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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 tekniska universitet, Institutionen för teknikvetenskap och matematik, Materialvetenskap.ORCID-id: 0000-0001-9649-8621
2009 (engelsk)Inngår i: Composites Science And Technology, ISSN 0266-3538, E-ISSN 1879-1050, Vol. 69, nr 15-16, s. 2514-2520Artikkel i tidsskrift (Fagfellevurdert) 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.

sted, utgiver, år, opplag, sider
2009. Vol. 69, nr 15-16, s. 2514-2520
HSV kategori
Forskningsprogram
Polymera konstruktionsmaterial
Identifikatorer
URN: urn:nbn:se:ltu:diva-15274DOI: 10.1016/j.compscitech.2009.07.006ISI: 000272019100002Scopus ID: 2-s2.0-70350072511Lokal ID: ec616c40-7b63-11de-8da0-000ea68e967bOAI: oai:DiVA.org:ltu-15274DiVA, id: diva2:988248
Merknad
Validerad; 2009; 20090728 (ysko)Tilgjengelig fra: 2016-09-29 Laget: 2016-09-29 Sist oppdatert: 2018-07-10bibliografisk kontrollert

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