Crack detection for aircraft holes with limited accessibility containing fasteners and sealant

This paper presents a study of crack detection methods for holes in structures with limited accessibility containing fasteners with variable interface conditions. For far crack detection, a method was first designed using models, and refined using a signal processing parameter optimization scheme an...

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Bibliographic Details
Main Authors: Aldrin, J C, Mandeville, J R, Judd, D R, Mullis, R T, Kropas-Hughes, C V
Format: Conference Proceeding
Language:English
Online Access:Get full text
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Summary:This paper presents a study of crack detection methods for holes in structures with limited accessibility containing fasteners with variable interface conditions. For far crack detection, a method was first designed using models, and refined using a signal processing parameter optimization scheme and an iterative neural network training process. For near crack detection, a method incorporating the spatial variation of the principal components was developed. Using these methods, improvements in crack detection performance were achieved.
ISSN:0094-243X