industriell teknik och management (ITM), Industriell produktion.
    Rashid, Amir
    KTH, Skolan för industriell teknik och management (ITM), Industriell produktion.
    Joint interface characterization method using frequency response measurements on assembled structures only: theoretical development and experimental validation on a workholding fixture for machining2015Ingår i: The International Journal of Advanced Manufacturing Technology, ISSN 0268-3768, E-ISSN 1433-3015, Vol. 77, nr 5-8, s. 1213-1228Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    A computation model based on inverse receptance coupling method is presented in this paper aiming for obtaining the joint interface's stiffness and damping properties using frequency response functions measured on assembled structures only. In the model, it is emphasized that the joint stiffness and damping should be modeled with frequency dependency. The model's validity is checked both through finite element (FE) simulation and experimental analyses. In the FE simulation example, the computation model gives more accurate results with noise-free data. In the experimental example, where noise in the data is unavoidable, the computation model is explored further for its applicability in the real industrial environment. Results from applications of the computational model show that it is even capable of obtaining the joint interface stiffness and damping values over the structure's resonance frequency. A viable process of predicting behaviors of workpiece with receptance coupling method through identifying the joint interface properties is presented in the end of the paper. The applicability of this computation model and the factors that influence the accuracy of the model are discussed in the end of the paper.

  • 8.
    Hardwick, Martin
    et al.
    Department of Computer Science, Rensselaer Polytechnic.
    Zhao, Yaoyao Fiona
    Department of Mechanical Engineering, McGill University.
    Proctor, Frederick M.
    Intelligent Systems Division, The National Institute of Standards and Technology NIST.
    Nassehi, Aydin
    Department of Mechanical Engineering, University of Bath.
    Xu, Xun
    Department of Mechanical Engineering, University of Auckland.
    Venkatesh, Sid
    Boeing Company.
    Odendahl, David
    Boeing Company.
    Xu, Liangji
    Boeing Company.
    Hedlind, Mikael
    KTH, Skolan för industriell teknik och management (ITM), Industriell produktion, Datorsystem för konstruktion och tillverkning.
    Lundgren, Magnus
    KTH, Skolan för industriell teknik och management (ITM), Industriell produktion, Datorsystem för konstruktion och tillverkning.
    Maggiano, Larry
    Mitutoyo America Corporation.
    Loffredo, David
    STEP Tools Inc..
    Fritz, Jochim
    STEP Tools Inc..
    Olsson, Bengt
    Sandvik Coromant.
    Garrido, Julio
    Vigo University.
    Brail, Alain
    Airbus.
    A roadmap for STEP-NC-enabled interoperable manufacturing2013Ingår i: The International Journal of Advanced Manufacturing Technology, ISSN 0268-3768, E-ISSN 1433-3015, Vol. 68, nr 5-8, s. 1023-1037Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    The STEP-NC-AP 238 and ISO 14649 standard is the result of a 10-year international effort to replace the RS274D (ISO 6983) G and M code standard with a modern associative language that connects the CAD design data used to determine the machining requirements for an operation with the CAM process data that is used in creating a machining solution to satisfy these requirements. STEP-NC builds on the previous 10 years effort to develop the STEP neutral data standard for CAD data, and uses the modern geometric constructs in that standard to specify device independent tool paths, and CAM independent volume removal features. STEP-Manufacturing, Team 24 in Working Group 3 (WG3) of ISO TC184/SC4, is developing and validating the STEP-NC standard in liaison with Working Group (WG7) of ISO TC184/SC1 who provides the domain-specific input (ISO 14649) used within the standard. This paper reviews the demonstrations carried out by STEP-Manufacturing over the past 10 years. These demonstrations have been international collaborations between industry, academia, and research agencies. Each demonstration focused on extending the STEP-NC data model for a different application.

  • 9. Ji, W.
    et al.
    Liu, X.
    Wang, Lihui
    KTH, Skolan för industriell teknik och management (ITM), Industriell produktion.
    Wang, G.
    Research on modelling of ball-nosed end mill with chamfered cutting edge for 5-axis grinding2016Ingår i: The International Journal of Advanced Manufacturing Technology, ISSN 0268-3768, E-ISSN 1433-3015, Vol. 87, nr 9-12Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    This paper presents models related to the manufacturing of ball-nosed end mills of solid carbide (BEMSC) with a chamfered cutting edge (CCE). A parallel grinding wheel (PGW) is selected, and the relationship between CCE face and PGW working face is determined. Based on the geometry models of BEMSC established in our previous work, the centre and axis vectors of PGW are calculated for the grinding of CCE face on bath the ball-nosed end and the cylinder, which is validated through a numerical simulation. In order to produce the tool, a grinding machine, SAACKE UMIF, is chosen. Targeting the grinding data of BEMSC, the transformations are carried out between the coordinate systems of workpiece and the NC programme according to the structural features of the machine. An algorithm is derived for dispersing grinding paths. As a result, the centre data and axis vector are generated with respect to the grinding machine. The BEMSC with CCE is machined using the selected machine, which demonstrates the correctness of the established models. Finally, the performance of the machined cutting tool is validated in comparison with a common BEMSC without CCE in the milling of a mould of a multi-hardness joint structure.

