|Auteur(s):||Fink, Prada, Cassereau and Kerbrat
|Titre:||Time Reversal Techniques in Non Destructive Testing
|Référence:||European Congress of Acoustics, 2002
|Type de publication:||Communication invitée à un congrès avec actes
|Soumis en Juin 2002|
The objective of this paper is to show that time-reversal invariance can be exploited in acoustics to create a variety of new methods in non-destructive testing. Two different approaches will be discussed. The first one is the iterative time reversal process. It is an adaptive technique that can be used to detect flaws in complex samples with arrays of transducers. A second technique will also be presented: the D.O.R.T. method (French acronym for Decomposition of the Time Reversal Operator). It is a detection technique that is derived from the mathematical analysis of the iterative time reversal process and It allows the simultaneous detection and separation of several defects.
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