A universal direct tensile testing method for measuring the tensile strength of rocks
There is limited applicability to the current method for testing the direct tensile strength of rocks because it places stringent requirements on the testing equipment. This work suggests a universal method based on the “compression-to-tension” idea in response to these difficulties. By applying pre...
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Elsevier
2024-10-01
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| Series: | International Journal of Mining Science and Technology |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2095268624001423 |
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| author | Yang Wu Jianfeng Liu Zhide Wu Junjie Liu Yonghui Zhao Huining Xu Jinbing Wei Wen Zhong |
| author_facet | Yang Wu Jianfeng Liu Zhide Wu Junjie Liu Yonghui Zhao Huining Xu Jinbing Wei Wen Zhong |
| author_sort | Yang Wu |
| collection | DOAJ |
| description | There is limited applicability to the current method for testing the direct tensile strength of rocks because it places stringent requirements on the testing equipment. This work suggests a universal method based on the “compression-to-tension” idea in response to these difficulties. By applying pressure, this technique makes it possible to test the tensile strength of rocks directly with any conventional compression test machines. Granite was utilized as the test material in order to validate this suggested testing method, and the results showed what follows. Upon determining the true fracture area through digital reconstruction, an average calculated tensile strength of 5.97 MPa with a Cv of 0.04 was obtained. There is a positive correlation between tensile strength and the joint roughness coefficient (JRC) of the failure surface. The aggregation mode of AE events with the loading process conforms to the damage characteristics of rock tensile failure. The direct tensile testing method proposed in this study not only has high universality but also produces test results with outstanding consistency. Additionally, factors influencing the results of the tensile test are pointed out, and recommendations for optimizing the suggested testing method are offered. |
| format | Article |
| id | doaj-art-99a8c0617dff4b2ca347e6157b7352d8 |
| institution | OA Journals |
| issn | 2095-2686 |
| language | English |
| publishDate | 2024-10-01 |
| publisher | Elsevier |
| record_format | Article |
| series | International Journal of Mining Science and Technology |
| spelling | doaj-art-99a8c0617dff4b2ca347e6157b7352d82025-08-20T01:59:30ZengElsevierInternational Journal of Mining Science and Technology2095-26862024-10-0134101443145110.1016/j.ijmst.2024.09.009A universal direct tensile testing method for measuring the tensile strength of rocksYang Wu0Jianfeng Liu1Zhide Wu2Junjie Liu3Yonghui Zhao4Huining Xu5Jinbing Wei6Wen Zhong7State Key Laboratory of Hydraulic and Mountain River Engineering, Sichuan University, Chengdu 610065, China; College of Water Resource and Hydropower, Sichuan University, Chengdu 610065, ChinaState Key Laboratory of Hydraulic and Mountain River Engineering, Sichuan University, Chengdu 610065, China; College of Water Resource and Hydropower, Sichuan University, Chengdu 610065, China; Corresponding author.CNPC Key Laboratory of Oil and Gas Underground Storage Engineering, Langfang 065007, ChinaState Key Laboratory of Hydraulic and Mountain River Engineering, Sichuan University, Chengdu 610065, China; College of Water Resource and Hydropower, Sichuan University, Chengdu 610065, ChinaCollege of Water Resource and Hydropower, Sichuan University, Chengdu 610065, ChinaState Key Laboratory of Hydraulic and Mountain River Engineering, Sichuan University, Chengdu 610065, China; College of Water Resource and Hydropower, Sichuan University, Chengdu 610065, ChinaState Key Laboratory of Hydraulic and Mountain River Engineering, Sichuan University, Chengdu 610065, China; College of Water Resource and Hydropower, Sichuan University, Chengdu 610065, ChinaCollege of Resources and Environmental Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, ChinaThere is limited applicability to the current method for testing the direct tensile strength of rocks because it places stringent requirements on the testing equipment. This work suggests a universal method based on the “compression-to-tension” idea in response to these difficulties. By applying pressure, this technique makes it possible to test the tensile strength of rocks directly with any conventional compression test machines. Granite was utilized as the test material in order to validate this suggested testing method, and the results showed what follows. Upon determining the true fracture area through digital reconstruction, an average calculated tensile strength of 5.97 MPa with a Cv of 0.04 was obtained. There is a positive correlation between tensile strength and the joint roughness coefficient (JRC) of the failure surface. The aggregation mode of AE events with the loading process conforms to the damage characteristics of rock tensile failure. The direct tensile testing method proposed in this study not only has high universality but also produces test results with outstanding consistency. Additionally, factors influencing the results of the tensile test are pointed out, and recommendations for optimizing the suggested testing method are offered.http://www.sciencedirect.com/science/article/pii/S2095268624001423RocksDirect tensile strengthGraniteAcoustic emissionJRC |
| spellingShingle | Yang Wu Jianfeng Liu Zhide Wu Junjie Liu Yonghui Zhao Huining Xu Jinbing Wei Wen Zhong A universal direct tensile testing method for measuring the tensile strength of rocks International Journal of Mining Science and Technology Rocks Direct tensile strength Granite Acoustic emission JRC |
| title | A universal direct tensile testing method for measuring the tensile strength of rocks |
| title_full | A universal direct tensile testing method for measuring the tensile strength of rocks |
| title_fullStr | A universal direct tensile testing method for measuring the tensile strength of rocks |
| title_full_unstemmed | A universal direct tensile testing method for measuring the tensile strength of rocks |
| title_short | A universal direct tensile testing method for measuring the tensile strength of rocks |
| title_sort | universal direct tensile testing method for measuring the tensile strength of rocks |
| topic | Rocks Direct tensile strength Granite Acoustic emission JRC |
| url | http://www.sciencedirect.com/science/article/pii/S2095268624001423 |
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