  • 10.
    Ji, Wei
    et al.
    KTH, Skolan för industriell teknik och management (ITM), Industriell produktion. Harbin Univ Sci & Technol, Harbin 150080, Peoples R China.
    Liu, Xianli
    Wang, Lihui
    KTH, Skolan för industriell teknik och management (ITM), Industriell produktion. Harbin Univ Sci & Technol, Harbin 150080, Peoples R China.
    Sun, Shilong
    Experimental evaluation of polycrystalline diamond (PCD) tool geometries at high feed rate in milling of titanium alloy TC112015Ingår i: The International Journal of Advanced Manufacturing Technology, ISSN 0268-3768, E-ISSN 1433-3015, Vol. 77, nr 9-12, s. 1549-1555Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Titanium alloys are widely used in aerospace industrial components characterised by high material removal rate, of which the machining efficiency is a big issue. Targeting the problem, this paper presents the experimental findings of milling of titanium alloy TC11 using polycrystalline diamond (PCD) cutting tool at high feed rate. First, in order to verify the capability of PCD in finish milling of titanium alloys at high feed rate, the surface roughness R-a is investigated under different PCD tool geometries (radial rake angle, axial rake angle and insert sharp radius), and the results indicate that its range is from 0.821 to 1.562 mu m, which is suitable to titanium components. Also, the main tool failure patterns, cutting edge fracture and flank face wear, are observed and classified. Based on the tool failure patterns, the relationship between tool life and tool geometries is established. In order to explain the reasons of tool failures, the relationships between cutting forces and the tool geometries are made clear. Finally, the processes of flank face wear and rake face wear of PCD insert are proposed to show its wear evaluations.

  • 11.
    Ji, Wei
    et al.
    KTH, Skolan för industriell teknik och management (ITM), Industriell produktion.
    Wang, Lihui
    KTH, Skolan för industriell teknik och management (ITM), Industriell produktion, Produktionssystem.
    Industrial robotic machining: a review2019Ingår i: The International Journal of Advanced Manufacturing Technology, ISSN 0268-3768, E-ISSN 1433-3015, Vol. 103, nr 1-4, s. 1239-1255Artikel, forskningsöversikt (Refereegranskat)
    Abstract [en]

    For the past three decades, robotic machining has attracted a large amount of research interest owning to the benefit of cost efficiency, high flexibility and multi-functionality of industrial robot. Covering articles published on the subjects of robotic machining in the past 30 years or so; this paper aims to provide an up-to-date review of robotic machining research works, a critical analysis of publications that publish the research works, and an understanding of the future directions in the field. The research works are organised into two operation categories, low material removal rate (MRR) and high MRR, according their machining properties, and the research topics are reviewed and highlighted separately. Then, a set of statistical analysis is carried out in terms of published years and countries. Towards an applicable robotic machining, the future trends and key research points are identified at the end of this paper.

  • 12.
    Lian, Binbin
    et al.
    KTH, Skolan för industriell teknik och management (ITM), Maskinkonstruktion (Inst.).
    Wang, Lihui
    KTH, Skolan för industriell teknik och management (ITM), Maskinkonstruktion (Inst.).
    Wang, Xi Vincent
    KTH, Skolan för industriell teknik och management (ITM), Maskinkonstruktion (Inst.).
    Elastodynamic modeling and parameter sensitivity analysis of a parallelmanipulator with articulated traveling plate2019Ingår i: The International Journal of Advanced Manufacturing Technology, ISSN 0268-3768, E-ISSN 1433-3015Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    This paper deals with the elastodynamic modeling and parameter sensitivity analysis of a parallel manipulator with articulated traveling plate (PM-ATP) for assembling large components in aviation and aerospace. In the elastodynamic modeling, the PM-ATP is divided into four levels, i.e., element, part, substructure, and the whole mechanism. Herein, three substructures, including translation, bar, and ATP, are categorized according to the composition of the PM-ATP. Based on the kineto-elastodynamic (KED) method, differential motion equations of lower levels are formulated and assembled to build the elastodynamic model of the upper level. Degrees of freedom (DoFs) at connecting nodes of parts and deformation compatibility conditions of substructures are considered in the assembling. The proposed layer-by-layer method makes the modeling process more explicit, especially for the ATP having complex structures and multiple joints. Simulations by finite element software and experiments by dynamic testing system are carried out to verify the natural frequencies of the PM-ATP, which show consistency with the results from the analytical model. In the parameter sensitivity analysis, response surface method (RSM) is applied to formulate the surrogate model between the elastic dynamic performances and parameters. On this basis, differentiation of performance reliability to the parameter mean value and standard variance are adopted as the sensitivity indices, from which the main parameters that greatly affect the elastic dynamic performances can be selected as the design variables. The present works are necessary preparations for future optimal design. They can also provide reference for the analysis and evaluation of other PM-ATPs.

