TITLE

Acoustic time reversal experiments in nonlinear regime

AUTHOR(S)
Tanter, Mickae¨l; Thomas, Jean-Louis; Coulouvrat, Franc¸ois; Fink, Mathias
PUB. DATE
July 2000
SOURCE
AIP Conference Proceedings;2000, Vol. 524 Issue 1, p137
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
The behaviour of Time Reversal Mirrors is investigated in a higher power regime, with nonlinearities taken into account. In a weakly nonlinear medium, the time reversal invariance holds as long as the shock distance is not reached, otherwise the shock discontinuity implies an irreversible change of the entropy and the invariance is broken. Experiments have been conducted that confirm these results and give good qualitative agreement with finite-differences simulations of Burgers equation.
ACCESSION #
5665314

 

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