Robust diagnosis for the focal stability in time‐reversal acoustics

2000 ◽  
Vol 108 (5) ◽  
pp. 2606-2606
Author(s):  
H. C. Song ◽  
W. A. Kuperman ◽  
T. Akal ◽  
W. S. Hodgkiss ◽  
S. Kim ◽  
...  
Keyword(s):  
Time Reversal ◽  
Time Reversal Acoustics

scholarly journals Pressure sensitivity kernels applied to time-reversal acoustics

2008 ◽  
Vol 124 (1) ◽  
pp. 98-112 ◽  
Author(s):  
Kaustubha Raghukumar ◽  
Bruce D. Cornuelle ◽  
William S. Hodgkiss ◽  
William A. Kuperman
Keyword(s):  
Time Reversal ◽  
Pressure Sensitivity ◽  
Time Reversal Acoustics

Flexible tools for time reversal acoustics focusing applications

2007 ◽  
Vol 122 (5) ◽  
pp. 3009
Author(s):  
Laurent Fillinger ◽  
Viktors Kurtenoks ◽  
Sam Rosenblum ◽  
Alexander Sutin ◽  
Armen Sarvazyan
Keyword(s):  
Time Reversal ◽  
Time Reversal Acoustics

Damage detection in composites using the time‐reversal acoustics method

2004 ◽  
Vol 116 (4) ◽  
pp. 2567-2567 ◽  
Author(s):  
Alexander Sutin ◽  
Eric Roides ◽  
Armen Sarvazyan
Keyword(s):  
Damage Detection ◽  
Time Reversal ◽  
Time Reversal Acoustics

Selective source reduction to identify masked sources using time reversal acoustics

2008 ◽  
Vol 41 (15) ◽  
pp. 155504 ◽  
Author(s):  
M Scalerandi ◽  
A S Gliozzi ◽  
Brian E Anderson ◽  
M Griffa ◽  
Paul A Johnson ◽  
...  
Keyword(s):  
Time Reversal ◽  
Source Reduction ◽  
Time Reversal Acoustics

scholarly journals A single-sided homogeneous Green's function representation for holographic imaging, inverse scattering, time-reversal acoustics and interferometric Green's function retrieval

2016 ◽  
Vol 205 (1) ◽  
pp. 531-535 ◽  
Author(s):  
Kees Wapenaar ◽  
Jan Thorbecke ◽  
Joost van der Neut
Keyword(s):  
Green’S Function ◽  
Inverse Scattering ◽  
Green's Function ◽  
Time Reversal ◽  
Boundary Integral ◽  
Open Surface ◽  
Function Representation ◽  
Holographic Imaging ◽  
Scattering Time ◽  
Time Reversal Acoustics

Abstract Green's theorem plays a fundamental role in a diverse range of wavefield imaging applications, such as holographic imaging, inverse scattering, time-reversal acoustics and interferometric Green's function retrieval. In many of those applications, the homogeneous Green's function (i.e. the Green's function of the wave equation without a singularity on the right-hand side) is represented by a closed boundary integral. In practical applications, sources and/or receivers are usually present only on an open surface, which implies that a significant part of the closed boundary integral is by necessity ignored. Here we derive a homogeneous Green's function representation for the common situation that sources and/or receivers are present on an open surface only. We modify the integrand in such a way that it vanishes on the part of the boundary where no sources and receivers are present. As a consequence, the remaining integral along the open surface is an accurate single-sided representation of the homogeneous Green's function. This single-sided representation accounts for all orders of multiple scattering. The new representation significantly improves the aforementioned wavefield imaging applications, particularly in situations where the first-order scattering approximation breaks down.

Acoustic communications in an enclosure using single-channel time-reversal acoustics

2002 ◽  
Vol 80 (4) ◽  
pp. 694-696 ◽  
Author(s):  
M. G. Heinemann ◽  
A. Larraza ◽  
K. B. Smith
Keyword(s):  
Time Reversal ◽  
Single Channel ◽  
Acoustic Communications ◽  
Time Reversal Acoustics

Ultrasound focusing to a predefined area using principles of time reversal acoustics.

2011 ◽  
Vol 129 (4) ◽  
pp. 2531-2531
Author(s):  
Alexander Sutin ◽  
Yegor Sinelnikov ◽  
Gaurav Gandhi ◽  
Natalya Rapoport ◽  
Armen Sarvazyan
Keyword(s):  
Time Reversal ◽  
Time Reversal Acoustics
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