  • 13.
    Lian, Binbin
    et al.
    KTH, Skolan för industriell teknik och management (ITM), Maskinkonstruktion (Inst.).
    Wang, Lihui
    KTH, Skolan för industriell teknik och management (ITM), Industriell produktion, Produktionssystem. KTH, Skolan för industriell teknik och management (ITM), Maskinkonstruktion (Inst.), Maskinkonstruktion (Avd.).
    Wang, Xi Vincent
    KTH, Skolan för industriell teknik och management (ITM), Industriell produktion, Produktionssystem. KTH, Skolan för industriell teknik och management (ITM), Maskinkonstruktion (Inst.), Maskinkonstruktion (Avd.).
    Elasto-dynamic modeling andparameter sensitivity analysis of a parallel manipulator with articulatedtraveling plate2019Ingår i: The International Journal of Advanced Manufacturing Technology, ISSN 0268-3768, E-ISSN 1433-3015, s. 1-17Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    This paper deals with the elastodynamic modeling and parameter sensitivity analysis of a parallel manipulator with articulated traveling plate (PM-ATP) for assembling large components in aviation and aerospace. In the elastodynamic modeling, the PM-ATP is divided into four levels, i.e., element, part, substructure, and the whole mechanism. Herein, three substructures, including translation, bar, and ATP, are categorized according to the composition of the PM-ATP. Based on the kineto-elastodynamic (KED) method, differential motion equations of lower levels are formulated and assembled to build the elastodynamic model of the upper level. Degrees of freedom (DoFs) at connecting nodes of parts and deformation compatibility conditions of substructures are considered in the assembling. The proposed layer-by-layer method makes the modeling process more explicit, especially for the ATP having complex structures and multiple joints. Simulations by finite element software and experiments by dynamic testing system are carried out to verify the natural frequencies of the PM-ATP, which show consistency with the results from the analytical model. In the parameter sensitivity analysis, response surface method (RSM) is applied to formulate the surrogate model between the elastic dynamic performances and parameters. On this basis, differentiation of performance reliability to the parameter mean value and standard variance are adopted as the sensitivity indices, from which the main parameters that greatly affect the elastic dynamic performances can be selected as the design variables. The present works are necessary preparations for future optimal design. They can also provide reference for the analysis and evaluation of other PM-ATPs.

  • 14.
    Lieder, Michael
    et al.
    KTH, Skolan för industriell teknik och management (ITM), Industriell produktion.
    A. Asif, Farazee M.
    KTH, Skolan för industriell teknik och management (ITM), Industriell produktion.
    Rashid, Amir
    KTH, Skolan för industriell teknik och management (ITM), Industriell produktion.
    Mihelič, Aleš
    Gorenje d.d..
    Kotnik, Simon
    Gorenje d.d..
    Towards circular economy implementation in manufacturing systems using a multimethod simulation approach to link design and business strategy2017Ingår i: The International Journal of Advanced Manufacturing Technology, ISSN 0268-3768, E-ISSN 1433-3015, Vol. 93, nr 5-8, s. 1953-1970Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    The recent circular economy movement has raised awareness and interest about untapped environmental and economic potential in the manufacturing industry. One of the crucial aspects in the implementation of circular or closed-loop manufacturing approach is the design of circular products. While it is obvious that three post-use strategies, i.e., reuse, remanufacturing, and recycling, are highly relevant to achieve loop closure, it is enormously challenging to choose “the right” strategy (if at all) during the early design stage and especially at the single component level. One reason is that economic and environmental impacts of adapting these strategies are not explicit as they vary depending on the chosen business model and associated supply chains. In this scenario, decision support is essential to motivate adaptation of regenerative design strategies. The main purpose of this paper is to provide reliable decision support at the intersection of multiple lifecycle design and business models in the circular economy context to identify effects on cost and CO2 emissions. The development of this work consists of a systematic method to quantify design effort for different circular design options through a multi-method simulation approach. The simulation model combines an agent-based product architecture and a discrete event closed-loop supply chain model. Feasibility of the model is tested using a case of a washing machine provided by Gorenje d.d. Firstly, design efforts for reuse, remanufacturing, and recycling are quantified. Secondly, cost and emissions of different design options are explored with different business model configurations. Finally, an optimization experiment is run to identify the most cost-effective combination of reused, remanufactured, and recycled components for a business model chosen on the basis of the explorative study results.

  • 15. Maalouf, Maher
    et al.
    Barsoum, Zuheir
    KTH, Skolan för teknikvetenskap (SCI), Farkost och flyg, Lättkonstruktioner.
    Failure strength prediction of aluminum spot-welded joints using kernel ridge regression2017Ingår i: The International Journal of Advanced Manufacturing Technology, ISSN 0268-3768, E-ISSN 1433-3015, Vol. 91, nr 9-12, s. 3717-3725Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    The current paper presents an alternative method for failure strength prediction of spot-welded joints in aluminum, based on nonlinear regression analysis, namely, the kernel ridge regression method. Welding parameters such as electrode force, welding current, and welding time are studied in the experimental investigation to measure their effects on the nugget size and failure strength of the resistance spot welds. Coupons are manufactured and tensile tested and the results show that the welding current and time have the largest effect on the nugget size and the failure strength. The results of this study are compared to those of the least squares method and they indicate that the truncated-regularized kernel ridge regression algorithm significantly improves the coefficient of determination and reduces the mean squared error.

