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Accession number:
20134016818429
Title:
Experimental study on spectrum characteristic of AE during brittle rock fracture under uniaxial compression based on Welch
Authors:
Wu, Xian Zhen1 Email author wxz2001666@sina.com; Liu, Jian Wei1 Email author jxust_liujianwei@sina.cn; Liu, Hong Xing1 Email author lhx-lhx971@163.com; Liu, Xiang Xin2 Email author liuxiangxin9@163.com
Author affiliation: 1 Jiangxi University of Science and Technology, Ganzhou, China
2 Hebei United University, Tangshan, China
Source title:
Advanced Materials Research
Abbreviated source title:
Adv. Mater. Res.
Volume:
734-737
Monograph title:
Resources and Sustainable Development
Issue date:
2013
Publication year:
2013
Pages:
751-754
Language:
English
ISSN:
10226680
ISBN-13:
9783037857441
Document type:
Conference article (CA)
Conference name:
2013 2nd International Conference on Energy and Environmental Protection, ICEEP 2013
Conference date:
April 19, 2013 - April 21, 2013
Conference location:
Guilin, China
Conference code:
99790
Publisher:
Trans Tech Publications Ltd, Kreuzstrasse 10, Zurich-Durnten, CH-8635, Switzerland
Abstract:
Acoustic emission (AE) phenomenon will occur during the production and propagation of internal cracks, and failure in brittle rock. Under uniaxial loading, the complete stress-strain curves and waveform data were obtained. The Welch spectrum estimation and Cubic spline interpolation method were used to analyze the evolution of F, R values (peak frequency, energy percentage) of AE. The results show that F-values are maintained at 100±20kHz, and the peak points of F and R above 25% which can be used as a precursor to rock failure that their waveform are burst-type. The combined analysis of stress and F, R supplies a more accurately method of predicting the occurrence of rock burst. © (2013) Trans Tech Publications, Switzerland.
Number of references:
6
Main heading:
Loading
Controlled terms:
Acoustic emissions - Brittle fracture - Interpolation - Rock bursts - Rock mechanics - Spectrum analysis - Stress-strain curves
Uncontrolled terms:
Complete stress-strain curve - Cubic spline interpolation method - Energy percentage - Peak frequencies - Spectrum characteristic - Spectrum estimation - Uni-axial compression - Welch spectrum
Classification code:
943 Mechanical and Miscellaneous Measuring Instruments - 942 Electric and Electronic Measuring Instruments - 941 Acoustical and Optical Measuring Instruments - 921.6 Numerical Methods - 944 Moisture, Pressure and Temperature, and Radiation Measuring Instruments - 921 Mathematics - 672 Naval Vessels - 502.1 Mine and Quarry Operations - 421 Strength of Building Materials; Mechanical Properties - 751.2 Acoustic Properties of Materials
DOI: 10.4028/www.scientific.net/AMR.734-737.751
Database:
Compendex
Compilation and indexing terms, © 2013 Elsevier Inc. |
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