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Study on the Possibility of Increasing the Maximum Allowable Stresses in Fibre-Reinforced Plastics
Chalmers University of Technology, Sweden.
Chalmers University of Technology, Sweden.
RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, SP – Sveriges Tekniska Forskningsinstitut / Hållfasthet (BMh).ORCID iD: 0000-0001-7182-0872
2013 (English)In: Journal of Composite Materials, Vol. 47, no 16, p. 1931-1941Article in journal (Refereed) Published
Abstract [en]

This article presents the results of a study aimed at investigating the possibility of increasing the maximum allowable stresses in fibre-reinforced plastics compared to current practice. The study consisted of a comparison between the maximum allowable stresses of a group of cross-ply laminates, determined by deterministic analyses with safety and model factors as stated in design rules, and their probabilistic responses estimated with a fracture mechanics based model that accounted for material degradation. The results suggest that for the studied cases, the maximum allowable stresses do not provide the desired reliability; thus, their increase cannot be motivated. More importantly, the investigation shows that a better understanding of the effects of matrix cracks, and therefore, the maximum allowable crack density in a composite laminate, would lead to better and safer composite structures.

Place, publisher, year, edition, pages
2013. Vol. 47, no 16, p. 1931-1941
Keywords [en]
cross-ply laminates, matrix cracking, probability of failure, safety
National Category
Natural Sciences
Identifiers
URN: urn:nbn:se:ri:diva-6483DOI: 10.1177/0021998312452763Scopus ID: 2-s2.0-84879584116Local ID: 15560OAI: oai:DiVA.org:ri-6483DiVA, id: diva2:964321
Available from: 2016-09-08 Created: 2016-09-08 Last updated: 2020-12-01Bibliographically approved

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Johnson, Erland

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