H∞ Deconvolution of Ultrasonic Non Destructive Testing Signals for Defect Identification
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Begun in 1973, the Review of Progress in Quantitative Nondestructive Evaluation (QNDE) is the premier international NDE meeting designed to provide an interface between research and early engineering through the presentation of current ideas and results focused on facilitating a rapid transfer to engineering development.
This site provides free, public access to papers presented at the annual QNDE conference between 1983 and 1999, and abstracts for papers presented at the conference since 2001.
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Abstract
Pulse-echo reflection techniques are used for ultrasonic flaw detection in most commercial instruments [1,2]. The ultrasonic wave, generated by a piezoelectric transducer coupled to the test specimen, propagates through the material and part of its energy is reflected when it encounters a non-homogeneity or discontinuity in its path, while the remainder is reflected by the back surface of the test specimen. The flaw echo contains information regarding the material discontinuity that the ultrasonic wave has encountered in its path.