Statistical Detection Model for Eddy-Current Systems

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1984
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Martinez, J.
Bahr, Alfred
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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 comparing different eddy-current systems (or probes), it is convenient to base the comparison on the magnitude of the signal produced by a certain flaw size and type. However, as in any detection problem, the real effectiveness of such a system in detecting a given flaw is determined by the statistical variations in the flaw signal and the characteristics of the noise added by the system. Hence, the objective of this task has been to develop a statistical model for determining the probability of detecting a given flaw using an eddy-current system. Such a model would be useful not only for comparing different systems, but also for optimizing the detection process. This optimization would consist of using the model to select the probe and operating frequency(ies) that maximize the signal-to-noise ratio (SNR).

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Sun Jan 01 00:00:00 UTC 1984