  • 16.
    Meng, Yue
    et al.
    Harbin Univ Sci & Technol, Sch Mech & Power Engn, Harbin 150080, Heilongjiang, Peoples R China..
    Wang, Lihui
    KTH, Skolan för industriell teknik och management (ITM), Industriell produktion, Produktionssystem.
    Lee, Chen-Han
    Huazhong Univ Sci & Technol, Sch Mech Sci & Engn, Wuhan 430000, Hubei, Peoples R China..
    Ji, Wei
    KTH, Skolan för industriell teknik och management (ITM), Industriell produktion.
    Liu, Xianli
    Harbin Univ Sci & Technol, Sch Mech & Power Engn, Harbin 150080, Heilongjiang, Peoples R China..
    Plastic deformation-based energy consumption modelling for machining2018Ingår i: The International Journal of Advanced Manufacturing Technology, ISSN 0268-3768, E-ISSN 1433-3015, Vol. 96, nr 1-4, s. 631-641Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    To predict energy consumption in machining, a mathematical modelling method to mimic the cutting energy consumption during machining is proposed in this paper. The established model is based on the law of energy conservation. The mechanical material property coefficients and cutting parameters are included in the model by using material deformation theory and friction calculation which are used to represent the phenomena in machining. Cutting energy of material removal process is refined by analysing the effect of tool edge geometry. In addition, the machining process is divided into two machining elements, linear element and circular arc element, of which energy consumptions are established based on the principal theories above. Calculation method on the instantaneous cutting thickness for circular arc elements is proposed. Finally, a test example is given to validate the proposed modelling approach. With the proposed method, the separate impacts of the factors (e.g. cutting parameters, workpiece, tool) have been analysed and the physical background behind the known experimental dependence of the cutting parameters on cutting energy is revealed.

  • 17.
    Oosthuizen, Gert Adriaan
    et al.
    Department of Industrial Engineering, University of Stellenbosch, Maiteland, South Africa.
    Akdogan, Guven
    Department of Industrial Engineering, University of Stellenbosch, Maiteland, South Africa.
    Treurnicht, Nico
    KTH, Skolan för industriell teknik och management (ITM), Industriell produktion.
    The performance of PCD tools in high-speed milling of Ti6Al4V2011Ingår i: The International Journal of Advanced Manufacturing Technology, ISSN 0268-3768, E-ISSN 1433-3015, Vol. 52, nr 9-12, s. 929-935Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Tool performance of conventional tools is poor and a major constraint when used in milling titanium alloys at elevated cutting speeds. At these high cutting speeds, the chemical and mechanical properties of Ti6Al4V cause complex wear mechanisms. In this paper, a fine-grain polycrystalline diamond (PCD) end mill tool was tested, and its wear behavior was studied. The performance of the PCD tool has been investigated in terms of tool life, cutting forces, and surface roughness. The PCD tool yielded longer tool life than a coated carbide tool at cutting speeds above 100 m/min. A slower wear progression was found with an increase in cutting speeds, whereas the norm is an exponential increase in tool wear at elevated speeds. Observations based on scanning electron microscope (SEM) and energy dispersive spectroscopy (EDAX) analysis suggest that adhesion of the workpiece is the wear main type, after which degradation of the tools accelerates probable due to the combined effect of high temperature degradation coupled with abrasion.

  • 18.
    Pervaiz, Salman
    et al.
    KTH, Skolan för industriell teknik och management (ITM), Industriell produktion, Maskin- och processteknologi.
    Deiab, Ibrahim
    University of Guelph, CANADA.
    Wahba, Essam
    Mechanical Engineering, American University of Sharjah.
    Rashid, Amir
    KTH, Skolan för industriell teknik och management (ITM), Industriell produktion, Maskin- och processteknologi.
    Nicolescu, Mihai
    KTH, Skolan för industriell teknik och management (ITM), Industriell produktion, Maskin- och processteknologi.
    A novel numerical modeling approach to determine the temperature distribution in the cutting tool using conjugate heat transfer (CHT) analysis2015Ingår i: The International Journal of Advanced Manufacturing Technology, ISSN 0268-3768, E-ISSN 1433-3015, Vol. 80, nr 5, s. 1039-1047Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    This study deals with the conjugate heat transfer problem of a single point cutting tool under turning operation dissipating heat in the tool material and streams of the surrounding air. In order to estimate the cutting temperature during the turning operation, the DEFORM-3D finite element package was utilized. A machining simulation material model for Ti6Al4V was utilized using a modified Johnson–Cook equation. The maximum cutting temperature value was obtained from the finite element model. The temperature was then used as a constant heat source on the tool tip, and the conjugate heat transfer (CHT) approach was used to develop a computational fluid dynamics (CFD) model. The CFD model utilized a 3D heat and fluid flow analysis using ANSYS ® CFX. A cutting insert with a constant heat source was exposed to the stream velocities of the dry air. The numerical equations governing the flow and thermal fields in the fluid domain and energy equation in the solid domain were solved in parallel by maintaining the continuity of temperature and heat flux at the solid–fluid interface. The presented conjugate heat transfer (CHT) approach provided a very useful understanding of the temperature profile development at the cutting tool that is still a complex challenge for the existing experimental and numerical techniques.

