Controlling depoling and aging of piezoelectric transducers

Details Controlling depoling and aging of piezoelectric transducers Controlling depoling and aging of piezoelectric transducers

1994-05-31

1997-07-01

Kastler, Scott

Specialized metallurgical processes, compositions for use therei

Processes

Producing solid particulate free metal directly from liquid...

222590, 222593, 266239, B22D 3900

Patent

active

056433530

ABSTRACT:
Depoling and aging of a piezoelectric transducers used at elevated temperatures is controlled by poling the transducer, applying a bias voltage in the same direction as the transducer is poled to maintain the piezoelectric transducer at an elevated potential, and applying a drive voltage having a lesser magnitude than the bias voltage to induce elastic strain in the transducer.

REFERENCES:
patent: 3833163 (1974-09-01), Denslow et al.
patent: 4828886 (1989-05-01), Heiber
patent: 5229016 (1993-07-01), Hayes et al.
patent: 5377902 (1995-01-01), Hayes
patent: 5415679 (1995-05-01), Wallace
patent: 5431315 (1995-07-01), Chun et al.

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