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

fYear

2009

fDate

20-23 Sept. 2009

Firstpage

629

Lastpage

632

Abstract

Ultrasonic probes which can simultaneously generate and receive two orthogonal polarized shear (S_Â¿ 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_Â¿ 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;

fLanguage

English

Publisher

ieee

Conference_Titel

Ultrasonics Symposium (IUS), 2009 IEEE International

Conference_Location

Rome

ISSN

1948-5719

Print_ISBN

978-1-4244-4389-5

Electronic_ISBN

1948-5719

Type

conf

DOI

10.1109/ULTSYM.2009.5441413

Filename

5441413