Influence of growth parameters on mountain pine wood properties

Autor: Agnès Burgers, Patrick Langbour, Cedric Montero, Marc Vinches, Remy Marchal, Bernard Thibaut
Přispěvatelé: Laboratoire de Mécanique et Génie Civil (LMGC), Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Génie de l'Environnement Industriel (LGEI), IMT - MINES ALES (IMT - MINES ALES), Institut Mines-Télécom [Paris] (IMT)-Institut Mines-Télécom [Paris] (IMT), Bois (BOIS), Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS), BioWooEB (UPR BioWooEB), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad), ANR-10-LABX-0020,NUMEV,Digital and Hardware Solutions and Modeling for the Environement and Life Sciences(2010)
Předmět:
Zdroj: HAL
EUROMECH Colloquium 556
EUROMECH Colloquium 556, May 2015, Dresden, Germany
Popis: International audience; Mountain pine (Pinus uncinata Ramon ex DC) is an important forest species in the Pyrenean Mountain, both in France and Spain [1]. In a project dealing with its use as timber [2], physical and mechanical tests were performed on clear wood specimen.Wood properties are determined both by genetics (species and provenance) and by growth adaptation to the tree's environnement through variations in ring width (RW), basic density (BD), microfibril angle (MFA) and chemical composition of the cell wall matrix. The square of sound speed called here specific modulus (SM) is a good proxy for MFA [3] and fibre saturation point (FSP) can be a proxy of chemical composition of the cell wall.Shrinkage parameters: total radial (RS), tangential (TS), volumetric (VS) as well as shrinkage anisotropy (SA=TS/RS) are important physical properties for timber use. Longitudinal modulus of elasticity (MOE), resistance to compression (CS) and deformability (strain limit before damage beginning in compression) are key mechanical properties both for tree mechanics and timber technology.All these properties are known to vary, even in a given species, often up to two or threefold, mostly due to adaptation to growth condition, and this is a drawback for timber use. This presentation will focus on the links between variations of growth parameters and wood properties with the objective to build regression models of properties.
Databáze: OpenAIRE
Externí odkaz: