TITLE

The time reversed elastic nonlinearity diagnostic applied to evaluation of diffusion bonds

AUTHOR(S)
Ulrich, T. J.; Sutin, Alexander M.; Claytor, Thomas; Papin, Pallas; Le Bas, Pierre-Yves; TenCate, James A.
PUB. DATE
October 2008
SOURCE
Applied Physics Letters;10/13/2008, Vol. 93 Issue 15, p151914
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
With the recent application of time reversed acoustics and nonlinear elasticity to imaging mechanical damage, the development of time reversal based nondestructive evaluation techniques has begun. Here, diffusion bonded metal disks containing intentionally disbonded regions are analyzed using the time reversed elastic nonlinearity diagnostic. The nonlinear results are compared with linear ultrasonic imaging (C scan). Scanning electron microscopy is shown to illustrate the differences between the features seen by the linear and nonlinear methods.
ACCESSION #
34984694

 

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