caa a22 4500 46324768X CHVBK 20180405153330.0 cr unu---uuuuu 170326e20070801xx s 000 0 eng 10.1007/s10086-006-0864-6 doi (NATIONALLICENCE)springer-10.1007/s10086-006-0864-6 Fatigue of structural plywood under cyclic shear through thickness I: fatigue process and failure criterion based on strain energy [Elektronische Daten] [Takanori Sugimoto, Yasutoshi Sasaki, Mariko Yamasaki] The fatigue behavior of plywood specimens under shear through thickness was examined on the basis of strain energy to obtain common empirical equations for the fatigue process and failure criterion under various loading conditions. Specimens were cut from commercial plywood panels of 9-mm thickness. Loading conditions were set as follows: a square waveform at a loading frequency of 0.5 Hz, a triangular waveform at 0.5 Hz, and a triangular waveform at 5.0 Hz. Peak stress applied was determined to be 0.5, 0.7, and 0.9 of static strength, that is, stress levels of 0.5, 0.7, and 0.9. The stress-strain relationships were measured throughout the fatigue test, and the strain energy was obtained at each loading cycle. Loading conditions apparently affected the relationship between stress level and fatigue life. On the other hand, the relationship between mean strain energy per cycle and fatigue life was found to be independent of loading conditions. Mean strain energy per cycle obtained as the fatigue limit was 5.85 kJ/m3 per cycle. Assuming that the accumulation of strain energy is a fatigue indicator, the fatigue process and failure criterion for the plywood specimens under the three loading conditions were commonly expressed by the relationship between cumulative strain energy and loading cycles. The Japan Wood Research Society, 2007 Loading waveform nationallicence Loading frequency nationallicence Strain energy nationallicence Shear through thickness nationallicence Plywood nationallicence Sugimoto Takanori Graduate School of Bioagricultural Sciences, Nagoya University, 464-8601, Furo-cho, Chikusa-ku, Nagoya, Japan aut Sasaki Yasutoshi Graduate School of Bioagricultural Sciences, Nagoya University, 464-8601, Furo-cho, Chikusa-ku, Nagoya, Japan aut Yamasaki Mariko Graduate School of Engineering, Nagoya Institute of Technology, 466-8555, Nagoya, Japan aut Journal of Wood Science Springer-Verlag 53/4(2007-08-01), 296-302 1435-0211 53:4<296 2007 53 10086 https://doi.org/10.1007/s10086-006-0864-6 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10086-006-0864-6 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Sugimoto Takanori Graduate School of Bioagricultural Sciences, Nagoya University, 464-8601, Furo-cho, Chikusa-ku, Nagoya, Japan aut NATIONALLICENCE 700 1- Sasaki Yasutoshi Graduate School of Bioagricultural Sciences, Nagoya University, 464-8601, Furo-cho, Chikusa-ku, Nagoya, Japan aut NATIONALLICENCE 700 1- Yamasaki Mariko Graduate School of Engineering, Nagoya Institute of Technology, 466-8555, Nagoya, Japan aut NATIONALLICENCE 773 0- Journal of Wood Science Springer-Verlag 53/4(2007-08-01), 296-302 1435-0211 53:4<296 2007 53 10086 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer