Coda-Wave Interferometry in Finite Solids: Recovery of [Formula presented]-to-[Formula presented] Conversion Rates in an Elastodynamic Billiard

Oleg I. Lobkis, Richard L. Weaver

Research output: Contribution to journalArticlepeer-review

Abstract

We study the temperature dependence of diffuse reverberant ultrasound in elastic bodies. Transient wave forms are found to undergo an almost pure dilation of 0.0277% per degree, related to the temperature dependence of wave speeds. The wave forms also suffer a distortion that, we argue, depends on the rate of conversion between the dilatational ([Formula presented]) and shear ([Formula presented]) waves. Distortion is found to scale in a manner consistent with theoretical arguments but also appears to be a function of the degree of ray chaos in the body, indicating that the mixing rates are slower in more regular bodies.

Original languageEnglish (US)
Number of pages1
JournalPhysical review letters
Volume90
Issue number25
DOIs
StatePublished - Jan 1 2003

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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