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Materials 2017, 10(6), 616; doi:10.3390/ma10060616

Non-Destructive Inspection of Impact Damage in Composite Aircraft Panels by Ultrasonic Guided Waves and Statistical Processing

1
NDE&SHM Laboratory, University of California, San Diego, 9500 Gilman Drive, La Jolla, CA 92093, USA
2
Advanced Composites and Aerospace Structures Laboratory, University of California, San Diego, 9500 Gilman Drive, La Jolla, CA 92093, USA
*
Author to whom correspondence should be addressed.
Academic Editors: Victor Giurgiutiu and Shenfang Yuan
Received: 17 May 2017 / Revised: 28 May 2017 / Accepted: 31 May 2017 / Published: 4 June 2017
(This article belongs to the Special Issue Structural Health Monitoring for Aerospace Applications 2017)
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Abstract

This paper discusses a non-destructive evaluation (NDE) technique for the detection of damage in composite aircraft structures following high energy wide area blunt impact (HEWABI) from ground service equipment (GSE), such as heavy cargo loaders and other heavy equipment. The test structures typically include skin, co-cured stringers, and C-frames that are bolt-connected onto the skin with shear ties. The inspection exploits the waveguide geometry of these structures by utilizing ultrasonic guided waves and a line scan approach. Both a contact prototype and a non-contact prototype were developed and tested on realistic test panels subjected to impact in the laboratory. The results are presented in terms of receiver operating characteristic curves that show excellent probability of detection with low false alarm rates for defects located in the panel skin and stringers. View Full-Text
Keywords: aerospace structures; ultrasonic guided waves; impact detection; NDE aerospace structures; ultrasonic guided waves; impact detection; NDE
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Capriotti, M.; Kim, H.E.; Scalea, F.L.; Kim, H. Non-Destructive Inspection of Impact Damage in Composite Aircraft Panels by Ultrasonic Guided Waves and Statistical Processing. Materials 2017, 10, 616.

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