Keywords

time reversal, acoustics, history, applications, elastic waves

Abstract

This article provides an historical overview of Time Reversal (TR), introduces its basic physics, addresses advantages and limitations, and describes some applications of this very active research area of acoustics. In the Geophysics Group at the Los Alamos National Laboratory, we conduct studies of TR of elastic waves in solids. Our work includes application of TR to nondestructive evaluation of materials, as well as to earthquake source characterization, and ground-based nuclear explosion monitoring. We emphasize the term elastic waves here to underscore that we include both compression and shear waves, in contrast to purely acoustic waves that are only compressional.

Document Type

Peer-Reviewed Article

Publication Date

2008-01-01

Permanent URL

http://hdl.lib.byu.edu/1877/2177

Publisher

Acoustical Society of America

Source

B. E. Anderson, M. Griffa, C. Larmat, T. J. Ulrich, and P. A. Johnson, "Time Reversal," Acoust. Today, 4, 5-16 (28).

Language

English

College

Physical and Mathematical Sciences

Department

Physics and Astronomy