Determination of Fracture Toughness for Wood
Publication: Journal of Structural Engineering
Volume 118, Issue 7
Abstract
Determination of fracture toughness values in modes I and II for wood are considered. The testing methods are based on the American Society for Testing and Materials standard “plane strain fracture toughness of metallic materials,” which considers mode I only. For the test, a modification of the standard is proposed. It is proposed that crack initiation be done with a very thin blade saw, and a larger nonlinearity of the load‐displacement curve is suggested. For the test, a similar testing and analysis method is applied to a beam specimen with an end crack. Fracture toughness values are presented, and their dependence on the material and experimental parameters is studied. For mode I., the orientation of the specimen is of great importance. For mode II, the most important variable is the density of the wood material. The fracture toughness value for modes I and II was not affected by the moisture content of the specimens in the range of 10‐20%.
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Information & Authors
Information
Published In
Journal of Structural Engineering
Volume 118 • Issue 7 • July 1992
Pages: 1727 - 1740
Copyright
Copyright © 1992 ASCE.
History
Published online: Jul 1, 1992
Published in print: Jul 1992
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