Real-time mode-I fracture toughness and fracture characteristics of granite from 20 C-o to 600 C-o
文献类型：期刊论文
| 作者 | Hu, Yuefei2,3; Hu, Yaoqing2,3; Jin, Peihua2; Zhao, Guokai1,4; Zhao, Zhongrui2; Li, Chun2,3 |
| 刊名 | ENGINEERING FRACTURE MECHANICS
 |
| 出版日期 | 2023 |
| 卷号 | 277期号:-页码:- |
| 关键词 | High temperature Granite X-ray computed tomography Fracture toughness Joint roughness coefficient |
| ISSN号 | 0013-7944 |
| 英文摘要 | The mode-I fracture toughness of semicircular bend granite specimens at high temperature was tested in real time, and the failure specimens were examined using X-ray computed tomography. The results showed that with increasing temperature, the fracture toughness increased from room temperature (20 C-o) to 200 C-o, then decreased beyond 200 C-o. Quasibrittle failure was observed up to 500 C-o, followed by plastic characteristics at 600 C-o. The cracks tended to propagate along the boundaries of mineral crystals. With increasing temperature, the main cracks became rougher and tended to propagate perpendicular to the tensile stress, and more branch cracks formed. The increase of temperature within a certain range had toughening effect on a variety of rocks and temperature-treatment method affected the mode-I fracture toughness of granite. Compared with the mode-I fracture toughness after cooling to room temperature, the temperature threshold of mode-I fracture toughness of granite at real-time high temperature was higher. The results pro-vide guidance to determine fracture toughness and stability for high-temperature rock engineering. |
| 学科主题 | Mechanics |
| 语种 | 英语 |
| WOS记录号 | WOS:000918025900001 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/35222]  |
| 专题 | 中科院武汉岩土力学所 |
| 作者单位 | 1.State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan, Hubei 430071, China 2.Key Laboratory of In-situ Property-improving Mining of Ministry of Education, Taiyuan University of Technology, Taiyuan, Shanxi 030024, China 3.Institute of Mining Technology, Taiyuan University of Technology, Taiyuan, Shanxi 030024, China 4.State Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing 400044, China |
| 推荐引用方式 GB/T 7714 | Hu, Yuefei,Hu, Yaoqing,Jin, Peihua,et al. Real-time mode-I fracture toughness and fracture characteristics of granite from 20 C-o to 600 C-o[J]. ENGINEERING FRACTURE MECHANICS,2023,277(-):-. |
| APA | Hu, Yuefei,Hu, Yaoqing,Jin, Peihua,Zhao, Guokai,Zhao, Zhongrui,&Li, Chun.(2023).Real-time mode-I fracture toughness and fracture characteristics of granite from 20 C-o to 600 C-o.ENGINEERING FRACTURE MECHANICS,277(-),-. |
| MLA | Hu, Yuefei,et al."Real-time mode-I fracture toughness and fracture characteristics of granite from 20 C-o to 600 C-o".ENGINEERING FRACTURE MECHANICS 277.-(2023):-. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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