Title :
Recent development in the application of 0-3 piezoelectric composites for hydrophone arrays
Author :
Ting, Robert Y. ; Geil, Fred G.
Author_Institution :
US Naval Res. Lab., Orlando, FL, USA
Abstract :
Piezoelectric composites of the 0-3 type were considered as alternatives to thick-film polyvinylidene fluoride (PVDF) for application in the development of large-area hydrophones. Small hydrophone arrays were fabricated and their acoustical performance was determined. In addition to a constant free-field voltage sensitivity over a broad frequency range, a near-zero level of acoustic contamination due to interelement coupling was also demonstrated, as indicated by the measured directivity patterns and relative phase responses. The test results are compared with those of similar PVDF arrays, and the merit of material selection is discussed
Keywords :
composite materials; hydrophones; piezoelectric materials; piezoelectric transducers; 0-3 piezoelectric composites; acoustic contamination; acoustical performance; constant free-field voltage sensitivity; directivity patterns; hydrophone arrays; interelement coupling; large-area hydrophones; near-zero level; relative phase responses; Acoustic measurements; Acoustic testing; Ceramics; Frequency measurement; Laboratories; Materials testing; Sensor arrays; Sonar equipment; Transmission line matrix methods; Voltage;
Conference_Titel :
Applications of Ferroelectrics, 1990., IEEE 7th International Symposium on
Conference_Location :
Urbana-Champaign, IL
Print_ISBN :
0-7803-0190-0
DOI :
10.1109/ISAF.1990.200189
