Evolution of nonlinear Rayleigh waves in a coated substrate

Won Suk Ohm, Mark F. Hamilton

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

Nonlinear Rayleigh waves propagating in a substrate coated with a thin elastic film are studied numerically. The evolution model consists of the nonlinear spectral equations of Zabolotskaya [J. Acoust. Soc. Am. 91, 2569-2575 (1992)] augmented ad hoc to include film dispersion. The dispersion relation is obtained from linear theory but is otherwise exact. Both loading and stiffening films are considered. Computations are performed for nonlinear evolution of an initially sinusoidal Rayleigh wave under three distinct dispersion regimes corresponding to different film thicknesses. The validity of the evolution model is also examined.

Original languageEnglish
Pages (from-to)2798-2806
Number of pages9
JournalJournal of the Acoustical Society of America
Volume115
Issue number6
DOIs
Publication statusPublished - 2004 Jun 1

All Science Journal Classification (ASJC) codes

  • Arts and Humanities (miscellaneous)
  • Acoustics and Ultrasonics

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