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Application of bridging-law concepts to short-fibre composites Part 3: Bridging law derivation from experimental crack profiles
2000 (English)In: Composites Science And Technology, ISSN 0266-3538, Vol. 60, no 16, 2883-2894 p.Article in journal (Refereed) Published
Abstract [en]

This is the third paper in a series of four where notch sensitivity, fracture energy and bridging laws are studied in short-fibre polymer composites. Here, bridging laws are derived from experimental crack-opening profiles in centre-hole notched tensile specimens. The materials studied are three types of commercial glass-mat composites with different reinforcement structures and matrices. The materials have softening bridging laws and the calculated fracture energies from bridging laws are in good agreement with values determined directly by experiment. The calculated maximum local bridging stress is found to be higher than the uniaxial tensile strength. An outline of a failure criterion for notched specimens based on the crack-bridging approach is presented.

Place, publisher, year, edition, pages
2000. Vol. 60, no 16, 2883-2894 p.
Keyword [en]
polymer-matrix composites (PMCs), short-fibre composites, notch, fibre bridging, failure criterion, brittle-matrix composites, notch-sensitivity, reinforced ceramics, tensile properties, fiber composites, mechanics, growth
URN: urn:nbn:se:kth:diva-20201ISI: 000165722500001OAI: diva2:338894
QC 20100525Available from: 2010-08-10 Created: 2010-08-10Bibliographically approved

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Gamstedt, E. KristoferBerglund, Lars A.
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