  • 19. Pervaiz, Salman
    et al.
    Deiab, Ibrahim
    Wahba, Essam
    Rashid, Amir
    KTH, Skolan för industriell teknik och management (ITM), Industriell produktion.
    Nicolescu, Mihai
    KTH, Skolan för industriell teknik och management (ITM), Industriell produktion.
    A numerical and experimental study to investigate convective heat transfer and associated cutting temperature distribution in single point turning2018Ingår i: The International Journal of Advanced Manufacturing Technology, ISSN 0268-3768, E-ISSN 1433-3015, Vol. 94, nr 1-4, s. 897-910Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    During the metal cutting operation, heat generation at the cutting interface and the resulting heat distribution among tool, chip, workpiece, and cutting environment has a significant impact on the overall cutting process. Tool life, rate of tool wear, and dimensional accuracy of the machined surface are linked with the heat transfer. In order to develop a precise numerical model for machining, convective heat transfer coefficient is required to simulate the effect of a coolant. Previous literature provides a large operating range of values for the convective heat transfer coefficients, with no clear indication about the selection criterion. In this study, a coupling procedure based on finite element (FE) analysis and computational fluid dynamics (CFD) has been suggested to obtain the optimum value of the convective heat transfer coefficient. In this novel methodology, first the cutting temperature was attained from the FE-based simulation using a logical arbitrary value of convective heat transfer coefficient. The FE-based temperature result was taken as a heat source point on the solid domain of the cutting insert and computational fluid dynamics modeling was executed to examine the convective heat transfer coefficient under similar condition of air interaction. The methodology provided encouraging results by reducing error from 22 to 15% between the values of experimental and simulated cutting temperatures. The methodology revealed encouraging potential to investigate convective heat transfer coefficients under different cutting environments. The incorporation of CFD modeling technique in the area of metal cutting will also benefit other peers working in the similar areas of interest.

  • 20.
    Pervaiz, Salman
    et al.
    KTH, Skolan för industriell teknik och management (ITM), Industriell produktion.
    Rashid, Amir
    KTH, Skolan för industriell teknik och management (ITM), Industriell produktion.
    Deiab, I.
    Nicolescu, Cornel M.
    KTH, Skolan för industriell teknik och management (ITM), Industriell produktion.
    An experimental investigation on effect of minimum quantity cooling lubrication (MQCL) in machining titanium alloy (Ti6Al4V)2016Ingår i: The International Journal of Advanced Manufacturing Technology, ISSN 0268-3768, E-ISSN 1433-3015, Vol. 87, nr 5-8, s. 1371-1386Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    During the machining operation, elevated temperatures are achieved at the cutting interface due to the presence of high plastic deformation and friction in between the tool and chip contacting area. Efficient heat dissipation from the cutting interface is required to achieve better machining performance. Elevated temperature in the cutting area results in lower tool life as it facilitates different types of wear mechanisms. Metal working fluids (MWFs) are employed to reduce heat and friction in the cutting zone, simultaneously to help in the flushing of waste particles. The MWFs are based on either water or petroleum oil and include several additives which make them non-biodegradable and toxic in nature. The minimum quantity lubrication (MQL) method offers a feasible substitute to the MWF-based conventional flood cooling method. In this study, a vegetable oil-based MQL system was mixed with sub-zero temperature air to design a new minimum quantity cooling lubrication (MQCL) system. The study investigates the machinability of Ti6Al4V using an MQCL system under various oil flow rates and compared its machining performance with both dry cutting and conventional flood cooling. For further evaluation, the study investigated surface roughness, flank wear, and associated wear mechanisms. It was found that in the MQCL system (60–70 ml/h), oil supply rates provided reliable machining performance at higher feed levels.

  • 21. Schmidt, Björn
    et al.
    Wang, Lihui
    KTH, Skolan för industriell teknik och management (ITM), Industriell produktion, Produktionssystem.
    Cloud-enhanced predictive maintenance2018Ingår i: The International Journal of Advanced Manufacturing Technology, ISSN 0268-3768, E-ISSN 1433-3015, Vol. 99, nr 1-4, s. 5-13Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Maintenance of assembly and manufacturing equipment is crucial to ensure productivity, product quality, on-time delivery, and a safe working environment. Predictive maintenance is an approach that utilises the condition monitoring data to predict the future machine conditions and makes decisions upon this prediction. The main aim of the present research is to achieve an improvement in predictive condition-based maintenance decision making through a cloud-based approach with usage of wide information content. For the improvement, it is crucial to identify and track not only condition related data but also context data. Context data allows better utilisation of condition monitoring data as well as analysis based on a machine population. The objective of this paper is to outline the first steps of a framework and methodology to handle and process maintenance, production, and factory related data from the first lifecycle phase to the operation and maintenance phase. Initial case study aims to validate the work in the context of real industrial applications.

  • 22.
    Sundaram, Maheswaran Vattur
    et al.
    Chalmers Univ Technol, Dept Ind & Mat Sci, SE-41296 Gothenburg, Sweden..
    Khodaee, Alireza
    KTH, Skolan för industriell teknik och management (ITM), Industriell produktion.
    Andersson, Michael
    Hoganas AB, SE-26383 Hoganas, Sweden..
    Nyborg, Lars
    Chalmers Univ Technol, Dept Ind & Mat Sci, SE-41296 Gothenburg, Sweden..
    Melander, Arne
    KTH, Skolan för industriell teknik och management (ITM), Industriell produktion. Swerea KIMAB, SE-16407 Stockholm, Sweden..
    Experimental and finite element simulation study of capsule-free hot isostatic pressing of sintered gears2018Ingår i: The International Journal of Advanced Manufacturing Technology, ISSN 0268-3768, E-ISSN 1433-3015, Vol. 99, nr 5-8, s. 1725-1733Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    A novel approach to reach full density in powder metallurgy (PM) components is demonstrated in this work. Water-atomised Mo-prealloyed steel powder is utilised for manufacturing cylindrical and gear samples through double pressing and double sintering (DPDS) process route. The effect of sample geometry and powder size fraction on densification is investigated and it is found that the DPDS route enables a density level of >95% which is sufficient to eliminate the surface open pores. Reaching such high density is necessary, in order to perform capsule-free hot isostatic pressing (HIP). After HIP, full densification is achieved for the cylindrical samples and only near full density is realised for the gears resulting in neutral zone formation due to the density gradient. In order to predict the densification behaviour during the compaction, FEM simulations considering the gear geometry are performed for both the pressing stages and HIP. The simulation predicted a similar densification behaviour with the formation of the neutral zone. The proposed DPDS route with capsule-free HIP in combination with FEM simulation is demonstrated as a potential route for manufacturing full-density PM steel components, e.g. gears, suitable for high-performance applications.

