caa a22 4500 463247388 CHVBK 20180405153330.0 cr unu---uuuuu 170326e20071201xx s 000 0 eng 10.1007/s10086-007-0899-3 doi (NATIONALLICENCE)springer-10.1007/s10086-007-0899-3 Strain-softening behavior of wood under tension perpendicular to the grain [Elektronische Daten] [Kazunari Miyauchi, Koji Murata] Three softwood samples and one hardwood sample were tested under a tension load applied along the radial direction using small clear specimens and the local tension strain was measured using the digital image correlation method. We successfully obtained a stress-strain curve with a strain-softening branch by calculating the stress using the strain distributions in the vicinity where the specimen ruptured. The continuous digital imaging of the specimen proved to be very effective for measuring the strain in quasi-brittle materials such as wood under tension. The nonlinearity of the stress-strain curve was quantified using two parameters representing the deviation from linear elasticity, and the formula of the stress-strain curve was deduced from the interrelation between these parameters. This formula is expressed quite simply by using the modulus of elasticity along the radial direction and another constant that is unique to the material. The Japan Wood Research Society, 2007 Strain softening nationallicence Tension nationallicence Digital image correlation nationallicence Nonlinearity nationallicence Perpendicular to grain nationallicence Miyauchi Kazunari Division of Forest and Biomaterials Science, Graduate School of Agriculture, Kyoto University, 606-8502, Kitashirakawa Oiwake-cho, Sakyoku, Kyoto, Japan aut Murata Koji Division of Forest and Biomaterials Science, Graduate School of Agriculture, Kyoto University, 606-8502, Kitashirakawa Oiwake-cho, Sakyoku, Kyoto, Japan aut Journal of Wood Science Springer-Verlag 53/6(2007-12-01), 463-469 1435-0211 53:6<463 2007 53 10086 https://doi.org/10.1007/s10086-007-0899-3 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10086-007-0899-3 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Miyauchi Kazunari Division of Forest and Biomaterials Science, Graduate School of Agriculture, Kyoto University, 606-8502, Kitashirakawa Oiwake-cho, Sakyoku, Kyoto, Japan aut NATIONALLICENCE 700 1- Murata Koji Division of Forest and Biomaterials Science, Graduate School of Agriculture, Kyoto University, 606-8502, Kitashirakawa Oiwake-cho, Sakyoku, Kyoto, Japan aut NATIONALLICENCE 773 0- Journal of Wood Science Springer-Verlag 53/6(2007-12-01), 463-469 1435-0211 53:6<463 2007 53 10086 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer