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Article: Several examinations on the static bending test methods of wood using todomatsu (Japanese fir).
- Article from:
- Forest Products Journal
- Article date:
- February 1, 2003
- Author:
CopyrightCOPYRIGHT 2003 Forest Products Society. This material is published under license from the publisher through the Gale Group, Farmington Hills, Michigan. All inquiries regarding rights should be directed to the Gale Group. (Hide copyright information)
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Abstract
We examined the methods of measuring the bending properties of wood using todomatsu (Abies sachalinensis Fr. Schmidt) by elementary bending theory. Three- and four-point bending tests were conducted under various span/depth ratios, and the load, deflection, loading point displacement, and strain at the bottom of the center were simultaneously measured. The load-deflection, load-loading point displacement, and load-strain relations were regressed into Ramberg-Osgood's function. Young's modulus, proportional limit stress, and bending strength were calculated by substituting the parameters obtained by the regression into the equations derived from ...