THERMAL SCIENCE

International Scientific Journal

Peng Gong

,

Zhan-Guo Ma

,

Xiao-Yan Ni

,

Yang Li

,

Yong-Heng Chen

AN EXPERIMENTAL STUDY ON THE DAMAGE AND ACOUSTIC EMISSION CHARACTER OF RAW COALUNDER UNIAXIAL COMPRESSION CONDITION

ABSTRACT
In the paper, the acoustic emission character is analyzed using a new damage variable which is defined based on ring-down count or energy count of acoustic emission and the damage model of raw coal under uniaxial compression is thus established. The results show that acoustic emission information can reflect inter­nal damage of raw coal and is closely related with primary crack compression and evolutionary course of new crack generation, growth, and connectivity.
KEYWORDS
rock mechanics, damage, compression tests
PAPER SUBMITTED: 2020-07-10
PAPER REVISED: 2020-09-07
PAPER ACCEPTED: 2021-02-02
PUBLISHED ONLINE: 2021-12-24
DOI REFERENCE: https://doi.org/10.2298/TSCI2106537G
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2021, VOLUME 25, ISSUE Issue 6, PAGES [4537 - 4543]
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An experimental study on the damage and acoustic emission character of raw coalunder uniaxial compression condition

© 2024 Society of Thermal Engineers of Serbia. Published by the Vinča Institute of Nuclear Sciences, National Institute of the Republic of Serbia, Belgrade, Serbia. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International licence