Mode II fracture mechanics properties of solid wood measured by the three-point eccentric end-notched flexure test
Mode II fracture mechanics properties of solid wood measured by the three-point eccentric end-notched flexure test
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DOI：
10.1016/j.engfracmech.2015.05.028
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发表时间：
2015-06
影响因子：
5.4
通讯作者：
H. Yoshihara
中科院分区：
文献类型：
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作者：
H. Yoshihara
利用西部铁杉试件进行了三点偏心端部缺口弯曲试验，以确定在II型条件下的断裂力学性能，同时延长裂纹长度范围以稳定裂纹扩展。在试验过程中改变了加载点的位置，考察了加载点位置对起裂和扩展断裂韧度的影响。与传统的三点端面缺口弯曲试验相比，当加载点不太靠近无裂纹区的支撑点时，该方法能较好地获得裂纹扩展长度较大时的断裂力学性能。
A three-point eccentric end-notched flexure test was conducted using specimens of western hemlock to determine the fracture mechanics properties under Mode II conditions while extending the crack length range for stabilising the crack propagation. The location of the loading point was varied during the test, and the effect of the loading point location on the initiation and propagation fracture toughness values was examined. With the proposed method, fracture mechanics properties were appropriately obtained at greater crack propagation lengths than in the conventional three-point end-notched flexure test when the loading point was not extremely close to the supporting point at the crack-free region.