ULTRASONIC SPECTROSCOPY USING A RAPID SWEEP TECHNIQUE

Traditional ultrasonic spectroscopy methods (narrow pulse, broadband ultrasonics) have often fallen short in application due to limitations on bandwidth and input energy. A system for ultrasonic spectroscopy that uses a swept-frequency input signal has been developed. The signal can cover a wide, us...

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Bibliographic Details
Published inE-journal of Nondestructive Testing Vol. 10; no. 8; p. 1
Main Authors Buckley, Joseph M, Tucker, James R
Format Journal Article
LanguageEnglish
Published 01.08.2005
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Summary:Traditional ultrasonic spectroscopy methods (narrow pulse, broadband ultrasonics) have often fallen short in application due to limitations on bandwidth and input energy. A system for ultrasonic spectroscopy that uses a swept-frequency input signal has been developed. The signal can cover a wide, user definable, range of frequencies resulting in a spectrum with a robust signal-to-noise ratio. The spectrum can also be designed to provide uniform input energy over the selected range of frequencies. The new ultrasonic spectroscopy technique has been used to quantitatively measure such diverse properties as porosity content and thickness loss in corrosion applications. It has also been successful in identifying disbonds in multiple layer structures. An overview of the technology along with application examples will be presented.
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ISSN:1435-4934
1435-4934