Journal
NONDESTRUCTIVE TESTING AND EVALUATION
Volume 24, Issue 1-2, Pages 103-120Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/10589750802195519
Keywords
eddy current; cracks; modelling; feature extraction; parameter estimation
Funding
- Air Force Office of Scientific Research
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Reliable detection of both surface and subsurface cracks around fastener sites continues to be a need for maintaining ageing aircraft structures. In this work, a comprehensive overview of both experimental and modelling work addressing eddy current crack detection around fastener holes in multi-layer structures is presented. This overview consists of a strategy for the application of computational methods along with case studies that demonstrate the role of modelling for this particular class of problems. The state-of-the-art on eddy current modelling applicable to low-frequency eddy current problems is reviewed. The role of modelling in feature extraction algorithm development, crack characterisation, and probability of detection evaluation is highlighted.
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