  • 23.
    Wang, Lihui
    KTH, Skolan för industriell teknik och management (ITM), Industriell produktion. Harbin University of Science and Technology, Harbin, China.
    Collaborative robot monitoring and control for enhanced sustainability2015Ingår i: The International Journal of Advanced Manufacturing Technology, ISSN 0268-3768, E-ISSN 1433-3015, Vol. 81, nr 9-12, s. 1433-1445Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    This paper presents a new approach for real-time collaborations in adaptive manufacturing, including web-based remote monitoring and control of an industrial robot, and active collision avoidance for human-robot collaborations. It is enabled by using virtual 3D models driven by real sensor data and depth images of human operators. The objectives of this research are to significantly reduce network traffic needed for real-time monitoring over the Internet and to increase human safety in a human-robot coexisting environment. The ultimate goal is to enhance the sustainability of manufacturing operations in decentralised dynamic environments with safety protection. The results of a case study show that the approach consumes less than 1 % of network bandwidth of traditional camera-based methods and is feasible and practical as a web-based solution.

  • 24. Wang, Lihui
    et al.
    Keshavarzmanesh, Shadi
    Feng, Hsi-Yung
    Buchal, Ralph O.
    Assembly process planning and its future in collaborative manufacturing: a review2009Ingår i: The International Journal of Advanced Manufacturing Technology, ISSN 0268-3768, E-ISSN 1433-3015, Vol. 41, nr 1-2, s. 132-144Artikel i tidskrift (Refereegranskat)
  • 25.
    Wang, Lihui
    et al.
    KTH, Skolan för industriell teknik och management (ITM), Industriell produktion. Harbin Univ Sci & Technol, Sch Mech & Power Engn, Harbin 150080, Heilongjiang, Peoples R China.
    Meng, Yue
    Ji, Wei
    KTH, Skolan för industriell teknik och management (ITM), Industriell produktion. Harbin Univ Sci & Technol, Sch Mech & Power Engn, Harbin 150080, Heilongjiang, Peoples R China.
    Cutting energy consumption modelling for prismatic machining features2019Ingår i: The International Journal of Advanced Manufacturing Technology, ISSN 0268-3768, E-ISSN 1433-3015, Vol. 103, nr 5-8, s. 1657-1667Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Targeting energy-efficient machining process planning, this paper presents a follow-up research on cutting energy consumption modelling for prismatic machining features (PMFs). Based on the investigation of plastic deformation-based energy consumption, its energy consumption model is extended to PMFs by refining machining time and feed at corners. Material removal volume associated with machining strategies for the PMF machining is considered as well. Moreover, cutting energy consumption models are established for the selected PMFs, i.e. face, step, slot and pocket. Finally, energy consumptions in machining of a designed test part, involving the established models of cutting energy consumption for the selected PMFs, are measured and compared with estimated energy consumptions to validate the developed models.

  • 26.
    Wang, Lihui
    et al.
    KTH, Skolan för industriell teknik och management (ITM), Industriell produktion.
    Schmidt, Bernard
    Givehchi, Mohammad
    KTH, Skolan för industriell teknik och management (ITM), Industriell produktion.
    Adamson, Göran
    Robotic assembly planning and control with enhanced adaptability through function blocks2015Ingår i: The International Journal of Advanced Manufacturing Technology, ISSN 0268-3768, E-ISSN 1433-3015, Vol. 77, nr 1-4, s. 705-715Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Manufacturing companies today need to maintain a high level of flexibility and adaptability to deal with uncertainties on dynamic shop floors, including, e.g. cutting tool shortage, part supply interruption, urgent job insertion or delay and machine unavailability. Such uncertainties are characteristic in component assembly operations. Addressing the problem, we propose a new method using function blocks to achieve much improved adaptability in assembly planning and robot control. In this paper, we propose to use event-driven function blocks for robotic assembly, aiming to plan trajectory and execute assembly tasks in real time. It is envisioned that this approach will achieve better adaptability if applied to real-world applications.

