Rapid non-contact inspection of composite ailerons using air-coupled ultrasound

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Abstract

This paper demonstrates an approach for rapid non-contact air-coupled ultrasonic inspection of composite ailerons with complex cross-sectional profile including thickness changes, curvature and the presence of a number of stiffeners. Low-frequency plate guided ultrasonic modes are used in B-scan mode for the measurements in pitch-catch mode. Appropriate probe holder angles suitable for generating and receiving lower order guided wave modes are discussed. Different embodiments of the pitch-catch tandem positions along and across stiffener and curved regions of the test sample enable a rapid test campaign capturing the feature-rich sample profile. Techniques to distinguish special features in the stiffener are presented.

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APA

Panda, R. S., Karpenko, O., Udpa, L., Haq, M., Rajagopal, P., & Balasubramaniam, K. (2016). Rapid non-contact inspection of composite ailerons using air-coupled ultrasound. In AIP Conference Proceedings (Vol. 1706). American Institute of Physics Inc. https://doi.org/10.1063/1.4940534

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