Analytical and Experimental Study on Bonded-in FRP Bars in Glulam Timber

Lorenzis, Laura De; Scialpi, Vincenza; Tegola, Antonio La

doi:10.1533/9781845690649.3.308

Cited by 1 publication

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“…This can occur in large-scale in a wood member when trees that have grown spirally or with a pronounced taper are cut for lumber. Cross-graining drastically reduces the tensile strength of wood, typically leading to abrupt and early bending failures [22][23][24]. Three patch lengths (L P ) were tested under 4 PB.…”

Section: Introductionmentioning

confidence: 99%

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

Campilho

Moura

Barreto

et al. 2010

Construction and Building Materials

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Keywords:Wood Composite Repair Cohesive zone models Finite element analysis a b s t r a c t 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.

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Section: Introductionmentioning

confidence: 99%