Acoustic Emission Monitoring and Failure Precursors of Sandstone Samples under Various Loading and Unloading Paths
Joint Authors
Xu, Jie
Gao, Yufeng
Jiang, Jingdong
Zuo, Lingling
Source
Issue
Vol. 2017, Issue 2017 (31 Dec. 2017), pp.1-11, 11 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2017-12-27
Country of Publication
Egypt
No. of Pages
11
Main Subjects
Abstract EN
To explore the failure precursors of hard rock, a series of triaxial loading and unloading experiments were carried out on sandstone sample using the acoustic emission systems.
The extreme-point symmetric mode decomposition method (ESMD method) was used to denoise and reconstruct the AE data.
The AE quiet period in Scheme I becomes much more obvious with the confining pressure increasing, which can be regarded as the precursor information of the sample failure under conventional triaxial compression.
Unlike Scheme I, there are no obvious precursory characteristics before failure in Schemes II and III, and the count rate reaches the maximum at the peak point.
When the stress ratio ranges from 0.8 to 1.0, the fractal values of acoustic emission can be used to investigate the failure precursors of samples at a lower confining pressure.
When the time ratio is greater than 0.8 under higher confining pressures, the fractal values of sandstone samples under unloading paths are rapidly reduced, which can be used to predict rock failure at higher confining pressures.
American Psychological Association (APA)
Xu, Jie& Jiang, Jingdong& Zuo, Lingling& Gao, Yufeng. 2017. Acoustic Emission Monitoring and Failure Precursors of Sandstone Samples under Various Loading and Unloading Paths. Shock and Vibration،Vol. 2017, no. 2017, pp.1-11.
https://search.emarefa.net/detail/BIM-1205214
Modern Language Association (MLA)
Xu, Jie…[et al.]. Acoustic Emission Monitoring and Failure Precursors of Sandstone Samples under Various Loading and Unloading Paths. Shock and Vibration No. 2017 (2017), pp.1-11.
https://search.emarefa.net/detail/BIM-1205214
American Medical Association (AMA)
Xu, Jie& Jiang, Jingdong& Zuo, Lingling& Gao, Yufeng. Acoustic Emission Monitoring and Failure Precursors of Sandstone Samples under Various Loading and Unloading Paths. Shock and Vibration. 2017. Vol. 2017, no. 2017, pp.1-11.
https://search.emarefa.net/detail/BIM-1205214
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1205214