标题:Inhomogeneous Micro-Structure Influence on Macro-Crack of Sandstone
作者:Tan, Yunliang; Yin, Yanchun; Huang, Dongmei
作者机构:[Tan, Yunliang; Yin, Yanchun; Huang, Dongmei] Shandong Univ Sci & Technol, Key Lab Mine Disaster Prevent & Control, Qingdao 266590, Shandong, Peoples 更多
通讯作者:Tan, YL
通讯作者地址:[Tan, YL]Shandong Univ Sci & Technol, Key Lab Mine Disaster Prevent & Control, Qingdao 266590, Shandong, Peoples R China.
来源:JOURNAL OF TESTING AND EVALUATION
出版年:2013
卷:41
期:6
页码:1024-1031
DOI:10.1520/JTE20130039
关键词:SEM scanning; fractal dimension; brittleness; inhomogeneity;; microstructure; macrocrack
摘要:SEM scanning and fractal dimension estimation were adopted to study the inhomogeneous microstructure features and its influences on the failure pattern of sandstone. The results show that different sandstones are of different self-similarities of microstructure. The average homogeneities of lithic arenite, greywacke, and subfeldspathic arenite are 5.61, 3.39, and 4.57 and estimated fractal dimensions of microstructure are 1.94, 1.52, and 1.84, respectively, indicating that the homogeneity of microstructure is well consistent with fractal dimension. The resulted macro-cracks of lithic arenite, greywacke, and subfeldspathic arenite are vertical cleavages, unordered discontinuous macro-cracks, and inclined macro-crack, respectively. The brittleness of lithic arenite, greywacke, and subfeldspathic arenite are 2.46, 3.54, and 2.61, respectively. The sandstone of brittleness tends to be easily ruptured in an abrupt manner, accompanying a sudden release of large elastic energy.
收录类别:SCIE
WOS核心被引频次:2
资源类型:期刊论文
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