Statistical Flaw Detection: Theory

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Date
1984
Authors
Fertig, K.
Richardson, J.
Elsley, R.
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Review of Progress in Quantitative Nondestructive Evaluation
Center for Nondestructive Evaluation

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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In this paper we discuss the problem of flaw detection using ultrasound. We describe the decision theoretic optimal algorithm for interior flaw detection in the presence of noise. Based on this algorithm, an efficient sub-optimal algorithm is derived that can be implemented in real time. Finally, we present some results of computer simulation tests comparing the new algorithm with a more traditional video detection scheme based on peak waveform thresholding. Preliminary evaluation of the new detection scheme under laboratory experimental conditions is described in a companion paper [Elsley, Fertig, and Richardson (1983)]. We first start with a brief statement of the specific detection problem we are addressing.

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Sun Jan 01 00:00:00 UTC 1984