Applicability of the losipescu shear test on the measurement of the shear properties of wood |
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| Authors: | H Yoshihara H Ohsaki Y Kubojima M Ohta |
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| Institution: | (1) Faculty of Science and Engineering, Shimane University, 690-8504 Matsue, Japan;(2) Hokkaido Forest Products Research Institute, 071-0198 Asahikawa, Japan;(3) Forestry and Forest Products Research Institute, 305-8687 Tsukuba, Japan;(4) Graduate School of Agricultural and Life Sciences, The University of Tokyo, 113-8657 Tokyo, Japan |
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| Abstract: | We examined the applicability of the Iosipescu shear test for measuring the shear properties of wood. Quarter-sawn board of sitka spruce (Picea sitchensis Carr.) and shioji (Japanese ash,Fraxinus spaethiana Lingelsh. were used for the specimens. Iosipescu shear tests were conducted with two types of specimen whose longitudinal and radial directions coincided with the loading direction. The shear modulus, yield shear stress, and shear strength were obtained and were compared with those obtained by the torsion tests of rectangular bars. The results are summarized as follows: (1) The Iosipescu shear test is effective in measuring the shear modulus and the yield shear stress. (2) To measure the shear strength properly by the Iosipescu shear test, the configuration of specimen and the supporting condition should be examined in more in detail. |
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| Keywords: | Iosipescu shear test Shear modulus Yield shear stress Shear strength |
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