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Inverse modeling applied for material characterization of powder materials
KTH, School of Engineering Sciences (SCI), Solid Mechanics (Dept.).
KTH, School of Engineering Sciences (SCI), Solid Mechanics (Dept.).ORCID iD: 0000-0001-6232-8819
2015 (English)In: Journal of Testing and Evaluation, ISSN 0090-3973, E-ISSN 1945-7553, Vol. 43, no 5, 1005-1019 p.Article in journal (Refereed) Published
Abstract [en]

An investigation is performed concerning the applicability of inverse procedures, using optimization and simple experiments, for characterization of WC/Co powder materials. The numerical procedure is combined with uniaxial die-compaction experiments using an instrumented die, which allows direct measurement of the distribution of radial stress during the experiments. Finite-element (FE) methods and an advanced constitutive description of powder materials are relied upon to model the compaction experiment. Optimization using a surrogate model is used to determine some of the parameters in the constitutive description. These parameters in the material model are said to be found (with some accuracy) if the output from the FE simulation is similar to the experimental data. It is found that even though a complete constitutive description of the powder materials investigated cannot be achieved using this approach, many important material parameters can be determined with good accuracy.

Place, publisher, year, edition, pages
2015. Vol. 43, no 5, 1005-1019 p.
Keyword [en]
Constitutive description, Inverse modeling, Material characterization, Optimization, Parameter sensitivity, Powder compaction, Compaction, Finite element method, Inverse problems, Tungsten carbide, Material characterizations, Parameter sensitivities, Powder compactions, Characterization
National Category
Materials Engineering
URN: urn:nbn:se:kth:diva-175633DOI: 10.1520/JTE20130266ScopusID: 2-s2.0-84941650655OAI: diva2:865265

QC 20151027

Available from: 2015-10-27 Created: 2015-10-19 Last updated: 2015-10-27Bibliographically approved

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Larsson, Per-Lennart
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Solid Mechanics (Dept.)
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