Experimental Investigation of Sandstone under Cyclic Loading: Damage Assessment Using Ultrasonic Wave Velocities and Changes in Elastic Modulus
This laboratory study investigated the damage evolution of sandstone specimens under two types of cyclic loading by monitoring and analyzing changes in the elastic moduli and the ultrasonic velocities during loading. During low-level cyclic loading, the stiffness degradation method was unable to des...
Saved in:
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Wiley
2018-01-01
|
| Series: | Shock and Vibration |
| Online Access: | http://dx.doi.org/10.1155/2018/7845143 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1832550053432000512 |
|---|---|
| author | Sen Yang Nong Zhang Xiaowei Feng Jiaguang Kan Dongjiang Pan Deyu Qian |
| author_facet | Sen Yang Nong Zhang Xiaowei Feng Jiaguang Kan Dongjiang Pan Deyu Qian |
| author_sort | Sen Yang |
| collection | DOAJ |
| description | This laboratory study investigated the damage evolution of sandstone specimens under two types of cyclic loading by monitoring and analyzing changes in the elastic moduli and the ultrasonic velocities during loading. During low-level cyclic loading, the stiffness degradation method was unable to describe the damage accumulations but the ultrasonic velocity measurements clearly reflected the damage development. A crack density parameter is introduced in order to interpret the changes in the tangential modulus and the ultrasonic velocities. The results show the following. (1) Low-level cyclic loading enhanced the anisotropy of the cracks. This results from the compression of intergranular clay minerals and fatigue failure. (2) Irreversible damage accumulations during cyclic loading with an increasing upper stress limit are the consequence of brittle failure in the sandstone’s microstructure. |
| format | Article |
| id | doaj-art-2cc7fff5ed4b4c0da3ddc4cbf39c1391 |
| institution | Kabale University |
| issn | 1070-9622 1875-9203 |
| language | English |
| publishDate | 2018-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Shock and Vibration |
| spelling | doaj-art-2cc7fff5ed4b4c0da3ddc4cbf39c13912025-02-03T06:07:48ZengWileyShock and Vibration1070-96221875-92032018-01-01201810.1155/2018/78451437845143Experimental Investigation of Sandstone under Cyclic Loading: Damage Assessment Using Ultrasonic Wave Velocities and Changes in Elastic ModulusSen Yang0Nong Zhang1Xiaowei Feng2Jiaguang Kan3Dongjiang Pan4Deyu Qian5Key Laboratory of Deep Coal Resource Mining, Ministry of Education of China, School of Mines, China University of Mining and Technology, Xuzhou, Jiangsu 221116, ChinaKey Laboratory of Deep Coal Resource Mining, Ministry of Education of China, School of Mines, China University of Mining and Technology, Xuzhou, Jiangsu 221116, ChinaKey Laboratory of Deep Coal Resource Mining, Ministry of Education of China, School of Mines, China University of Mining and Technology, Xuzhou, Jiangsu 221116, ChinaKey Laboratory of Deep Coal Resource Mining, Ministry of Education of China, School of Mines, China University of Mining and Technology, Xuzhou, Jiangsu 221116, ChinaKey Laboratory of Deep Coal Resource Mining, Ministry of Education of China, School of Mines, China University of Mining and Technology, Xuzhou, Jiangsu 221116, ChinaKey Laboratory of Deep Coal Resource Mining, Ministry of Education of China, School of Mines, China University of Mining and Technology, Xuzhou, Jiangsu 221116, ChinaThis laboratory study investigated the damage evolution of sandstone specimens under two types of cyclic loading by monitoring and analyzing changes in the elastic moduli and the ultrasonic velocities during loading. During low-level cyclic loading, the stiffness degradation method was unable to describe the damage accumulations but the ultrasonic velocity measurements clearly reflected the damage development. A crack density parameter is introduced in order to interpret the changes in the tangential modulus and the ultrasonic velocities. The results show the following. (1) Low-level cyclic loading enhanced the anisotropy of the cracks. This results from the compression of intergranular clay minerals and fatigue failure. (2) Irreversible damage accumulations during cyclic loading with an increasing upper stress limit are the consequence of brittle failure in the sandstone’s microstructure.http://dx.doi.org/10.1155/2018/7845143 |
| spellingShingle | Sen Yang Nong Zhang Xiaowei Feng Jiaguang Kan Dongjiang Pan Deyu Qian Experimental Investigation of Sandstone under Cyclic Loading: Damage Assessment Using Ultrasonic Wave Velocities and Changes in Elastic Modulus Shock and Vibration |
| title | Experimental Investigation of Sandstone under Cyclic Loading: Damage Assessment Using Ultrasonic Wave Velocities and Changes in Elastic Modulus |
| title_full | Experimental Investigation of Sandstone under Cyclic Loading: Damage Assessment Using Ultrasonic Wave Velocities and Changes in Elastic Modulus |
| title_fullStr | Experimental Investigation of Sandstone under Cyclic Loading: Damage Assessment Using Ultrasonic Wave Velocities and Changes in Elastic Modulus |
| title_full_unstemmed | Experimental Investigation of Sandstone under Cyclic Loading: Damage Assessment Using Ultrasonic Wave Velocities and Changes in Elastic Modulus |
| title_short | Experimental Investigation of Sandstone under Cyclic Loading: Damage Assessment Using Ultrasonic Wave Velocities and Changes in Elastic Modulus |
| title_sort | experimental investigation of sandstone under cyclic loading damage assessment using ultrasonic wave velocities and changes in elastic modulus |
| url | http://dx.doi.org/10.1155/2018/7845143 |
| work_keys_str_mv | AT senyang experimentalinvestigationofsandstoneundercyclicloadingdamageassessmentusingultrasonicwavevelocitiesandchangesinelasticmodulus AT nongzhang experimentalinvestigationofsandstoneundercyclicloadingdamageassessmentusingultrasonicwavevelocitiesandchangesinelasticmodulus AT xiaoweifeng experimentalinvestigationofsandstoneundercyclicloadingdamageassessmentusingultrasonicwavevelocitiesandchangesinelasticmodulus AT jiaguangkan experimentalinvestigationofsandstoneundercyclicloadingdamageassessmentusingultrasonicwavevelocitiesandchangesinelasticmodulus AT dongjiangpan experimentalinvestigationofsandstoneundercyclicloadingdamageassessmentusingultrasonicwavevelocitiesandchangesinelasticmodulus AT deyuqian experimentalinvestigationofsandstoneundercyclicloadingdamageassessmentusingultrasonicwavevelocitiesandchangesinelasticmodulus |