An end-notched beam test for specific fracture energy in mixed mode in timber

被引：3
|
作者：
Mansfield-Williams, HD [1 ]
机构：
[1] Buckinghamshire Chilterns Univ Coll, Forest Prod Res Ctr, High Wycombe, Bucks, England
来源：
MATERIALS AND STRUCTURES | 2001年 / 34卷 / 238期
关键词：
Fracture Energy; Mixed Mode; Laminate Veneer Lumber; Stable Crack Growth; Neutral Plane;
D O I：
10.1007/BF02480592
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
A simple method for achieving stable crack propagation In a beam notched at a support is presented. The method allows the measurement of fracture energy in mixed mode G(f,mix). Results from a small number of laminated veneer lumber specimens suggest that there is a relationship between G(f,mix) and density and that the ratio G(f,mix)/(G(f,I) + G(f,II)) is about 0.35. Calculations of fracture energy in mode I G(f,I), and mode II G(f,II) did nor comcide with values from mode-specific tests, Indicating that an adjustment is necessary to take account of the interaction between the modes.
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页码：224 / 227
页数：4
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