Title :
The use of Pulse Compression and Frequency Modulated Continuous Wave to improve Ultrasonic Non Destructive Evaluation of highly-scattering materials
Author :
Battaglini, L. ; Laureti, S. ; Ricci, Marco ; Burrascano, Pietro ; Davis, L.A.J. ; Hutchins, D.A.
Author_Institution :
Dept. Of Eng., Univ. of Perugia, Terni, Italy
Abstract :
Different approaches have been investigated for the transmission of signals through highly attenuating and scattering materials. Chirp signals are sent through the material, and then processed using either time-multiplication or cross-correlation with a template to obtain information concerning the sample. The use of both narrow bandwidth piezoelectric transducers and wide bandwidth piezocomposites is also discussed.
Keywords :
acoustic signal processing; composite materials; piezoelectric materials; piezoelectric transducers; pulse compression; ultrasonic materials testing; ultrasonic scattering; ultrasonic transducers; ultrasonic transmission; chirp signals; cross-correlation; frequency modulated continuous wave; highly attenuating materials; highly-scattering materials; narrow bandwidth piezoelectric transducers; pulse compression; signals transmission; time-multiplication; ultrasonic nondestructive evaluation; wide bandwidth piezocomposites; Acoustics; Aggregates; Chirp; Concrete; Scattering; Signal to noise ratio; FMCW; pulse-compression; scattering;
Conference_Titel :
Ultrasonics Symposium (IUS), 2014 IEEE International
Conference_Location :
Chicago, IL
DOI :
10.1109/ULTSYM.2014.0482
