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NUMERICAL SMOOTHING OF ULTRASONIC BACKSCATTERED SIGNALS BY CONVOLUTION

 

作者: H.J. PONGRATZ,   H. WILLEMS,   W. ARNOLD,  

 

期刊: Nondestructive Testing Communications  （Taylor Available online 1983）
卷期: Volume 1, issue 1  

页码: 19-25

 

ISSN:0278-0895

 

年代: 1983

 

DOI:10.1080/10589758308952885

 

出版商: Taylor & Francis Group

 

数据来源: Taylor

 

摘要:

We determine the attenuation constant of a single ultrasonic backscattered curve by convolution of the back-scattered signal with a gaussian of width D closely related to the structure of the interference pattern superimposed. The interference pattern is caused by incomplete phase cancellation of the scattered waves at the ensemble of polycrystals.

 

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