  • 27.
    Werke, Mats
    et al.
    KTH, Skolan för industriell teknik och management (ITM), Industriell produktion.
    Bagge, Mats
    KTH, Skolan för industriell teknik och management (ITM), Industriell produktion.
    Nicolescu, Mihai
    KTH, Skolan för industriell teknik och management (ITM), Industriell produktion.
    Lindberg, Bengt
    KTH, Skolan för industriell teknik och management (ITM), Industriell produktion.
    Process modelling using upstream analysis of manufacturing sequences2015Ingår i: The International Journal of Advanced Manufacturing Technology, ISSN 0268-3768, E-ISSN 1433-3015, Vol. 81, nr 9-12, s. 1999-2016Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    The manufacturing of components requires several manufacturing process steps that are performed in a sequence, during which the raw material is progressively converted into finished parts. The aim with simulation of manufacturing sequences is to replicate the aggregate effects of the process steps on key features of the finished product and manufacturing features. With the support of a successful simulation methodology, it will thereby be possible for process planners to evaluate virtually and select process steps to be included in the manufacturing sequence and to optimize process parameters. The motivation to implement sequential simulation in industry is therefore strong and will reduce time and cost in process planning. The modelling and simulation of complete manufacturing sequences is, however, a challenge which may lead to unrealistic and time-consuming modelling efforts and extensive computational requirements. This is due to the often complex material transformations through several consecutive process steps. In order to adapt sequential simulation into an industrial environment, simplifications are therefore necessary. This paper proposes a method for simplified metamodelling of manufacturing sequences, using upstream selection of process steps and definition of interconnected models. The method is presented as an algorithm and will improve the efficiency in the modelling of manufacturing sequences. The usability of the algorithm is demonstrated with two industrial cases: a bevel gear pinion and a steering arm.

  • 28.
    Yacob, Filmon
    et al.
    KTH, Skolan för industriell teknik och management (ITM), Industriell produktion.
    Semere, Daniel
    KTH, Skolan för industriell teknik och management (ITM), Industriell produktion.
    Nordgren, Erik
    LEAX AB Falun.
    Anomaly detection in Skin Model Shapes using machine learning classifiers2019Ingår i: The International Journal of Advanced Manufacturing Technology, ISSN 0268-3768, E-ISSN 1433-3015Artikel i tidskrift (Refereegranskat)
  • 29. Yang, Shucai
    et al.
    Liu, Weiwei
    Ji, Wei
    KTH, Skolan för industriell teknik och management (ITM), Industriell produktion. Harbin University of Science and Technology, China.
    Liu, Xianli
    Zhu, Jie
    A novel method of experimental evaluation on BTA tool geometries2017Ingår i: The International Journal of Advanced Manufacturing Technology, ISSN 0268-3768, E-ISSN 1433-3015, Vol. 91, nr 9-12, s. 4253-4261Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Towards the problem of closed space of Boring and Trepanning Association (BTA) drill, this paper presents a novel experimental method to evaluate BTA tool geometries, and a turning-based test is conducted to simulate drilling. The three inserts of BTA drill are replaced by the three turning inserts, the rotation of BTA drill is transformed by workpiece rotation in turning, the feed of BTA drill changes into the feed of turning inserts, and the cutting area per BTA insert is simulated by the cutting depth in turning. To implement the approach, three angles, consisting of edge inclination, flank angle and edge declination, are organised by a three-factor and three-level Taguchi experiment for each BTA insert, e.g. outside insert, centre insert and middle insert. Cutting force, chip patterns and chip curl radius are observed and measured to evaluate the insert geometries.

  • 30. Yin, S.
    et al.
    Ji, Wei
    KTH, Skolan för industriell teknik och management (ITM), Industriell produktion.
    He, G.
    Liu, X.
    Wang, Lihui
    KTH, Skolan för industriell teknik och management (ITM), Industriell produktion.
    Experimental evaluation on texture of flank face on tool wear in chamfer milling of stainless steel2018Ingår i: The International Journal of Advanced Manufacturing Technology, ISSN 0268-3768, E-ISSN 1433-3015, Vol. 99, nr 9-12, s. 2929-2937Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    This paper presents a novel grinding enabled texture, ‘V’ shaped texture (VST), on flank face. To implement the texture on a cutting performance, a set of chamfering experiments of stainless steel materials used as 3C product shell usually are presented. Cutting forces, surface qualities, and tool wear are measured and compared, of which results show that both smallest surface roughness and longest tool life are achieved by using a 30° VST chamfer tool. By comparing the results, a clear conclusion can be drawn that texture types and angles are not independent factors to cutting performance; therefore, a suitable combination of texture types and texture angles can provide a significant improvement of tool life and surface quality.

  • 31.
    Yuan, Qilong
    et al.
    Foshan Univ, Sch Electromech Engn, Foshan, Peoples R China..
    Chen, I-Ming
    Nanyang Technol Univ, Sch Mech & Aerosp Engn, Singapore, Singapore..
    Lembono, Teguh Santoso
    Singapore Univ Technol & Design, Engn Prod Dev, Singapore, Singapore..
    Nelson Landén, Simon
    KTH, Skolan för industriell teknik och management (ITM).
    Malmgren, Victor
    KTH, Skolan för industriell teknik och management (ITM).
    Automatic robot taping system with compliant force control2018Ingår i: The International Journal of Advanced Manufacturing Technology, ISSN 0268-3768, E-ISSN 1433-3015, Vol. 94, nr 9-12, s. 4105-4113Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    In surface treatment processes like plasma spraying and spray painting of workpieces, protecting the uninvolved surface by applying masking tape is a common process. Due to the operation complexity for different geometries, such taping tasks depend on a lot of manual works, which is tedious and tiring. This paper introduces an automatic agile robotic system and the corresponding algorithm to do the surface taping. The automatic taping system consists of a 3D scanner for workpiece 3D model reconstruction, a taping end-effector which is mounted on a robot manipulator to handle the taping task, and a rotating platform that is used to hold the workpiece. The surface covering method and the taping path planning algorithms using the scanned model are introduced. With the implementation of the compliance mechanism, the force feedback and the tape-cutting mechanism, the system is able to tape flat, cylindrical, freeform, and grooved surfaces. Experiments conducted on taping an engine inner liner shows that the surface can be covered with uniform taping overlap and very little wrinkle. The proposed system is a useful taping package for industrial applications such as workpiece repairing and surface protection, where surface treatments are involved.

