Identification of overlapped ultrasonic NDE echoes with adaptive deconvolution

Author

Feng, Tong ; Xiao-Mei, Xu ; Tso, S.K. ; Luk, B.L.

Author_Institution

Xiamen Univ., Xiamen

fYear

2007

fDate

4-6 Dec. 2007

Firstpage

48

Lastpage

51

Abstract

Ultrasonic nondestructive evaluation (NDE) application, narrow bandwidth of ultrasonic transducer will cause highly overlapped echoes, limiting the characterization performance of inspection. The least mean square (LMS) adaptive algorithm has gained wide applications in adaptive filtering, control and signal processing due to its effectiveness, low computational complexity and simplicity. The purpose of this paper is to investigate the LMS algorithm based adaptive deconvolution techniques in order to improving the time resolution of ultrasonic nondestructive detection. The theoretical basis as well as the implementation is provided. Experimental results on physical ultrasonic NDE data conforms the resolution improvement of proposed method.

Keywords

computational complexity; deconvolution; echo; least mean squares methods; ultrasonic materials testing; ultrasonic transducers; adaptive deconvolution; computational complexity; least mean square adaptive algorithm; overlapped echoes; overlapped ultrasonic nondestructive evaluation; time resolution; ultrasonic transducer; Adaptive algorithm; Adaptive filters; Bandwidth; Deconvolution; Inspection; Least squares approximation; Limiting; Process control; Signal processing algorithms; Ultrasonic transducers; LMS algorithm; adaptive deconvolution; ultrasonic transducer;

fLanguage

English

Publisher

ieee

Conference_Titel

Mechatronics and Machine Vision in Practice, 2007. M2VIP 2007. 14th International Conference on

Conference_Location

Xiamen

Print_ISBN

978-1-4244-1358-4

Electronic_ISBN

978-1-4244-1358-4

Type

conf

DOI

10.1109/MMVIP.2007.4430713

Filename

4430713