Numerical study of the influence of veneer lathe checks on the elastic mechanical properties of laminated veneer lumber (LVL) made of beech
TypeArticles dans des revues avec comité de lecture
Laminated veneer lumber (LVL) is a well-known high-performance engineered wood product suitable for structural applications. However, the peeling process can induce lathe checks of the veneer with various depth and spatial frequencies. In this study, a finite element model (FEM) is proposed to describe and to analyze the influence of veneer lathe checks on the elastic properties of LVL. Firstly, the typical lathe check depths and frequencies were determined by means of different compression rates of the pressure bar when peeling. These experimental results served as input to the model to compare the influence of check depth and frequency on the elastic behavior of an LVL beam in four-point bending. The checks were modeled as free spaces in the cross-section that can be partially filled with glue. The results show that the longitudinal modulus of elasticity is marginally affected by checking, while the shear rigidity of the LVL beam is significantly reduced in edgewise bending if checks are not glued. Gluing checks, even under consideration of a low Young’s modulus of glue, highly reduces the effect of checking on the elastic mechanical properties of LVL.
Fichier(s) constituant cette publication
Cette publication figure dans le(s) laboratoire(s) suivant(s)
Visualiser des documents liés par titre, auteur, créateur et sujet.
POT, Guillaume; DENAUD, Louis; COLLET, Robert; GIRARDON, Stéphane; COTTIN, Fabrice (FPInnovations, 2015)Laminated veneer lumber (LVL) is a high-performance engineered wood product made of several wood veneers bound together mostly in grain direction. Veneers are obtained thanks to peeling process. This cutting process induces ...
PFEIFFER, Renaud; MAIGRE, Hubert; COLLET, Robert; DENAUD, Louis; POT, Guillaume (FPInnovations, 2015)During the primary transformation in wood industry, logs are faced with conical rough milling cutters commonly named slabber or canter heads. Chips produced consist of raw materials for pulp paper and particleboard industries. ...
PFEIFFER, Renaud; COLLET, Robert; DENAUD, Louis; FROMENTIN, Guillaume; LORONG, Philippe (2013)During the primary transformation of wood, logs are faced with slabber heads. Chips produced are raw materials for pulp paper and particleboard industries. Efficiency of these industries is partly due to particle size ...
PFEIFFER, Renaud; COLLET, Robert; DENAUD, Louis; FROMENTIN, Guillaume (Springer Verlag, 2014)During the primary transformation in wood industry, logs are faced with conical rough milling cutters commonly named slabber or canter heads. Chips produced consist of raw materials for pulp paper and particleboard industries. ...
Automatic measurement of wood fiber orientation and knot detection using an optical system based on heating conduction DAVAL, Vincent; POT, Guillaume; BELKACEMI, Mohamed; MERIAUDEAU, Fabrice; COLLET, Robert (OSA Publishing, 2015)In this paper, a new approach to computing the deviation of wood grain is proposed. To do this, the thermal conduction properties of timber are used (higher conduction in the fiber direction). Exciting the surface of the ...