caa a22 4500 463247426 CHVBK 20180405153330.0 cr unu---uuuuu 170326e20070601xx s 000 0 eng 10.1007/s10086-006-0855-7 doi (NATIONALLICENCE)springer-10.1007/s10086-006-0855-7 Fatigue life of structural plywood under two-stage panel shear load: a new cumulative fatigue damage theory [Elektronische Daten] [Takanori Sugimoto, Yasutoshi Sasaki] The fatigue life of structural plywood under two-stage panel shear load was experimentally examined. Two experimental conditions were determined for two-stage fatigue of plywood specimen: one used variable applied stress and the other used variable stress, loading waveform, and loading frequency, because fatigue life of wood composite under constant load depended on loading waveform and loading frequency as well as stress level. The most famous cumulative fatigue damage theory is the Palmgren-Miner rule, which is the summation of the ratio of the applied loading cycle to the fatigue life under each loading stage. However, the applicability of this rule to the two-stage fatigue of wood composites has not been investigated. It was first demonstrated in this study that the fatigue life of the plywood specimen reached in the two-stage fatigue test did not obey the Palmgren-Miner rule. Here, we propose the new cumulative fatigue damage model by modification of the Palmgren-Miner rule on the basis of the assumption that fatigue damage accumulates with loading cycle on a logarithmic scale. The newly proposed model was in good agreement with the fatigue life reached in the two-stage fatigue test. The Japan Wood Research Society, 2007 Two-stage fatigue nationallicence Fatigue life nationallicence Palmgren-Miner rule nationallicence New cumulative fatigue damage model nationallicence Sugimoto Takanori Graduate School of Bioagricultural Sciences, Nagoya University, Furo-cho, Chikusa-ku, 464-8601, Nagoya, Japan aut Sasaki Yasutoshi Graduate School of Bioagricultural Sciences, Nagoya University, Furo-cho, Chikusa-ku, 464-8601, Nagoya, Japan aut Journal of Wood Science Springer-Verlag 53/3(2007-06-01), 211-217 1435-0211 53:3<211 2007 53 10086 https://doi.org/10.1007/s10086-006-0855-7 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10086-006-0855-7 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Sugimoto Takanori Graduate School of Bioagricultural Sciences, Nagoya University, Furo-cho, Chikusa-ku, 464-8601, Nagoya, Japan aut NATIONALLICENCE 700 1- Sasaki Yasutoshi Graduate School of Bioagricultural Sciences, Nagoya University, Furo-cho, Chikusa-ku, 464-8601, Nagoya, Japan aut NATIONALLICENCE 773 0- Journal of Wood Science Springer-Verlag 53/3(2007-06-01), 211-217 1435-0211 53:3<211 2007 53 10086 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer