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2003 (English)Conference paper (Refereed) PublishedAlternative title
Två användningar av öppen-resonatorkoncept i oförstörande provning (Swedish)
Abstract [en]

Two ways in which the concept of open resonator can be used in connection with nondestructive evaluation will be described. In the first, a non-contact transducer's efficiency of transferring energy into an object can be increased by utilizing the resonance of the gap between the transducer and object. By choosing the gap distance, frequency and transducer width a resonant wave appears which will have a considerably larger amplitude at the object surface. Secondly, by fitting the critical parameters of open resonators for thin objects, like extended plates, the wave field inside the object can be localized. Thus some Nonlinear Elastic Wave Spectroscopy methods may be used to determine the location of damage.

Abstract [sv]

Man kan använda öppen resonator för att öka insignalen till ett objekt vid ickeberörande oförstörande provning, och man kan med öppen resonatorkoncept lokalisera ljudfältet så att man kan använda bla de extremt känsliga ickelinjära ultraljudsmetoderna vid lokalisering av skadade områden.

Place, publisher, year, edition, pages
Stockholm: International Institute of Acoustics and Vibration , 2003.
Keyword [en]
Nonlinear acoustics, nondestructive testing, nonlinear elastic wave spectroscopy
National Category
Applied Mechanics Signal Processing
URN: urn:nbn:se:bth-10220Local ID: diva2:838293
Tenth International Congress on Sound and Vibration
Available from: 2012-09-18 Created: 2003-09-02 Last updated: 2015-06-30Bibliographically approved

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Hedberg, Claes
Applied MechanicsSignal Processing

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