›› 2005, Vol. 26 ›› Issue (9): 1379-1384.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Influence analysis of transducers in impact-echo method by wavelet

LIU Ming-gui, YUE Xiang-hong, ZHANG Jie   

  1. Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071, China
  • Received:2004-09-22 Online:2005-09-10 Published:2013-12-30

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Abstract: In the testing of impact-echo method in pile or other structure, the signals are got by velocity or acceleration transducers .The signals include the velocity response of the observing point and the influence of transducer behavior . First of all , the velocity response of pile are simulated by the numerical simulation software FLAC-3D .Secondly, the velocity response comprising the transducer behavior are gained by signal synthesis. And a new time-frequency domain analysis method, wavelet analysis, is introduced to study the influence of transducer on the velocity response. Finally ,a new suppressing method, wavelet suppressing method, for suppressing the influence of transducer is put forward. In order to validate the new suppressing method , several examples are given; and the results indicate that the new suppressing method is practicable.

Key words: impact-echo method, wavelet analysis, velocity response, transducer character

CLC Number: 

  • TU 473.1+6
  • Please send e-mail to pingzhou3@126.com if you would like to read full paper in English for free. Parts of our published papers have English translations.
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