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Title: Depth profile of a time-reversal focus in an elastic solid

Journal Article · · Ultrasonics
 [1];  [1];  [1];  [1];  [2]
  1. Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
  2. Aix Marseille Univ., Marseille (France)

The out-of-plane velocity component is focused on the flat surface of an isotropic solid sample using the principle of time reversal. This experiment is often reproduced in the context of nondestructive testing for imaging features near the surface of the sample. However, it is not clear how deep the focus extends into the bulk of the sample and what its profile is. In this paper, this question is answered using both numerical simulations and experimental data. The profiles of the foci are expressed in terms of the wavelengths of the dominant waves, based on the interpretation of the Lamb’s problem and the use of the diffraction limit.

Research Organization:
Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
AC52-06NA25396
OSTI ID:
1193443
Report Number(s):
LA-UR-14-29461; PII: S0041624X14003497
Journal Information:
Ultrasonics, Vol. 58, Issue C; ISSN 0041-624X
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 4 works
Citation information provided by
Web of Science

References (20)

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The time reversed elastic nonlinearity diagnostic applied to evaluation of diffusion bonds journal October 2008
Time reversal and non-linear elastic wave spectroscopy (TR NEWS) techniques journal April 2008
A new nonlinear elastic time reversal acoustic method for the identification and localisation of stress corrosion cracking in welded plate-like structures – A simulation study journal June 2007
A two-dimensional pseudospectral model for time reversal and nonlinear elastic wave spectroscopy journal December 2007
Probing material nonlinearity at various depths by time reversal mirrors journal April 2014
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Time reversal of ultrasonic fields. I. Basic principles journal September 1992
Reproducibility of signal transmissions in the ocean journal January 1965
One-channel time-reversal in chaotic cavities: Experimental results journal February 1999
Single-channel time reversal in elastic solids journal November 2004
Time-reversal of ultrasonic fields. III. Theory of the closed time-reversal cavity journal September 1992
Robust Acoustic Time Reversal with High-Order Multiple Scattering journal December 1995
One-channel time-reversal in chaotic cavities: Theoretical limits journal February 1999
On the use of a chaotic cavity transducer in nonlinear elastic imaging journal October 2009
Theory of the time-reversal process in solids journal September 1997
Acoustic time reversal with mode conversion at a solid-fluid interface journal March 1998
Three component time reversal: Focusing vector components using a scalar source journal December 2009
Dual energy time reversed elastic wave propagation and nonlinear signal processing for localisation and depth-profiling of near-surface defects: A simulation study journal December 2011
A guided wave technique for the characterization of highly attenuative viscoelastic materials journal July 2003

Cited By (1)

Time Reversal Techniques book October 2018

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