Design of electro-acoustic Tonpilz transducer for underwater SONAR applications with Finite Element Method

This study aims to design and fabricate an acoustic transducer whose first resonance frequency occurs within the ۱۱ kHz range. The transducer can be used as an underwater warning pinger (locator) for emergency situations. When installed on an aircraft, vessel, or piece of equipment, and activated by a pressure sensor, this pinger can serve as a warning device. The core of the transducer is a piezoelectric (PZT-۴) ring. By adding a concentric cylindrical metal shell around the ring, we aim to both increase the structural degrees of freedom and align the emitted acoustic wave with the normal vector perpendicular to the outer surface of the ring. The ring is made of piezoceramic material, while the surrounding concentric metal shell is made of aluminum. Since the computational analysis of such structures using simulation software is highly time-consuming, a sector of the structure is analyzed instead of the full model, as the results are identical to those obtained from the complete geometry. The obtained results show excellent agreement.

کلیدواژه ها:

Tonpilz ، transducer ، FEM