Experimental and numerical evaluation of composite repairs on wood beams damaged by cross-graining

• Type: Article in International Scientific Journal
• Date: 2010

Authors

Campilho, RDSG (Author) Other; de Moura, MFSF (Author) FEUP; Barreto, AMJP (Author) Other; Morais, JJL (Author) Other; Domingues, JJMS (Author) Other

Journal

Title: Construction and Building Materials

Vol. 24 No. 4

Pages: 531-537

ISSN: 0950-0618

Publisher: Elsevier

Indexing

ISI Web of Knowledge - 33 Citations

ISI Web of Science

Scopus - 38 Citations

Scientific classification

FOS: Engineering and technology > Civil engineering

Other information

Authenticus ID: P-003-7Q5

DOI: 10.1016/j.conbuildmat.2009.10.006

Abstract (EN): An experimental and Finite Element study was performed on the bending behaviour of wood beams of the Pinus Pinaster species repaired with adhesively-bonded carbon-epoxy patches, after sustaining damage by cross-grain failure. This damage is characterized by crack growth at a small angle to the beams longitudinal axis, due to misalignment between the wood fibres and the beam axis. Cross-grain failure can occur in large-scale in a wood member when trees that have grown spirally or with a pronounced taper are cut for lumber. Three patch lengths were tested. The simulations include the possibility of cohesive fracture of the adhesive layer, failure within the wood beam in two propagation planes and patch interlaminar failure, by the use of cohesive zone modelling. The respective cohesive properties were estimated either by an inverse method or from the literature. The comparison with the tests allowed the validation of the proposed methodology, opening a good perspective for the reduction of costs in the design stages of these repairs due to extensive experimentation.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 7