BONDING PERFORMANCE OF TROPICAL MULTI SPECIES GLUED SOLID TIMBER
Résumé
This paper investigates cracking in mode I of tropical multi species glued solid timbers. The objective is to assess the influence of the resistance of glue joints on such assemblies. Specimens are tested in Double Cantilever Bending (DCB), and a crack is initiated on the glue joint to facilitate the delamination under a quasi-static loading. The objective is to determine the stress intensity factor and the energy release rate, but also to study the propagation of the crack according to the load using a full field measurement technique. Three tropical species with different density, are chosen and glued by pair in order to lower the cost of the Glued Solid Timber (GST) beams. The adhesive used is a Phenol Resorcinol Formaldehyde (PRF) associated with a hardener HRP-155.
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