DocumentCode
3458552
Title
Attenuation measurement and flaw detection in graphite epoxy composites with random phase transducers
Author
Soufflet, C. ; Fink, M.
Author_Institution
Groupe de Phys. des Solides, Paris VII Univ., France
fYear
1988
fDate
2-5 Oct 1988
Firstpage
1035
Abstract
Random phase transducers were used to measure the attenuation of graphite epoxy composites of different porosity. It is shown that the random phase transducer allows attenuation estimation from the speckle noise coming from the sample volume. This technique is compared with the spatial compounding technique. Flaw detection is also performed with random phase transducers, and it is shown that specular reflector echoes are enhanced, compared with scattering noise, with this type of transducer
Keywords
attenuation measurement; composite materials; flaw detection; graphite; ultrasonic materials testing; ultrasonic measurement; ultrasonic transducers; attenuation measurement; flaw detection; graphite epoxy composites; porosity; random phase transducers; scattering noise; spatial compounding; speckle noise; specular reflector echoes; ultrasound; Acoustic transducers; Attenuation measurement; Envelope detectors; Face detection; Phase detection; Phase noise; Piezoelectric transducers; Scattering; Speckle; Ultrasonic transducers;
fLanguage
English
Publisher
ieee
Conference_Titel
Ultrasonics Symposium, 1988. Proceedings., IEEE 1988
Conference_Location
Chicago, IL
Type
conf
DOI
10.1109/ULTSYM.1988.49535
Filename
49535
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