A numerical study of wave propagation excited by a Lamb wave phased array

Jung-Wuk Hong; Yunfei Qu

doi:10.1117/12.817500

30 March 2009 A numerical study of wave propagation excited by a Lamb wave phased array

Jung-Wuk Hong, Yunfei Qu

Proceedings Volume 7292, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2009; 72921Z (2009) https://doi.org/10.1117/12.817500
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2009, San Diego, California, United States

Abstract

Recent collapse of the I-35W bridge in Minneapolis on August 1, 2007 raised public concern enormously regarding the structural safety of highway bridges. However, the maintenance, which is mostly performed by visual inspection, is very expensive and labor intensive process. The structural health monitoring system has been developed to monitor the integrity of those structures effectively. Although the two-dimensional numerical simulation has been widely used for the last decade, the three-dimensional simulation is indispensable for the development of a Lamb wave phased array system. We develop a virtual Lamb wave phased array considering three-dimensional coupled numerical models of metal plates and PZT patch arrays using finite element methods. The optimized geometry and operation techniques are investigated for the focusing of Lamb waves by Lead-Zirconate-titanate (PZT) arrays.

Citation Download Citation

Jung-Wuk Hong and Yunfei Qu "A numerical study of wave propagation excited by a Lamb wave phased array", Proc. SPIE 7292, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2009, 72921Z (30 March 2009); https://doi.org/10.1117/12.817500

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