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Improvements to dry-coupled ultrasound for wall thickness and weld inspection
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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 | ||||
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Subjects: | T Technology > TA Engineering (General). Civil engineering (General) | ||||
Journal or Publication Title: | INSIGHT | ||||
Publisher: | BRITISH INST NON-DESTRUCTIVE TESTING | ||||
ISSN: | 1354-2575 | ||||
Official Date: | November 1999 | ||||
Dates: |
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Volume: | 41 | ||||
Number: | 11 | ||||
Number of Pages: | 3 | ||||
Page Range: | pp. 704-706 | ||||
Publication Status: | Published |
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