Use of Acoustic Emission for the Detection of Brittle Rock Failure under Various Loading Rates
Joint Authors
Song, Ki-Il
Liu, Lang
Shuang, Hai-qing
Li, Shu-gang
Chen, Gao-feng
Source
Issue
Vol. 2018, Issue 2018 (31 Dec. 2018), pp.1-9, 9 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2018-03-08
Country of Publication
Egypt
No. of Pages
9
Main Subjects
Abstract EN
Acoustic emission has a direct correspondence to the internal damage of a material.
To determine the effects of the loading rate on the mechanical properties of rock, the initial damage was characterized using the acoustic emission technique when a uniaxial preloading was imposed on a cylindrical rock sample.
On this basis, the uniaxial compression test was conducted on sandstone that contains initial damage induced under a range of loading rates.
The effects of the initial damage and loading rate on the mechanical properties of rock were analyzed.
The uniaxial preloading generated randomly distributed microcracks in the natural rock.
The results showed that the acoustic emission and positioning technique can characterize accurately the damage and its position due to preloading.
The development of microcracks was found to be strongly dependent on the loading rate.
Moreover, the loading rate accelerated the degradation of the rock strength.
The effects of the loading rate and initial damage on the mechanical properties of rock are a complicated coupled process.
From the experimental test result, a constitutive equation was constructed based on the damage mechanics.
American Psychological Association (APA)
Shuang, Hai-qing& Li, Shu-gang& Liu, Lang& Chen, Gao-feng& Song, Ki-Il. 2018. Use of Acoustic Emission for the Detection of Brittle Rock Failure under Various Loading Rates. Advances in Civil Engineering،Vol. 2018, no. 2018, pp.1-9.
https://search.emarefa.net/detail/BIM-1116260
Modern Language Association (MLA)
Shuang, Hai-qing…[et al.]. Use of Acoustic Emission for the Detection of Brittle Rock Failure under Various Loading Rates. Advances in Civil Engineering No. 2018 (2018), pp.1-9.
https://search.emarefa.net/detail/BIM-1116260
American Medical Association (AMA)
Shuang, Hai-qing& Li, Shu-gang& Liu, Lang& Chen, Gao-feng& Song, Ki-Il. Use of Acoustic Emission for the Detection of Brittle Rock Failure under Various Loading Rates. Advances in Civil Engineering. 2018. Vol. 2018, no. 2018, pp.1-9.
https://search.emarefa.net/detail/BIM-1116260
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1116260