  • 32. Zhang, W.
    et al.
    Zhang, Shi-Li
    KTH, Skolan för informations- och kommunikationsteknik (ICT), Integrerade komponenter och kretsar.
    Huang, X.
    Wang, C.
    3D treatment planning and simulating for craniofacial skeleton2005Ingår i: The International Journal of Advanced Manufacturing Technology, ISSN 0268-3768, E-ISSN 1433-3015, Vol. 26, nr 10-sep, s. 1043-1047Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    In surgery of the craniofacial skeleton, the current simulation planning systems extrapolate 3D surgical movements and outcomes based on 2D radiographs, which are inadequate for complex surgical movements. This paper presents a 3D treatment-planning system based on computerized tomography (CT) data. Based upon MedGraphics software, a 3D data field is constructed out of the sectional image stack through linear interpolation, and a seeded region-growing algorithm is adopted for the objective tissue segmentation. With the marching cubes algorithm, the triangular mesh model and 3D geometric model of diseased facial skeleton are reconstructed. Then the model is cut, the segments are moved or rotated to their predicted positions, and angles and distances are measured. After the triangular mesh model is decimated, an RP model is manufactured for surgical simulation and a prosthesis is designed. The system has been clinically used for more than 50 cases and technically validated with success.

  • 33.
    Zhang, Yongping
    et al.
    Beihang Univ, Sch Automat Sci & Elect Engn, Beijing 100191, Peoples R China..
    Cheng, Ying
    Beihang Univ, Sch Automat Sci & Elect Engn, Beijing 100191, Peoples R China..
    Wang, Xi Vincent
    KTH, Skolan för industriell teknik och management (ITM).
    Zhong, Ray Y.
    Univ Hong Kong, Dept Ind & Mfg Syst Engn, Hong Kong, Peoples R China..
    Zhang, Yingfeng
    Northwestern Polytech Univ, Key Lab Contemporary Design & Integrated Mfg Tech, Minist Educ, Xian 710072, Shaanxi, Peoples R China..
    Tao, Fei
    Beihang Univ, Sch Automat Sci & Elect Engn, Beijing 100191, Peoples R China..
    Data-driven smart production line and its common factors2019Ingår i: The International Journal of Advanced Manufacturing Technology, ISSN 0268-3768, E-ISSN 1433-3015, Vol. 103, nr 1-4, s. 1211-1223Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Due to the wide usage of digital devices and easy access to the edge items in manufacturing industry, massive industrial data is generated and collected. A data-driven smart production line (SPL), which is a basic cell in a smart factory, is derived primarily. This paper studies the data-driven SPL and its common factors. Firstly, common factors such as integration, data-driven, service collaboration, and proactive service of SPL are investigated. Then, a data-driven method including data self-perception, data understanding, decision-making, and precise control for implementing SPL is proposed. As a reference, the research of the common factors and the data-driven method could offer a systematic standard for both academia and industry. Moreover, in order to validate this method, this paper presents an industrial case by taking an energy consumption forecast and fault diagnosis based on energy consumption data in a prototype of LED epoxy molding compound (EMC) production lines for example.

  • 34. Zhou, Zude
    et al.
    Yao, Bitao
    Xu, Wenjun
    Wang, Lihui
    KTH, Skolan för industriell teknik och management (ITM), Industriell produktion, Produktionssystem.
    Condition monitoring towards energy-efficient manufacturing: a review2017Ingår i: The International Journal of Advanced Manufacturing Technology, ISSN 0268-3768, E-ISSN 1433-3015, Vol. 91, nr 9-12, s. 3395-3415Artikel, forskningsöversikt (Refereegranskat)
    Abstract [en]

    Recently, sustainable development has obtained increasing attentions from governments, industry, and academia owing to the limited natural resources. In the area of energy consumption, manufacturing accounts for a major portion of the total energy usage in industry. There is a clear necessity for energy-efficient manufacturing by optimizing manufacturing activities. Condition monitoring is the technology that provides runtime information for optimization. This paper aims to provide a better understanding of past achievements and future trends of condition monitoring towards energy-efficient manufacturing. Since there are a variety of sensors and technologies that can be used for condition monitoring towards energy-efficient manufacturing, this paper divides manufacturing activities into three levels, namely unit process level, shop-floor level, and supply chain level, and summarizes and discusses the sensors and technologies required to enable energy-efficient manufacturing on each level. With the advancement of technology, condition monitoring shows the characteristic of intelligence. Intelligent sensors that can be applied to condition monitoring in energy-efficient manufacturing are also reviewed. This paper can be helpful to manufacturers who are willing to improve energy efficiency in own manufacturing practice.

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