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Effects of fiber and interphase on matrix-initiated transverse failure in polymer composites
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Material Science.ORCID iD: 0000-0003-0630-2037
Luleå tekniska universitet.
Luleå University of Technology, Department of Engineering Sciences and Mathematics.ORCID iD: 0000-0003-1871-4020
1996 (English)In: Composites Science And Technology, ISSN 0266-3538, E-ISSN 1879-1050, Vol. 45, no 6, p. 657-665Article in journal (Refereed) Published
Abstract [en]

Failure initiation in polymer-matrix composites loaded transverse to the fibers is investigated by a numerical parametric study where the effects of constituent properties, interphase properties and thickness are examined. Failure initiation in the matrix only is studied, interfacial debonding not being considered. Two modes of failure - yielding and cavitation-induced brittle failure - are examined. A criterion for the cavitation-induced brittle failure has been proposed previously and failure prediction based on this criterion was found to agree with experimental data for a glass-fiber-reinforced epoxy. The present study shows that the elastic modulus of fibers has a large effect on the stress and strain to failure initiation. A rubbery interphase material is found in most cases to have a beneficial effect. The site at which failure initiates and the governing mode of failure initiation are also affected by the fiber modulus and the interphase properties

Place, publisher, year, edition, pages
1996. Vol. 45, no 6, p. 657-665
National Category
Composite Science and Engineering
Research subject
Polymeric Composite Materials
Identifiers
URN: urn:nbn:se:ltu:diva-8161DOI: 10.1016/0266-3538(96)00047-4ISI: A1996VB64300005Scopus ID: 2-s2.0-0030153212Local ID: 6a0f6980-bb59-11db-b560-000ea68e967bOAI: oai:DiVA.org:ltu-8161DiVA, id: diva2:981052
Note
Godkänd; 1996; 20070212 (cira)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2018-07-10Bibliographically approved

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Asp, LeifTalreja, Ramesh

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