2. Introduction to Search Unit Design
Published Online: 2 JUL 2012
Copyright © 2012 the Institute of Electrical and Electronics Engineers, Inc.
Ultrasonic Inspection Technology Development and Search Unit Design: Examples of Practical Applications
How to Cite
Brook, M. V. (2011) Introduction to Search Unit Design, in Ultrasonic Inspection Technology Development and Search Unit Design: Examples of Practical Applications, John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9781118104781.ch2
- Published Online: 2 JUL 2012
- Published Print: 18 NOV 2011
Print ISBN: 9780470874349
Online ISBN: 9781118104781
- piezoelectric crystals;
- ultrasonic waves
The success of any ultrasonic inspection depends very much on the right selection of the search units or transducers, which generate, transmit, and receive ultrasonic waves and thus provide a considerable amount of information about existing reflectors in the test object. A search unit (or the more popular term probe ), consists not only of a transducer but also of other components, for example, a wedge, lens, or mirror, to redirect and shape the ultrasonic beam according to the inspection requirements. The main objective of the wedge is to transmit ultrasonic energy from the transducer through the interface with a test object to create in it an acoustic field suitable for a given inspection application. This chapter presents guidelines for selecting a transducer or a crystal assembly for a given inspection, or for writing specifications for their fabrication. It summarizes the main characteristics of currently used piezoelectric crystals.
Controlled Vocabulary Terms
piezoelectric materials; probes; ultrasonic transducers