19 August 2015 Review of nonlinear ultrasonic guided wave nondestructive evaluation: theory, numerics, and experiments
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Optical Engineering, 55(1), 011002 (2015). doi:10.1117/1.OE.55.1.011002
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.
Chillara and Lissenden: Review of nonlinear ultrasonic guided wave nondestructive evaluation: theory, numerics, and experiments
Vamshi Krishna Chillara, Cliff J. Lissenden, "Review of nonlinear ultrasonic guided wave nondestructive evaluation: theory, numerics, and experiments," Optical Engineering 55(1), 011002 (19 August 2015). http://dx.doi.org/10.1117/1.OE.55.1.011002
JOURNAL ARTICLE
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KEYWORDS
Waveguides

Wave propagation

Second-harmonic generation

Ultrasonics

Transducers

Harmonic generation

Nondestructive evaluation

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