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Effect of boundary conditions on microdamage initiation in thin ply composite laminates
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Material Science. Université de Lorraine, Nancy, France.ORCID iD: 0000-0002-9261-301X
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Material Science.ORCID iD: 0000-0001-9649-8621
Université de Lorraine, Nancy, France.
2018 (English)Conference paper, Published paper (Refereed)
Abstract [en]

The Energy Release Rate (ERR) and the contact zone size for a fiber/matrix interface debond are studied for a thin-ply glass fiber/epoxy laminate. The main objective is to analyze the effect on the debonding process of the presence of a traction-free specimen surface or an adjacent material, in the form of a stiffer UD ply or by considering it as part of a thick 90° layer, at different levels of fiber content. To this end, a model of Representative Volume Element (RVE) subjected to different combinations of boundary conditions is proposed. It is found that the constraining effect of the adjacent ply favors at high fiber volume fractions the opening of small debonds (10 − 40°) for the same level of strain. The results agree well and provide a mechanical explanation to previous microscopic observations available in the literature [4].

Place, publisher, year, edition, pages
2018.
Keywords [en]
Polymer-matrix Composites (PMCs), Thin-ply, Transverse Failure, Debonding, Finite Element Analysis (FEA)
National Category
Composite Science and Engineering
Research subject
Polymeric Composite Materials
Identifiers
URN: urn:nbn:se:ltu:diva-71656OAI: oai:DiVA.org:ltu-71656DiVA, id: diva2:1264160
Conference
ECCM18 - 18 th European Conference on Composite Materials, Athens, Greece, 24-28 th June 2018
Available from: 2018-11-19 Created: 2018-11-19 Last updated: 2019-01-21Bibliographically approved

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Di Stasio, LucaVarna, Janis

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CiteExportLink to record
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  • apa
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