Defining Stress Thresholds of Granite Failure Process Based on Acoustic Emission Activity Parameters
In order to study the crack closure stress threshold σcc of hard rock, crack initiation stress threshold σci, stress threshold σcs of crack interaction, and damage stress threshold σc d, uniaxial compression test was carried out on granite samples. Stress sensor and dynamic strain gauge are used to...
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| Format: | Article |
| Language: | English |
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Wiley
2020-01-01
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| Series: | Shock and Vibration |
| Online Access: | http://dx.doi.org/10.1155/2020/8812066 |
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| author | Xingdong Zhao Lei Deng Jitao Xu |
| author_facet | Xingdong Zhao Lei Deng Jitao Xu |
| author_sort | Xingdong Zhao |
| collection | DOAJ |
| description | In order to study the crack closure stress threshold σcc of hard rock, crack initiation stress threshold σci, stress threshold σcs of crack interaction, and damage stress threshold σc d, uniaxial compression test was carried out on granite samples. Stress sensor and dynamic strain gauge are used to measure the load, longitudinal, and lateral deformation of rock in real time. The acoustic emission characteristic parameters of rock fracture process are obtained by using the acoustic emission system. According to the change rule of the AE event rate, cumulative energy, energy rate, duration, and amplitude in the whole process of granite sample fracture, the stress threshold (σcc, σci, σcs, and σc d) of each loading stage in the process of rock sample fracture is obtained. The relationship between the stress threshold (σcc, σci, σcs, and σc d) of each stage and the uniaxial compressive strength σUCS of rock samples in the whole process of fracture is analyzed, which shows that the deformation characteristics and crack evolution law of the rock are unified. The research results can provide some reference for further understanding of rock damage evolution mechanism in engineering field. |
| format | Article |
| id | doaj-art-05c37a0baf874b2b9d2d305ec272b615 |
| institution | Kabale University |
| issn | 1070-9622 1875-9203 |
| language | English |
| publishDate | 2020-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Shock and Vibration |
| spelling | doaj-art-05c37a0baf874b2b9d2d305ec272b6152025-02-03T01:04:59ZengWileyShock and Vibration1070-96221875-92032020-01-01202010.1155/2020/88120668812066Defining Stress Thresholds of Granite Failure Process Based on Acoustic Emission Activity ParametersXingdong Zhao0Lei Deng1Jitao Xu2Geomechanics Research Center, Northeastern University, Shenyang 110819, ChinaGeomechanics Research Center, Northeastern University, Shenyang 110819, ChinaGeomechanics Research Center, Northeastern University, Shenyang 110819, ChinaIn order to study the crack closure stress threshold σcc of hard rock, crack initiation stress threshold σci, stress threshold σcs of crack interaction, and damage stress threshold σc d, uniaxial compression test was carried out on granite samples. Stress sensor and dynamic strain gauge are used to measure the load, longitudinal, and lateral deformation of rock in real time. The acoustic emission characteristic parameters of rock fracture process are obtained by using the acoustic emission system. According to the change rule of the AE event rate, cumulative energy, energy rate, duration, and amplitude in the whole process of granite sample fracture, the stress threshold (σcc, σci, σcs, and σc d) of each loading stage in the process of rock sample fracture is obtained. The relationship between the stress threshold (σcc, σci, σcs, and σc d) of each stage and the uniaxial compressive strength σUCS of rock samples in the whole process of fracture is analyzed, which shows that the deformation characteristics and crack evolution law of the rock are unified. The research results can provide some reference for further understanding of rock damage evolution mechanism in engineering field.http://dx.doi.org/10.1155/2020/8812066 |
| spellingShingle | Xingdong Zhao Lei Deng Jitao Xu Defining Stress Thresholds of Granite Failure Process Based on Acoustic Emission Activity Parameters Shock and Vibration |
| title | Defining Stress Thresholds of Granite Failure Process Based on Acoustic Emission Activity Parameters |
| title_full | Defining Stress Thresholds of Granite Failure Process Based on Acoustic Emission Activity Parameters |
| title_fullStr | Defining Stress Thresholds of Granite Failure Process Based on Acoustic Emission Activity Parameters |
| title_full_unstemmed | Defining Stress Thresholds of Granite Failure Process Based on Acoustic Emission Activity Parameters |
| title_short | Defining Stress Thresholds of Granite Failure Process Based on Acoustic Emission Activity Parameters |
| title_sort | defining stress thresholds of granite failure process based on acoustic emission activity parameters |
| url | http://dx.doi.org/10.1155/2020/8812066 |
| work_keys_str_mv | AT xingdongzhao definingstressthresholdsofgranitefailureprocessbasedonacousticemissionactivityparameters AT leideng definingstressthresholdsofgranitefailureprocessbasedonacousticemissionactivityparameters AT jitaoxu definingstressthresholdsofgranitefailureprocessbasedonacousticemissionactivityparameters |