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Environmental performance of self-reinforced composites in automotive applications - Case study on a heavy truck component
KTH, School of Architecture and the Built Environment (ABE), Sustainable development, Environmental science and Engineering.
KTH, School of Engineering Sciences (SCI), Aeronautical and Vehicle Engineering.
KTH, School of Architecture and the Built Environment (ABE), Sustainable development, Environmental science and Engineering.
KTH, School of Engineering Sciences (SCI), Aeronautical and Vehicle Engineering.
2016 (English)In: Materials & design, ISSN 0264-1275, E-ISSN 1873-4197, Vol. 103, 321-329 p.Article in journal (Refereed) PublishedText
Abstract [en]

A screening environmental life cycle analysis (LCA) of the novel self-reinforced poly(ethylene therephthalate) (SrPET) is presented in this paper. A truck exterior panel is used as case study where a concept design made by SrPET is assessed and compared to a glass fibre reinforced composite and a thermoplastic blend that are currently used for the selected component. The results showed that the SrPET panel has 25% lower environmental impact compared to the current design, with no significant life cycle trade-offs. SrPET offers possibilities for weight reduction while maintaining good mechanical properties. As the impact during use phase is expected to decrease in the future the relative importance of manufacturing and end-of-life (EOL) will increase. Thus SrPET can be considered a competitive material for replacing existing energy intense non-recyclable composites.

Place, publisher, year, edition, pages
Elsevier, 2016. Vol. 103, 321-329 p.
Keyword [en]
Self-reinforced composites, Environmental impact, Automotive component, Life cycle assessment
National Category
Materials Engineering
Identifiers
URN: urn:nbn:se:kth:diva-189067DOI: 10.1016/j.matdes.2016.04.090ISI: 000376892300037ScopusID: 2-s2.0-84966335400OAI: oai:DiVA.org:kth-189067DiVA: diva2:943781
Note

QC 20160628

Available from: 2016-06-28 Created: 2016-06-27 Last updated: 2016-09-14Bibliographically approved
In thesis
1. Assessing design strategies for improved life cycle environmental performance of vehicles
Open this publication in new window or tab >>Assessing design strategies for improved life cycle environmental performance of vehicles
2016 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

Vehicle manufactures have adopted different strategies for improving the environmental performance of their fleet including lightweight design and alternative drivetrains such as EVs. Both strategies reduce energy during use but may result in a relative increase of the impact during other stages. To address this, a lifecycle approach is needed when vehicle design strategies are developed. The thesis explores the extent that such a lifecycle approach is adopted today and assesses the potential of these strategies to reduce the lifecycle impact of vehicles. Moreover it aims to contribute to method development for lifecycle considerations during product development and material selection.

Current practices were explored in an empirical study with four vehicle manufacturers. The availability of tools for identifying, monitoring and assessing design strategies was explored in a literature review. The results of the empirical study showed that environmental considerations during product development often lack a lifecycle perspective. Regarding the use of tools a limited number of such tools were utilized systematically by the studied companies despite the numerous tools available in literature.

The influence of new design strategies on the lifecycle environmental performance of vehicles was assessed in three case studies; two looking into lightweight design and one at EVs. Both strategies resulted in energy and GHG emissions savings though the impact during manufacturing increases due to the advanced materials used. Assumptions relating to the operating conditions of the vehicle e.g. lifetime distance or for EVs the carbon intensity of the energy mix, influence the level of this tradeoff. Despite its low share in terms of environmental impact EOL is important in the overall performance of vehicles.

The thesis contributed to method development by suggesting a systematic approach for material selection. The approach combines material and environmental analysis tools thus increases the possibilities for lifecycle improvements while minimizing risk for sub-optimizations.

Place, publisher, year, edition, pages
Stockholm: KTH Royal Institute of Technology, 2016. 60 p.
Series
TRITA-INFRA-FMS-PHD, 2016:04
Keyword
Vehicle design, Design strategies, Lightweight design, Electric vehicles, Design for Environment (DfE), DfE tools, Life cycle assessment (LCA), Simplified LCA, Composite materials
National Category
Environmental Sciences Environmental Management
Research subject
Planning and Decision Analysis
Identifiers
urn:nbn:se:kth:diva-192536 (URN)978-91-7729-108-4 (ISBN)
Public defence
2016-10-17, F3, Lindstedtsvägen 26, Stockholm, 13:00 (English)
Opponent
Supervisors
Note

QC 20160920

Available from: 2016-09-20 Created: 2016-09-14 Last updated: 2016-09-20Bibliographically approved

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Poulikidou, SofiaJerpdal, LarsBjörklund, AnnaAkermo, Malin
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