Acoustic Emission Timing Features of Salt Rock Under Brazilian Splitting

  • WANG Weichao ,
  • ZHANG Wujiao ,
  • LIU Xiliang ,
  • WANG Li ,
  • LI Huigui
  • 1. School of Civil Engineering, Henan Polytechnic University, Jiaozuo 454003, China;
    2. Xuchang Shoushan Coking Co., Ltd., China Pingmei Shenma Group, Xuchang 461700, China;
    3. School of Energy Science and Engineering, Henan Polytechnic University, Jiaozuo 454003, China

Received date: 2014-06-05

  Revised date: 2014-07-23

  Online published: 2014-09-16


Brazilian split tests for salt rock were carried out with a servo-controlled test machine RMT-150B, and acoustic emission (AE) detections were conducted at the same time. The results indicate that the deformation characteristics before the peak load in Brazilian split tests are similar to those of uniaxial compression test which could be divided into four stages, namely compression, elasticity, yielding and failure stage. AE events in compression and elasticity stage are totally low in energy and accumulation number. Starting from the yield stage, AE events increase rapidly, and energy and accumulation number grow quickly. The specimens suddenly fracture when the load exceeds capacity, and the residual stress rapidly disappears. In this test, the sign for specimen failure could be judged through observing ringing counting, accumulation number and energy, so as to provide reference for engineering practice.

Cite this article

WANG Weichao , ZHANG Wujiao , LIU Xiliang , WANG Li , LI Huigui . Acoustic Emission Timing Features of Salt Rock Under Brazilian Splitting[J]. Science & Technology Review, 2014 , 32(25) : 55 -58 . DOI: 10.3981/j.issn.1000-7857.2014.25.009


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