11. Search Unit Functioning Test
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) Search Unit Functioning Test, in Ultrasonic Inspection Technology Development and Search Unit Design: Examples of Practical Applications, John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9781118104781.ch11
- Published Online: 2 JUL 2012
- Published Print: 18 NOV 2011
Print ISBN: 9780470874349
Online ISBN: 9781118104781
- IIW Reference block;
Generally, a new fabricated ultrasonic search unit is evaluated by the manufacturer and a test report is included with the search unit. Evaluation of the certain characteristics of ultrasonic search units has to be performed in accordance with the ASTM E 1065 - 08 Standard Guide for Evaluating Characteristics of Ultrasonic Search Units. This guide provides a description of the measurement procedures for evaluating the certain characteristics of each unit, which may be used to define their acoustic responses. The specific parameters to be measured depend on the end use of the search unit. The most common reference block used for measuring the probe’s exit point and refracted angle is the IIW Reference Block Type 1 or 2. These blocks are relatively complicated and not convenient to use. The problems with IIW blocks can be partly avoided by using simplified test blocks.
Controlled Vocabulary Terms
probes; ultrasonic materials testing