Pitch-Catch Air-Coupled Ultrasonic Technique for Detection of Barely Visible Impact Damages in Composite Laminates

Lukasz Ambrozinski 1 Bogdan Piwakowski 2 Tadeusz Stepinski 1 Lukasz Pieczonka 1 Tadeusz Uhl 1
1 AGH University of Science and Technology [Pologne]
2 Ecole Centrale de Lille
Abstract : In this paper we demonstrate an application of Lamb waves, evoked and sensed using air-coupled transducers, with the aim to detect barely visible impact damages (BVID). Experimental results, performed using a pair of air-coupled transducers operating in pitch-catch setup, are presented. In this setup, selective excitation and reception of selected Lamb wave modes is possible by changing transducers' angle of incidence. Results of scanning of a carbon-fiber reinforced polymer (CFRP) panel using S0 Lamb wave mode are presented in the paper, and different damage detection strategies are analyzed to detect impact damages in the panel.
Keywords : Damage assessment Ultrasonic for (seismic acoustic) methods Guided waves
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Communication dans un congrès
Le Cam, Vincent and Mevel, Laurent and Schoefs, Franck. EWSHM - 7th European Workshop on Structural Health Monitoring, Jul 2014, Nantes, France. 2014
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Lukasz Ambrozinski, Bogdan Piwakowski, Tadeusz Stepinski, Lukasz Pieczonka, Tadeusz Uhl. Pitch-Catch Air-Coupled Ultrasonic Technique for Detection of Barely Visible Impact Damages in Composite Laminates. Le Cam, Vincent and Mevel, Laurent and Schoefs, Franck. EWSHM - 7th European Workshop on Structural Health Monitoring, Jul 2014, Nantes, France. 2014. 〈hal-01022043〉

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