Title :
Evaluation of laser probe performances for measuring cross-coupling in 1-3 piezocomposite arrays
Author :
Certon, Dominique ; Felix, Nicolas ; Hue, Louis Pascal Tran Huu ; Patat, Frédéric ; Lethiecq, Marc
Author_Institution :
GIP Ultrasons, Tours, France
Abstract :
This paper deals with cross-coupling in 1-3 piezocomposite arrays. Four array configurations are tested. Measurements of surface displacement are performed with a laser interferometer. Experimental results are given with several graphic representation in order to interpret them in terms of cross-coupling mechanisms:temporal displacement profile, time/space and frequency/space cartographies of displacements and dispersion curves of Lamb waves in piezocomposite arrays. Effects of the fluid medium on each of these characteristics are discussed. Effective width of the excited element is determined and all plate modes involved in the mechanical coupling are identified and referenced
Keywords :
measurement by laser beam; piezoelectric transducers; probes; surface acoustic wave transducers; ultrasonic transducer arrays; 1-3 piezocomposite arrays; Lamb waves; array configurations; cross-coupling; dispersion curves; fluid medium; frequency/space cartographies; laser interferometer; laser probe performance; mechanical coupling; plate modes; surface displacement; temporal displacement profile; time/space cartographies; Displacement measurement; Electric variables measurement; Frequency; Graphics; Laser modes; Mechanical variables measurement; Optical arrays; Performance evaluation; Probes; Ultrasonic variables measurement;
Conference_Titel :
Ultrasonics Symposium, 1999. Proceedings. 1999 IEEE
Conference_Location :
Caesars Tahoe, NV
Print_ISBN :
0-7803-5722-1
DOI :
10.1109/ULTSYM.1999.849189
