Journal ArticleDOI
Measurement of the frequency dependence of the ultrasonic reflection coefficient from thin interface layers and partially contacting interfaces
Bruce W. Drinkwater,Peter Cawley +1 more
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TLDR
In this paper, the authors present examples where apparently reasonable time domain results did not show the expected behaviour in the frequency domain, and the problem has been traced to subtle flaws in the design of the experiments.About:
This article is published in Ultrasonics.The article was published on 1997-11-01. It has received 34 citations till now. The article focuses on the topics: Frequency domain & Time domain.read more
Citations
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Space charge accumulation in polymeric high voltage DC cable systems
TL;DR: In this paper, a physical model has been developed for the prediction of space charge dynamics and electric field in loaded polymeric HVDC cable systems, which has been validated by means of laboratory investigation.
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SH ultrasonic guided waves for the evaluation of interfacial adhesion.
TL;DR: This work suggests a promising use of SH-like guided modes for quantifying shear properties at adhesive interfaces, and shows that such waves can be used for inferring adhesive and cohesive properties of bonds separately.
Journal ArticleDOI
Acoustical methods for the investigation of adhesively bonded structures: A review
E. Maeva,Inna Severina,Sergiy Bondarenko,G. B. Chapman,Brian E. O'Neill,F. Severin,Roman Gr. Maev +6 more
TL;DR: In this paper, the authors used acoustical methods for flaw detection, visualization, and local parameter measurement of different materials and found that these techniques are irreplaceable tools, and that they are widely used for almost 30 years.
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Space charge measurements on multi-dielectrics by means of the pulsed electroacoustic method
TL;DR: In this paper, the pulsed electroacoustic (PEA) method is applied to multi-dielectric test objects composed of two or more layers of different dielectrics.
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Inverse ultrasonic determination of imperfect interfaces and bulk properties of a layer between two solids
TL;DR: A method for determination of the complete set of physical, geometrical, and interfacial properties of an isotropic layer embedded between two known solids, which includes Lamé elastic moduli, density and thickness of the layer, and complex normal and transverse interfacial stiffnesses between the layer and the substrates.
References
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Journal ArticleDOI
Review of progress in quantitative NDE: Williamsburg, VA, USA, 21–26 June 1987
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Ultrasonic scattering from imperfect interfaces: A quasi-static model
Jai-Man Baik,R. Bruce Thompson +1 more
TL;DR: In this article, a quasi-static model for ultrasonic transmission and reflection at imperfect interfaces is developed, where the interface is represented by a distributed spring determined by the change in static compliance of the medium with respect to one with a perfect interface, and a distributed mass, representing excess mass at the interface.
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Ultrasonic classification of imperfect interfaces
TL;DR: In this paper, it is shown that the ratio between the normal and transverse interfacial stiffnesses can be used to classify the interface imperfections, e.g., kissing, partial, and slip bonds.
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A Study of the Interaction between Ultrasound and a Partially Contacting Solid--Solid Interface
TL;DR: In this article, the authors measured the reflection of ultrasonic waves from partially contacting aluminium-aluminium interfaces, performed in the low frequency regime where the wavelength of the ultrasound is large compared to the size of the gaps.
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The ultrasonic pulse-echo technique as applied to adhesion testing
TL;DR: In this paper, it has been found that it is possible to detect slackness at an interface, in situations where this slackness is not severe enough to amount to an actual unbond.