Journal of Northeastern University Natural Science ›› 2018, Vol. 39 ›› Issue (12): 1774-1778.DOI: 10.12068/j.issn.1005-3026.2018.12.020

• Resources & Civil Engineering • Previous Articles     Next Articles

An Improved Automatic Algorithm of Acoustic Emission P-Wave Arrival Time Picking

LIU Fei-yue, YANG Tian-hong, DENG Wen-xue, ZHANG Peng-hai   

  1. School of Resources & Civil Engineering, Northeastern University, Shenyang 110819, China.
  • Received:2017-08-23 Revised:2017-08-23 Online:2018-12-15 Published:2018-12-19
  • Contact: YANG Tian-hong
  • About author:-
  • Supported by:
    -

Abstract: Acoustic emission(AE)monitoring technique has been widely applied in the area of geotechnical engineering. Automated arrival time picking of P-wave is the fundament and key in the further rock mechanical AE study. In order to get the more accurate arrival time of AE single, an improved Pphase-Picker P-wave arrival time picking algorithm was proposed and its principle was described in detail. Several automatic arrival time picking algorithm were compared in 1000 typical AE wave, the result indicated that the improved algorithm can not only get a more accurate P-wave arrival time rapidly, but also can get an error estimation of P-wave arrival time.

Key words: P-wave arrival time picking, Pphase-Picker algorithm, certain degree, error estimation, acoustic emission

CLC Number: