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Patent

Ultrasonic inspection device

Elroy J Mc
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TLDR
In this article, a non-destructive material tester consisting of a search unit of lithium niobate cut normal to the 0 DEG Y axis has been presented, where the parallel faces have electrical energy of ultrasonic frequency applied to the test object and receive ultrasonic energy from a test object.
Abstract
A nondestructive material tester which is comprised of a search unit of lithium niobate cut normal to the 0 DEG Y axis. The parallel faces normal to the 0 DEG Y axis have electrical energy of ultrasonic frequency applied thereto and receive ultrasonic energy from a test object.

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References
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Lithium niobate transducers

TL;DR: In this paper, the authors describe ultrasonic transducers made from single crystal lithium niobate and five crystal orientations for which transducer characteristics are especially favorable for ultrasonic applications.