Journal ArticleDOI
Ultrasonic scattering from imperfect interfaces: A quasi-static model
Jai-Man Baik,R. Bruce Thompson +1 more
TLDR
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.Abstract:
A quasi-static model for the ultrasonic transmission and reflection at imperfect interfaces is developed. 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. Comparison of the model predictions to exact solutions for two simple cases illustrates its accuracy at low frequencies. The spring stiffnesses can be derived from existing solutions for the elastic displacement of materials containing cracks and inclusions under static load. Results for a variety of cases are reviewed. Applications of the model to study the characteristics of partially contacting surfaces in several problem areas of current interest are discussed.read more
Citations
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Journal Article
Propagation of generalized thermoelastic pIane waves at an imperfect interface
Journal ArticleDOI
Decomposition of the Two Lowest Lamb Modes in a Bonded Plate
TL;DR: In this paper, the relationship between the rigidity of the bond and the velocity of the two lowest Lamb modes is found, which lay a foundation for the estimation of the adhesive plate's rigidity.
DissertationDOI
Quantitative Evaluation of Ultrasonic Wave Propagation in Inhomogeneous Anisotropic Austenitic Welds using 3D Ray Tracing Method
Journal ArticleDOI
Elasto-plastic micromechanical model for determination of dynamic stiffness and real contact area from ultrasonic measurements
TL;DR: In this article, a new probability density function of the asperity height is derived, which takes into account plastic deformation, and some results illustrating the behavior of the static and dynamic interfacial stiffness during a complete loading-unloading cycle are presented.
Journal Article
Subharmonic Wave Generation at Interfaces of a Thin Layer between Metal Blocks (Special Issue : Ultrasonic Electronics) -- (Measurement techniques, imaging, nondestructive evaluation)
Takahiro Hayashi,Shiro Biwa +1 more
TL;DR: In this article, the relationship of the subharmonic wave generation, the applied contact pressure, and the stress of the ultrasonic wave has been analyzed, and it has been shown that sub-harmonic components can be generated when the incident ultrasonic waves has sufficiently large stress to separate the contacting interfaces.
References
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Book
Theory of elasticity
TL;DR: The theory of the slipline field is used in this article to solve the problem of stable and non-stressed problems in plane strains in a plane-strain scenario.
Book
The stress analysis of cracks handbook
TL;DR: The Stress Analysis of Cracks Handbook as mentioned in this paper provides a comprehensive, easy-to-access collection of elastic stress solutions for crack configurations, along with other relevant information, such as displacements, crack opening areas, basic stress functions source references, accuracy of solutions, and more.
Book
Micromechanics of defects in solids
Toshio Mura,D. M. Barnett +1 more
TL;DR: In this paper, the authors present numerical simulation of intergranular and transgranular crack propagation in ferroelectric polycrystals using double kink mechanisms for discrete dislocations in BCCs.
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