Experimental and Numerical Study of Cracking and Strains of Tropical Green Wood Slice Subjected to Natural Drying
Résumé
The natural drying and fracture of green wood slice of tropical species are investigated. The tests are carried out on slices (Aucoumea klaineana P. and Pterocarpus soyauxii) with an average diameter (24.5 cm ± 0.56) and thickness (3.7 cm ± 0.26) in uncontrolled temperature and relative humidity. Targets are then machined on the slice in the radial and circular direction in order to follow the strains. The slice is placed in front of a camera to record the mass loss on a control specimen and to follow the displacement of the targets on a regular basis until the end of the tests. The radial and tangential displacements are calculated in a cylindrical coordinates and the point saturation fiber (FSP) are deduced. In addition the initiation and the crack propagation are followed in a green wood slice subjected to natural drying. At the end finite element model is developed and compared to experimental data.
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