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An improved analysis of the stresses in a single-fibre fragmentation test: I. Two-phase model
Katholieke Universiteit Leuven.
Katholieke Universiteit Leuven.
Katholieke Universiteit Leuven.
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Material Science.ORCID iD: 0000-0001-9649-8621
1997 (English)In: Composites Science And Technology, ISSN 0266-3538, E-ISSN 1879-1050, Vol. 57, no 7, p. 809-819Article in journal (Refereed) Published
Abstract [en]

In order to improve the analysis of the single-fibre fragmentation test, a modified variational analysis, based on the principle of minimum complementary energy, has been derived to describe the stress states around breaks in a single fibre embedded in an infinite matrix. The variational analysis includes the non-uniform stress distribution in the radial direction of the matrix cylinder, and allows for crack interaction. The stress profiles along the interface between the fibre and matrix are presented and compared with the prediction by the variational approach presented by Nairn. The predictions are also compared with the results from finite element analysis and good agreement is obtained. While the present analysis is more accurate than existing analytical models, it leads to very simple final expressions. Thus, it is convenient to be used for data reduction of the single-fibre fragmentation test results. In particular, it can be easily generalized to a three-phase model, including an interphase between fibre and matrix. The extensive applications of this model are also presented.

Place, publisher, year, edition, pages
1997. Vol. 57, no 7, p. 809-819
National Category
Composite Science and Engineering
Research subject
Polymeric Composite Materials
Identifiers
URN: urn:nbn:se:ltu:diva-9783DOI: 10.1016/S0266-3538(97)00050-XISI: A1997XN34100009Local ID: 876b4310-103f-11dc-b9dd-000ea68e967bOAI: oai:DiVA.org:ltu-9783DiVA, id: diva2:982721
Note
Godkänd; 1997; 20070601 (cira)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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