Title :
Propagation of ultrasound along fibres for the non-destructive testing of plates
Author :
Atkinson, D. ; Hayward, G. ; Cochran, A.
Author_Institution :
Dept. of Electron. & Electr. Eng., Strathclyde Univ., Glasgow, UK
Abstract :
This paper presents results of a theoretical and experimental programme to investigate the propagation of ultrasound along fibres for the generation and detection of Lamb waves. Furthermore, the feasibility of a fully embedded system will be discussed. Ultrasonic energy is introduced to the fibres from a piezoceramic block via an epoxy bond. A finite element analysis of the ultrasonic coupling shows that, as a result of the epoxy bond acting as a mode converter, the lateral modes of the piezoceramic transducer are coupled into the fibre more efficiently than the thickness mode. This is confirmed experimentally
Keywords :
fibres; finite element analysis; piezoceramics; piezoelectric transducers; surface acoustic waves; ultrasonic materials testing; ultrasonic propagation; Lamb waves; US propagation; epoxy bond; fibres; finite element analysis; fully embedded system; mode converter; nondestructive testing; piezoceramic block; piezoceramic transducer; plates; ultrasonic coupling; ultrasonic energy; ultrasound; Bonding; Equations; Frequency; Nondestructive testing; Optical fiber sensors; Optical fiber testing; Optical fiber theory; Optical waveguides; Piezoelectric materials; Ultrasonic imaging;
Conference_Titel :
Ultrasonics Symposium, 1997. Proceedings., 1997 IEEE
Conference_Location :
Toronto, Ont.
Print_ISBN :
0-7803-4153-8
DOI :
10.1109/ULTSYM.1997.663134
