Thermal Strain of Green Hinoki Wood: Separating the Hygrothermal Recovery and the Reversible Deformation

Sandrine Bardet (1) , Joseph Gril (1) , Keisuke Kojiro (2)

1 MAB - Mécanique de l'Arbre et du Bois
2 Laboratory of Wood Technology

Heating of green wood involves a complex set of deformation processes, including reversible thermal strain, reversible shrinkage due to decrease of moisture content, and irreversible viscoelatic recovery of growth stress activated by temperature called hygrothermal recovery (HTR). Experimental tests were performed on small Japanese Cypress specimens oriented in the three principal R, T, L directions, using a Thermo Mechanical Analyser. The analysis allowed the separation of the hygrothermal recovery from the reversible components of the deformation.

Domaines: Mécanique des matériaux [physics.class-ph]; Mécanique des matériaux [physics.class-ph]

Sandrine Bardet, Joseph Gril, Keisuke Kojiro. Thermal Strain of Green Hinoki Wood: Separating the Hygrothermal Recovery and the Reversible Deformation. Models and Methods in Civil Engineering, Lecture Notes in Applied and Computational Mechanics, Springer verlag, pp.6, 2012. ⟨hal-00789662⟩