Title :
Ultrasonic probes simultaneously producing one longitudinal and two shear waves and their potential applications
Author :
Wu, K.-T. ; Jen, C.-K. ; Kobayashi, M. ; Zhao, L.
Author_Institution :
Dept. of Electr. & Comput. Eng., McGill Univ., Montreal, QC, Canada
Abstract :
Ultrasonic probes which can simultaneously generate and receive two orthogonal polarized shear (S¿ and S//) and longitudinal (L) waves in screw shape have been presented. Thick piezoelectric films are directly fabricated onto the heads of such probes as L wave integrated ultrasonic transducers. S¿ and S// waves are obtained using mode conversion method. Application of such probes for on-line polymer injection molding process diagnostics is demonstrated.
Keywords :
injection moulding; process monitoring; thick film devices; ultrasonic measurement; ultrasonic transducers; mode conversion method; online process diagnostics; orthogonally polarised longitudinal waves; orthogonally polarised shear waves; polymer injection molding; simultaneous longitudinal-shear wave production; thick piezoelectric films; ultrasonic probe; ultrasonic transducers; Acoustic measurements; Piezoelectric films; Polarization; Polymers; Probes; Stress measurement; Thickness measurement; Ultrasonic transducers; Ultrasonic variables measurement; Velocity measurement; Ultrasonic birefringence; integrated ultrasonic longitudinal and shear wave transducer; material characterization; nondestructive testing; process diagnostics;
Conference_Titel :
Ultrasonics Symposium (IUS), 2009 IEEE International
Conference_Location :
Rome
Print_ISBN :
978-1-4244-4389-5
Electronic_ISBN :
1948-5719
DOI :
10.1109/ULTSYM.2009.5441413
