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Evaluation of interfacial shear strength by tensile tests of impregnated flax fiber yarns
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Material Science.ORCID iD: 0000-0002-5210-4341
Institute of Polymer Mechanics, University of Latvia.
2012 (English)In: Journal of composite materials, ISSN 0021-9983, E-ISSN 1530-793X, Vol. 46, no 3, p. 351-357Article in journal (Refereed) Published
Abstract [en]

Adhesion of flax fibers and polymer matrix as well as mutual bonding of elementary fibers in a technical fiber are among the principal factors governing the mechanical response of flax fiber reinforced polymer-matrix composites. A method for evaluation of adhesion is proposed based on tension tests of impregnated fiber yarns, with subsequent characterization by optical microscopy of length distribution of fibers pulled out of the yarn fracture surfaces. An elementary probabilistic model is derived relating aspect ratio distribution of the pulled out fibers to the fiber tensile strength distribution and the effective interfacial shear strength. The method was applied to flax fiber/vinylester resin yarns and an estimate of interfacial shear strength at 17 MPa was obtained.

Place, publisher, year, edition, pages
2012. Vol. 46, no 3, p. 351-357
National Category
Composite Science and Engineering
Research subject
Polymeric Composite Materials
Identifiers
URN: urn:nbn:se:ltu:diva-15419DOI: 10.1177/0021998311410505ISI: 000299611600008Scopus ID: 2-s2.0-84856454583Local ID: eecdb2d1-ba80-4917-915d-dbb487c349e1OAI: oai:DiVA.org:ltu-15419DiVA, id: diva2:988393
Note
Validerad; 2012; 20110830 (joffe)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2018-07-10Bibliographically approved

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Joffe, RobertsSparnins, Edgars

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