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lixkyx
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已经检索了。 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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