Experimental validation of analytical model for Lamb wave interaction with geometric discontinuity

Banibrata Poddar; Victor Giurgiutiu

doi:10.1117/12.2084298

1 April 2015 Experimental validation of analytical model for Lamb wave interaction with geometric discontinuity

Banibrata Poddar, Victor Giurgiutiu

Proceedings Volume 9437, Structural Health Monitoring and Inspection of Advanced Materials, Aerospace, and Civil Infrastructure 2015; 94371Y (2015) https://doi.org/10.1117/12.2084298
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2015, San Diego, California, United States

Abstract

Non-destructive testing methods based on ultrasonic waves are one of the most popular methods for damage detection in structures. Of these ultrasonic waves Lamb waves are of particular interest for the inspection of large structures for various reasons. Therefore scattering of Lamb waves from flaws has generated a considerable amount of research over last couple of decades. Most of the work has been done using computational tools like Finite Element Methods and experimental technique. In this paper an analytical approach is presented to develop a fundamental understanding of the scattering of Lamb waves from geometric discontinuities in 2 dimensions. We have considered simplest of all geometric discontinuity – a step, as this fundamental understanding can easily be extended to corrosion or crack.

Citation Download Citation

Banibrata Poddar and Victor Giurgiutiu "Experimental validation of analytical model for Lamb wave interaction with geometric discontinuity", Proc. SPIE 9437, Structural Health Monitoring and Inspection of Advanced Materials, Aerospace, and Civil Infrastructure 2015, 94371Y (1 April 2015); https://doi.org/10.1117/12.2084298

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