Nonlinear guided waves for continuous material microstructure state awareness

Cliff J. Lissenden, Yang Liu, Vamshi K. Chillara, Gloria Choi, Xiaochu Yao

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Scopus citations

Abstract

This paper summarizes the characteristics of nonlinear ultrasonic guided waves and demonstrates the use of the nondispersive fundamental shear horizontal wave mode to generate a third harmonic that is sensitive to plastic strain and fatigue. Experimental results for an aluminum alloy plate are presented within the context of the current understanding of nonlinear guided waves. Due to the sensitive nature of higher harmonic measurements, instrumentation nonlinearities are discussed. In two different sets of experiments, the third harmonic generation is shown to be dependent upon (i) the plastic strain and (ii) the number of fatigue cycles. Thus, higher harmonic generation can provide material state awareness throughout the service life, especially before a macroscale crack initiates.

Original languageEnglish (US)
Title of host publicationVibration, Acoustics and Wave Propagation
PublisherAmerican Society of Mechanical Engineers (ASME)
ISBN (Electronic)9780791849620
DOIs
StatePublished - Jan 1 2014
EventASME 2014 International Mechanical Engineering Congress and Exposition, IMECE 2014 - Montreal, Canada
Duration: Nov 14 2014Nov 20 2014

Publication series

NameASME International Mechanical Engineering Congress and Exposition, Proceedings (IMECE)
Volume13

Other

OtherASME 2014 International Mechanical Engineering Congress and Exposition, IMECE 2014
CountryCanada
CityMontreal
Period11/14/1411/20/14

All Science Journal Classification (ASJC) codes

  • Mechanical Engineering

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  • Cite this

    Lissenden, C. J., Liu, Y., Chillara, V. K., Choi, G., & Yao, X. (2014). Nonlinear guided waves for continuous material microstructure state awareness. In Vibration, Acoustics and Wave Propagation (ASME International Mechanical Engineering Congress and Exposition, Proceedings (IMECE); Vol. 13). American Society of Mechanical Engineers (ASME). https://doi.org/10.1115/IMECE2014-39699