PSI - Issue 13

Odounga Bernard et al. / Procedia Structural Integrity 13 (2018) 347–352 Odounga Bernard / Structural Integrity Procedia 00 (2018) 000–000

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Fig. 1. From the tree to the specimen. .

2.2. Experimental device and protocol

The experimental setup is composed of a camera placed at a distance of 675 mm from the specimen to record images, see Fig.2. The tensile machine is equipped with an Arcan system, in which a the wooden MMCG specimens were mounted. Special lighting illuminated the grid-equipped part.

Fig. 2. Experimental setup .

2.3. Grid method

The grid method is a technique that consists of transferring a grid to a substrate to be analyzed. In this case, we assume that the grid faithfully follows the displacements and the strains of the surface on which it is transferred. The principle of this method has already been explained in a previous papers Odounga et al. (2018). The objective here is