DocumentCode
338078
Title
Compression and decompression of ultrasonic echoes by means of parametric wave phase conjugation
Author
Preobrazhensky, V. ; Pernod, Philippe
Volume
1
fYear
1998
fDate
1998
Firstpage
889
Abstract
The properties of magnetoacoustic Parametric Wave Phase Conjugation (WPC) in presence of multiscatterers and conditions of double pulse pumping are studied for the first time. The analyse of the temporal behaviour of the time reversed echoes from complex scatterers in several iterations of WPC process shows that specific phenomena of compression and decompression of ultrasonic scattered signals can arise. The results are of interest for non destructive testing applications
Keywords
acoustic signal processing; echo; magnetoacoustic effects; nonlinear acoustics; ultrasonic materials testing; ultrasonic scattering; compression; decompression; double pulse pumping; magnetoacoustic parametric wave phase conjugation; multiscatterer; nondestructive testing; ultrasonic echo; ultrasonic scattering; Acoustic pulses; Acoustic reflection; Acoustic scattering; Acoustic testing; Acoustic transducers; Electromagnetic scattering; Magnetic properties; Optical wavelength conversion; Visualization; Wires;
fLanguage
English
Publisher
ieee
Conference_Titel
Ultrasonics Symposium, 1998. Proceedings., 1998 IEEE
Conference_Location
Sendai
ISSN
1051-0117
Print_ISBN
0-7803-4095-7
Type
conf
DOI
10.1109/ULTSYM.1998.762286
Filename
762286
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