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Failure analysis of laminated timber beams reinforced with glass fibre composites
KTH, School of Engineering Sciences (SCI), Aeronautical and Vehicle Engineering, Lightweight Structures.ORCID iD: 0000-0002-9207-3404
KTH, School of Engineering Sciences (SCI), Aeronautical and Vehicle Engineering, Lightweight Structures.
1997 (English)In: Wood Science and Technology, ISSN 0043-7719, E-ISSN 1432-5225, Vol. 31, 17-34 p.Article in journal (Refereed) Published
Abstract [en]

A qualitative analysis is presented of failure, perpendicular to the grain, in laminated timber reinforced with a glass fibre composite. The study is focused on beams with holes of different shape. The stresses by corners, infinitesimal cracks and finite cracks are investigated. An initial crack model is suggested that brings about some of the phenomena observed in earlier performed experiments. A crack appears to propagate in the wood but is retarded in the reinforced beams. Eventually, the composite will fracture and failure of the beam follows. Finite element computations suggest that the reinforcement decreases the stress intensity at cracks in the wood and acts as a crack stopper. The reinforcing effect increases with the crack length. A point-stress criterion is used to predict failure in the fibre composite.

Place, publisher, year, edition, pages
1997. Vol. 31, 17-34 p.
National Category
Composite Science and Engineering Building Technologies
Identifiers
URN: urn:nbn:se:kth:diva-83055OAI: oai:DiVA.org:kth-83055DiVA: diva2:498650
Note

NR 20140805

Available from: 2012-02-12 Created: 2012-02-12 Last updated: 2017-12-07Bibliographically approved

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Hallström, Stefan

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