Next Article in Journal
Sustainable Entrepreneurial Orientation in Family Firms
Next Article in Special Issue
Electrical Energy Storage Systems Feasibility; the Case of Terceira Island
Previous Article in Journal
Radical Prosumer Innovations in the Electricity Sector and the Impact on Prosumer Regulation
Previous Article in Special Issue
A Novel Method for Selecting Protective Seam against Coal and Gas Outburst: A Case Study of Wangjiazhai Coal Mine in China
Article Menu
Issue 7 (July) cover image

Export Article

Open AccessArticle
Sustainability 2017, 9(7), 1209; doi:10.3390/su9071209

A Novel Study of Waveguide Propagation Rules of Coal Rock AE Signal: Effects of Waveguide Size and Installation Method on the Propagation Rules of Coal Rock AE Signal

1,2,* and 3,4
1
School of Energy Engineering, Xi’an University of Science and Technology, Xi’an 710054, China
2
Key Laboratory of Western Mine Exploitation and Hazard Prevention of the Ministry of Education, Xi’an 710054, China
3
China Coal Technology Engineering Group Chongqing Research Institute, Chongqing 400037, China
4
National Key Laboratory of Gas Disaster Monitoring, Preventing and Emergency Controlling, Chongqing 400037, China
*
Author to whom correspondence should be addressed.
Received: 13 June 2017 / Revised: 26 June 2017 / Accepted: 29 June 2017 / Published: 10 July 2017
(This article belongs to the Special Issue Energy Security and Sustainability)

Abstract

The propagation of acoustic emission (AE) signal in waveguide is quite important for AE-based prediction of dynamic disasters in coal rocks. In this study, based on some relevant theories in wave mechanics, the elastic mechanical model of one-dimensional (1D) waveguide was firstly established, and the relationship between AE source signal and the signal at the waveguide’s receiving end was derived. On the basis of theoretical analysis, numerical simulation and laboratory test schemes were designed; additionally, using the standard vibration source method, AE response in different sizes of waveguides were investigated, the effects of waveguide size of waveguide were concluded, and the application conditions of the established theoretical model were clarified. Numerical simulation results fit well with the laboratory test results. Meanwhile, the effects of the sensor’s installation method on the propagation rules of AE signal were examined and appropriate installation method was determined. View Full-Text
Keywords: coal rock; acoustic emission signal; waveguide; size; installation method; propagation rule coal rock; acoustic emission signal; waveguide; size; installation method; propagation rule
Figures

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

Scifeed alert for new publications

Never miss any articles matching your research from any publisher
  • Get alerts for new papers matching your research
  • Find out the new papers from selected authors
  • Updated daily for 49'000+ journals and 6000+ publishers
  • Define your Scifeed now

SciFeed Share & Cite This Article

MDPI and ACS Style

Dong, G.; Zou, Y. A Novel Study of Waveguide Propagation Rules of Coal Rock AE Signal: Effects of Waveguide Size and Installation Method on the Propagation Rules of Coal Rock AE Signal. Sustainability 2017, 9, 1209.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Sustainability EISSN 2071-1050 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top