UNSPECIFIED. (1999) Improvements to dry-coupled ultrasound for wall thickness and weld inspection. INSIGHT, 41 (11). pp. 704-706. ISSN 1354-2575

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Abstract

This paper describes results from a dual approach to tackle the problems associated with dry coupling. Various rubbers are examined for their ultrasonic properties and additional amplification is used to compensate for high-frequency losses. As a result, we have established that standard rubbers can be used as dry couplant materials for zero-degree longitudinal wave applications. A new dry couplant material has been discovered with good high-frequency transmission characteristics. With this material it has even been possible to produce dry-coupled angled shear waves transducers suitable for flaw detection in welds. The 'dry couplant' also has a very low acoustic impedance and can be used for matching air-coupled transducers.

Item Type:	Journal Article
Subjects:	T Technology > TA Engineering (General). Civil engineering (General)
Journal or Publication Title:	INSIGHT
Publisher:	BRITISH INST NON-DESTRUCTIVE TESTING
ISSN:	1354-2575
Date:	November 1999
Volume:	41
Number:	11
Number of Pages:	3
Page Range:	pp. 704-706
Publication Status:	Published
URI:	http://wrap.warwick.ac.uk/id/eprint/13991

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