Ultrasonic nondestructive testing with time reversal mirrors
- 2 January 2003
- conference paper
- Published by Institute of Electrical and Electronics Engineers (IEEE)
- p. 809-814 vol.2
- https://doi.org/10.1109/ultsym.1992.275872
Abstract
In nondestructive testing, it is necessary to detect metallurgical defects, and the incident beam can be strongly distorted with the change of acoustical impedance created at the liquid-solid interfaces. The use of time reversal mirrors (TRMs) represents an original solution to this problem. They realize in real time a focusing process matched to the defect shape, to the propagation medium, and to the geometries of the mirror and of the medium. The TRM technique is a self-adaptive technique which compensates for any geometrical distortions of the mirror structure, as well as for distortions due to the propagation through interfaces between liquid and solid.<>Keywords
This publication has 4 references indexed in Scilit:
- Self focusing in inhomogeneous media with time reversal acoustic mirrorsPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2003
- Time reversal of ultrasonic fields. Il. Experimental resultsIEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control, 1992
- Time reversal of ultrasonic fields. I. Basic principlesIEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control, 1992
- The iterative time reversal mirror: A solution to self-focusing in the pulse echo modeThe Journal of the Acoustical Society of America, 1991