| 摘要 |
<p>The invention concerns a method of testing piezo-electric transducers comprising locating one end (11) of a rod (10) of solid material over the active head (20) of the transducer, the rod (10) simulating the normal acoustic impedance presented to the transducer by the normal medium, in which the transducer is intended to operate, energising the transducer and detecting the acoustic wave propagated through the rod by means located at the other end of the rod. The invention also includes a loading rod for use in testing a piezo-electric transducer, the rod comprising an elongated solid body so dimensioned as to simulate the normal operating acoustic impedance presented to a piezo-electric transducer to be tested.</p> |
