HYDROPHONE BENDER CRYSTAL ASSEMBLY

摘要

A bender crystal assembly (30) is disclosed for mounting in a hydrophone housing to produce electrical signals in response to acoustic pressure changes in a body of water. The assembly comprises a disc-shaped mounting plate (12a) for mounting in the hydrophone housing to be bent by differential water pressure across the plate. A thin disc (14a) of piezoelectric crystal is bonded to the mounting plate by a layer (16a) of conductive adhesive to bend with the mounting plate. A reinforcing plate (32) is bonded to the side of the crystal opposite from the mounting plate by a layer (34) of conductive adhesive to increase the section moment of inertia and the depth of water in which the crystal assembly can operate.