Technical Note: Characterization of In-Plane Compressive Properties of Plywood by IITRI and End-Loading Compression Tests
Abstract
Panel compression tests can be affected by the propensity of the thin cross-section to undergo axial buckling. Tests were conducted to measure Young's modulus, proportional stress limit, and compression strength in two edgewise directions using an end-loading compression method and an alternate method developed by the Illinois Institute of Technology Research Institute (IITRI). The IITRI method mitigates the potential for buckling without explicit restraint. Young's moduli obtained by the two methods agreed well. In contrast, the test methods had differences in the measurement of proportional stress limit and compression strength.References
ASTM (1994) D 3501-94. Standard test methods for wood-based structural panels in compression. American Society for Testing and Materials, West Conshohocken, PA.nASTM (2003) D 3410/D 3410M-03. Standard test method for compressive properties of polymer matrix composite materials with unsupported gage section by shear loading. American Society for Testing and Materials, West Conshohocken, PA.nSekino N, Sasaki T. (2004) Poisson's ratio of wood-based panels and Poisson's effect of hygroscopic linear expansion under a uniaxially dimensional restraint. J Soc Mater Sci Jpn 53(4):133-174 [in Japanese with summary in English].nTakami I. (1964) Poisson's ratio of plywood. Bull Gov Forest Exp Sta Jpn 53:133-174 [in Japanese with summary in English].nTimoshenko SP. (1955) Strength of materials part 1: Elementary theory and problems, 3rd edition. D. Van Nostrand, New York, NY. 243 pp.n
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