Modal preference of cumulative second harmonic generation in Lamb waves

Y. Liu, J. Y. Kim, L. J. Jacobs, J. Qu, Z. Li

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

4 Scopus citations

Abstract

This research experimentally investigates the symmetry properties of the second harmonic Lamb wave. One anti-symmetric Lamé mode pair (a2-a4) and one symmetric mode pair (s1-s2) are evaluated under the same experimental conditions. The wedge method is used to generate and detect a specific Lamb wave mode and the Morlet wavelet is employed to extract amplitudes of the fundamental and second harmonics. The results show that only symmetric second harmonic Lamb modes can cumulatively grow with propagation distance.

Original languageEnglish
Title of host publicationReview of Progress in Quantitative Nondestructive Evaluation
Pages277-283
Number of pages7
Edition31
DOIs
StatePublished - 2012
Event38th Annual Review of Progress in Quantitative Nondestructive Evaluation, QNDE - Burlington, VT, United States
Duration: 17 Jul 201122 Jul 2011

Publication series

NameAIP Conference Proceedings
Number31
Volume1430
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Conference

Conference38th Annual Review of Progress in Quantitative Nondestructive Evaluation, QNDE
Country/TerritoryUnited States
CityBurlington, VT
Period17/07/1122/07/11

Keywords

  • Lamb Wave
  • Lamé Mode
  • Nonlinear Acoustics
  • Second Harmonic Generation

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