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Numerical analysis of debond propagation in the single fibre fragmentation test
Escuela Superior de Ingenieros, Universidad de Sevilla.
Escuela Superior de Ingenieros, Universidad de Sevilla.
Escuela Superior de Ingenieros, Universidad de Sevilla.
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Material Science.ORCID iD: 0000-0001-9649-8621
2009 (English)In: Composites Science And Technology, ISSN 0266-3538, E-ISSN 1879-1050, Vol. 69, no 15-16, p. 2514-2520Article in journal (Refereed) Published
Abstract [en]

A numerical analysis, using the Boundary Element Method, of the stress state within the specimen in the Single Fibre Fragmentation Test is presented first. Thermal residual stresses and fibre-matrix interfacial friction along the debonding crack faces have been considered in the study. Special attention has been paid to the axial stresses along the fibre and the interfacial tractions and relative displacements in the neighbourhood closest to the debonding crack tips. In order to analyze the debond propagation, the associated Energy Release Rate has been evaluated from the near-tip elastic solution. Numerical results show that both the effects of thermal residual stresses and of fibre-matrix interfacial friction are opposed to the debond propagation. Additionally, the effect of the debond propagation on the load transfer through the interface has been studied, showing that fibre-matrix interfacial friction has a weak influence on the distance needed to re-establish the nominal axial load within the fragment.

Place, publisher, year, edition, pages
2009. Vol. 69, no 15-16, p. 2514-2520
National Category
Composite Science and Engineering
Research subject
Polymeric Composite Materials
Identifiers
URN: urn:nbn:se:ltu:diva-15274DOI: 10.1016/j.compscitech.2009.07.006ISI: 000272019100002Scopus ID: 2-s2.0-70350072511Local ID: ec616c40-7b63-11de-8da0-000ea68e967bOAI: oai:DiVA.org:ltu-15274DiVA, id: diva2:988248
Note
Validerad; 2009; 20090728 (ysko)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2018-07-10Bibliographically approved

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Varna, Janis

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