Nonlinear guided waves in plates undergoing localized microstructural changes

Vamshi Krishna Chillara, Cliff J. Lissenden

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

7 Scopus citations

Abstract

Nonlinear guided wave propagation in plates with localized micro-scale damage is investigated from a numerical standpoint. The role and interplay of three important aspects, namely damage distribution, damage intensity and its spatial extent along the direction of wave propagation on second harmonic generation of guided waves from the S0 mode at 0.5 MHz is studied. Second harmonic generation from the S0 mode (0.5 MHz) and the S1-S2 mode pair (longitudinal wave speed) is also investigated for varying degrees of micro-scale damage through the thickness. While second harmonic generation from the S0 mode was found to depend only on the volume fraction of damage through the thickness, the same for S1 mode revealed a non-monotonic response to through- thickness damage and was more due to the contribution from the surface damage in comparison to volumetric damage. Hence, it appears that second harmonic generation from the S1-S2 mode pair can be used to efficiently characterize and detect surface damage.

Original languageEnglish (US)
Title of host publication41st Annual Review of Progress in Quantitative Nondestructive Evaluation, Volume 34
EditorsDale E. Chimenti, Leonard J. Bond
PublisherAmerican Institute of Physics Inc.
Pages1561-1569
Number of pages9
ISBN (Electronic)9780735412927
DOIs
StatePublished - Jan 1 2015
Event41st Annual Review of Progress in Quantitative Nondestructive Evaluation, QNDE 2014 - Boise, United States
Duration: Jul 20 2014Jul 25 2014

Publication series

NameAIP Conference Proceedings
Volume1650
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Conference

Conference41st Annual Review of Progress in Quantitative Nondestructive Evaluation, QNDE 2014
CountryUnited States
CityBoise
Period7/20/147/25/14

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

Fingerprint Dive into the research topics of 'Nonlinear guided waves in plates undergoing localized microstructural changes'. Together they form a unique fingerprint.

Cite this