Viscoelastic behaviour of aged and non-aged spruce wood in the radial direction

Julien Froidevaux, Thomas Volkmer, Christelle Ganne-Chédeville, Joseph Gril & Parviz Navi
The mechanical behaviour of non-aged (modern) and aged spruce [Picea abies (L.) Karst.] wood was investigated in the radial direction using a microtensile testing device. The size of the samples was 5033 mm (radialtangential longitudinal). Elastic, creep, relaxation, rupture and mechanosorption tests were carried out under controlled temperature and relative humidity. Optical and electronic micrographs were produced in order to correlate the mechanical behaviour with the wood structure. Results indicate that the overall mechanical properties...
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