Fatigue of structural plywood under cyclic shear through thickness II: a new method for fatigue life prediction |
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Authors: | Takanori Sugimoto Yasutoshi Sasaki Mariko Yamasaki |
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Institution: | (1) Graduate School of Bioagricultural Sciences, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8601, Japan;(2) Graduate School of Engineering, Nagoya Institute of Technology, Nagoya 466-8555, Japan |
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Abstract: | For plywood specimens under shear through the thickness, a fatigue life prediction method based on strain energy has been
newly developed with the fatigue process and failure criterion applicable to various loading conditions. Once the fatigue
process and failure criterion of the plywood specimen were determined by the fatigue data measured under a loading condition
other than the square loading waveform, the fatigue life of a specimen under various loading conditions could be predicted
easily and accurately by the first cycle loading test. The relationship between stress level and the predicted fatigue life
was also similar to that between stress level and the experimentally determined fatigue life. The fatigue life prediction
method proposed may be widely applicable to the prediction of the fatigue life of solid wood and wood composites. |
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Keywords: | Fatigue life prediction Strain energy Shear through thickness Plywood |
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