Effects of strain rate on fracture toughness and energy release rate of gas shales

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• 作者：Bankim Mahanta^a ; ^b ; ^{bankim42mahanta@gmail.com} ; Ashutosh Tripathy^b ; ^{ashutripathy@iitb.ac.in} ; Vikram Vishal^b ; T N Singh^b ; P G Ranjith^c
• 关键词：Fracture toughness ; Energy-release rate ; Applied energy ; Gas shales ; Strain rate
• 刊名：Engineering Geology
• 出版年：2017
• 出版时间：23 February 2017
• 年：2017
• 卷：218
• 期：Complete
• 页码：39-49
• 全文大小：2062 K
• 卷排序：218

文摘

Multiple mode (I/II/mixed) fracture toughness tests conducted on gas shales Fracture toughness and energy release rate are directly dependent on strain rate. Strength and stiffness of the shales are high at higher strain rates. Mode I requires minimum applied energy for crack growth while mode II maximum. Mode I exhibits the maximum energy release rate.