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Title: Characterizing fracture types in rock/coal subjected to quasi-static indentation using acoustic emission technique

Abstract

Geological materials emit transient noises when stressed. The rate and pattern of these transient noises or acoustic emissions (A.E. hereafter) depend on the stages of deformation of the material. It has been demonstrated that rock/coal fracture processes under stress consist of three distinctive stages--crack initiation, propagation and ultimate fracture-- and that coalescence of numerous cracks leads to ultimate failure rather than the propagation of a single crack. This paper presents an analysis of fracture formation in rock/coal specimens subjected to straight wedge indentors using A.E. technique.

Authors:
Publication Date:
Research Org.:
Mining Engineering Dept., West Virginia Univ., Morgantown, WV 26506
OSTI Identifier:
5270057
Report Number(s):
CONF-8510159-
Journal ID: CODEN: JACED
Resource Type:
Conference
Journal Name:
J. Acoust. Emiss.; (United States)
Additional Journal Information:
Conference: 2. international conference on acoustic emission, Lake Tahoe, NV, USA, 28 Oct 1985
Country of Publication:
United States
Language:
English
Subject:
01 COAL, LIGNITE, AND PEAT; 58 GEOSCIENCES; COAL; ACOUSTIC EMISSION TESTING; FRACTURE MECHANICS; ROCKS; CRACK PROPAGATION; DEFORMATION; ROCK MECHANICS; SEISMIC NOISE; STRESSES; ACOUSTIC TESTING; CARBONACEOUS MATERIALS; ENERGY SOURCES; FOSSIL FUELS; FUELS; MATERIALS; MATERIALS TESTING; MECHANICS; NOISE; NONDESTRUCTIVE TESTING; TESTING; 010600* - Coal, Lignite, & Peat- Properties & Composition; 580300 - Mineralogy, Petrology, & Rock Mechanics- (-1989)

Citation Formats

Khair, A W. Characterizing fracture types in rock/coal subjected to quasi-static indentation using acoustic emission technique. United States: N. p., 1985. Web.
Khair, A W. Characterizing fracture types in rock/coal subjected to quasi-static indentation using acoustic emission technique. United States.
Khair, A W. 1985. "Characterizing fracture types in rock/coal subjected to quasi-static indentation using acoustic emission technique". United States.
@article{osti_5270057,
title = {Characterizing fracture types in rock/coal subjected to quasi-static indentation using acoustic emission technique},
author = {Khair, A W},
abstractNote = {Geological materials emit transient noises when stressed. The rate and pattern of these transient noises or acoustic emissions (A.E. hereafter) depend on the stages of deformation of the material. It has been demonstrated that rock/coal fracture processes under stress consist of three distinctive stages--crack initiation, propagation and ultimate fracture-- and that coalescence of numerous cracks leads to ultimate failure rather than the propagation of a single crack. This paper presents an analysis of fracture formation in rock/coal specimens subjected to straight wedge indentors using A.E. technique.},
doi = {},
url = {https://www.osti.gov/biblio/5270057}, journal = {J. Acoust. Emiss.; (United States)},
number = ,
volume = ,
place = {United States},
year = {Tue Jan 01 00:00:00 EST 1985},
month = {Tue Jan 01 00:00:00 EST 1985}
}

Conference:
Other availability
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