Behavior of thin lightweight structures under propagating waves

Eric A. Petersen; Katherine A Barnes; Umesh A. Korde

doi:10.1117/12.771251

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18 April 2008 Behavior of thin lightweight structures under propagating waves

Eric A. Petersen, Katherine A Barnes, Umesh A. Korde

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Proceedings Volume 6928, Active and Passive Smart Structures and Integrated Systems 2008; 692826 (2008) https://doi.org/10.1117/12.771251
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2008, San Diego, California, United States

Abstract

In this study, we examine the propagation of mechanical waves on thin lightweight structures, with the aim of developing a method of crack detection in such structures. By comparing the response of healthy and cracked samples, we are sometimes able to differentiate between the two. Using a network of sensors it would be possible to determine the presence of a crack on a structure that is remote. Experimental work has been performed with single-crystal Silicon thin plates and a thin rectangular sheet of steel. The Silicon plates were tested healthy and cracked, and the steel was only tested when healthy. Piezo-ceramic stacks were used to provide actuation and sensing, and wave solutions to the equation of motion are obtained for the Silicon plate. Calculated and experimental results agree reasonably well.

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Eric A. Petersen, Katherine A Barnes, and Umesh A. Korde "Behavior of thin lightweight structures under propagating waves", Proc. SPIE 6928, Active and Passive Smart Structures and Integrated Systems 2008, 692826 (18 April 2008); https://doi.org/10.1117/12.771251

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