THE FRACTURE AND TOUGHNESS OF WOODS
THE FRACTURE AND TOUGHNESS OF WOODS
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DOI：
10.1098/rspa.1985.0034
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发表时间：
1985-01-01
影响因子：
--
通讯作者：
MAITI, SK
中科院分区：
文献类型：
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作者：
ASHBY, MF;EASTERLING, KE;MAITI, SK
用扫描电子显微镜观察了不同木材中的裂纹扩展，观察到的结果与断裂韧性的测量有关。结果表明，木材的韧性与木材的密度有很好的关系，可以用一个简单的模型来解释。木材垂直于纹理的裂纹的表观断裂韧性比平行于纹理扩展的裂纹的表观断裂韧性大约10倍。这种差异可以用非常各向异性固体的断裂力学来解释。
Crack propagation in various woods has been examined by scanning electron microscopy, and the observations related to measurements of fracture toughness. It is found that the toughness is related in a simple way to the density of the wood, which is explained by a straightforward model. The apparent fracture toughness of wood for cracks that lie normal to the grain is larger, by a factor of about 10, than that for cracks which propagate parallel to the grain. This difference can be explained in terms of the fracture mechanics of very anisotropic solids.