3 April 2018 Integration of AE, GUWs, and EMI (Conference Presentation)
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Abstract
In this paper, an integrated nondestructive evaluation / structural health monitoring (NDE / SHM) system based on the use of acoustic emission (AE), electromechanical impedance (EMI) and guided ultrasonic waves (GUWs) is presented. The system is integrated into a single hardware/software unit and is driven by a few graphical user interfaces created in the laboratory. The feasibility of this multi-modal monitoring approach is assessed by monitoring an aluminum plate with an array of six wafer-type piezoelectric transducers. AE events are generated with the pencil-lead break technique whereas damage is simulated in the form of permanent magnets attached to the plate. The waveforms associated with the AE are processed using a source localization approach, whereas the GUWs and EMI data are processed using simple metrics based on cross-correlation. The results presented here show that the proposed system is robust and the three NDT methods complement each other very well.
Conference Presentation
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Piervincenzo Rizzo, Wen Deng, and Amir Nasrollahi "Integration of AE, GUWs, and EMI (Conference Presentation)", Proc. SPIE 10600, Health Monitoring of Structural and Biological Systems XII, 106002L (3 April 2018); doi: 10.1117/12.2296429; https://doi.org/10.1117/12.2296429
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