7D-2 3D PSTD Simulations of NEWS-TR and TR-NEWS Methods: Application to Nonclassical Nonlinearity Ultrasonic Imaging

Author

Goursolle, Thomas ; Santos, Serge Dos ; Callé, Samuel ; Matar-Lacaze, Olivier Bou

fYear

2007

fDate

28-31 Oct. 2007

Firstpage

585

Lastpage

588

Abstract

Nonlinear elastic wave spectroscopy with pretreatment and post-treatment of time reversal, called NEWS-TR and TR-NEWS, respectively, have been investigated numerically in this work. Ultrasonic Imaging of a localized 3D damaged region, modeled by a nonclassical nonlinear behavior has been demonstrated. With NEWS-TR localization is performed with a rebroadcast of the nonlinear signature after TR signal processing. Chirp-coded excitation has also been introduced as an alternative for excitation. With TR-NEWS, 3D reciprocity has been numerically demonstrated and nonlinear ultrasonic imaging is performed with classical NEWS analysis after local focusing of ultrasound generated by TR tool.

Keywords

elastic waves; spectroscopy; ultrasonic imaging; 3D PSTD simulations; 3D damaged region; chirp-coded excitation; nonclassical nonlinearity ultrasonic imaging; nonlinear elastic wave spectroscopy; psudeospectral time domain algorithm; signal processing; time reversal; Chirp; Filtering; Focusing; Hysteresis; Image analysis; Power harmonic filters; Solid modeling; Spectroscopy; Stress; Ultrasonic imaging;

fLanguage

English

Publisher

ieee

Conference_Titel

Ultrasonics Symposium, 2007. IEEE

Conference_Location

New York, NY

ISSN

1051-0117

Print_ISBN

978-1-4244-1384-3

Electronic_ISBN

1051-0117

Type

conf

DOI

10.1109/ULTSYM.2007.152

Filename

4409725