期刊名称：International Journal of Innovative Research in Science, Engineering and Technology
印刷版ISSN：2347-6710
电子版ISSN：2319-8753
出版年度：2015
期号：MULTICON
页码：1237
出版社：S&S Publications
摘要：A Sonobuoy is an expendable sonar system that is dropped/ejected from aircraft or shipsconducting anti-submarine warfare or underwater acoustic research. The hydrophones play an important role inSonobuoys by listening or recording the acoustical sound. Hydrophones are based on the piezoelectric transducer whichgenerates electricity when subjected to the pressure change. The existing hydrophones use Lead Zirconate Titanate(PZT) as piezoceramic materials for transducer. PZT hydrophones are used in the applications of Sonobuoys and someunder water vehicles. This project reveals about the Polyvinylidene Fluoride (PVDF) hydrophones. Compared withPZT ceramics, the low density and high compliance of the PVDF films make them a more suitable choice in modaltesting, especially for detecting high-frequency modes in flexible or inflatable structures. The synthesis of PZT andPVDF thin films are mentioned. PZT can be synthesized by hydrothermal method and Sol-Gel process and PVDF canbe synthesis from roll hot press method. PVDF hydrophones sense only high frequencies. In order to sense both lowand high frequencies one face of metal plate is fixed with PZT and other face is fixed with PVDF.
关键词：Sonobuoy; Hydrophones; Lead Zirconate Titanate (PZT); Polyvinylidene Fluoride (PVDF); Sol-gel;process; Roll hot press machine
