Evaluation of plasticity driven material damage using Lamb waves

Christoph Pruell, Jin Yeon Kim, Jianmin Qu, Laurence J. Jacobs

Research output: Contribution to journalArticlepeer-review

176 Scopus citations

Abstract

This letter reports on the experimental observation of a direct correlation between the acoustic nonlinearity measured with Lamb waves and the level of plasticity in a metal specimen. This correlation implies that even though Lamb waves are multimodal and dispersive, they will interact with a material's plasticity in a manner similar to longitudinal and Rayleigh waves; there is a fundamental relationship between material plasticity and acoustic nonlinearity that is independent of wave type. As a result, Lamb waves can be used to quantitatively assess plasticity driven material damage using established higher harmonic generation techniques.

Original languageEnglish
Article number231911
JournalApplied Physics Letters
Volume91
Issue number23
DOIs
StatePublished - 2007

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