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Optical Engineering • Open Access

Review of nonlinear ultrasonic guided wave nondestructive evaluation: theory, numerics, and experiments
Author(s): Vamshi Krishna Chillara; Cliff J. Lissenden

Paper Abstract

Interest in using the higher harmonic generation of ultrasonic guided wave modes for nondestructive evaluation continues to grow tremendously as the understanding of nonlinear guided wave propagation has enabled further analysis. The combination of the attractive properties of guided waves with the attractive properties of higher harmonic generation provides a very unique potential for characterization of incipient damage, particularly in plate and shell structures. Guided waves can propagate relatively long distances, provide access to hidden structural components, have various displacement polarizations, and provide many opportunities for mode conversions due to their multimode character. Moreover, higher harmonic generation is sensitive to changing aspects of the microstructures such as to the dislocation density, precipitates, inclusions, and voids. We review the recent advances in the theory of nonlinear guided waves, as well as the numerical simulations and experiments that demonstrate their utility.

Paper Details

Date Published: 19 August 2015
PDF: 15 pages
Opt. Eng. 55(1) 011002 doi: 10.1117/1.OE.55.1.011002
Published in: Optical Engineering Volume 55, Issue 1
Show Author Affiliations
Vamshi Krishna Chillara, The Pennsylvania State Univ. (United States)
Cliff J. Lissenden, The Pennsylvania State Univ. (United States)

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