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http://dx.doi.org/10.3795/KSME-A.2011.35.9.1113

Reflection and Transmission Characteristics of Oblique-Incidence Ultrasonic Waves at Solid-Solid Contact Interfaces  

Nam, Tae-Hyung (Dept. of Automotive Engineering, Hanyang Univ.)
Kim, Chung-Seok (Dept. of Automotive Engineering, Hanyang Univ.)
Lee, Tae-Hun (Dept. of Automotive Engineering, Hanyang Univ.)
Jhang, Kyung-Young (School of Mechanical Engineering, Hanyang Univ.)
Kim, Noh-Yu (Korea Univ. of Technology and Education)
Publication Information
Transactions of the Korean Society of Mechanical Engineers A / v.35, no.9, 2011 , pp. 1113-1118 More about this Journal
Abstract
In order to evaluate the characteristics of solid-solid contact interfaces, reflection or transmission techniques involving normal-incidence longitudinal waves are generally used. However, these normal-incidence techniques are of limited use in field applications such as in the inspection of welded parts. The oblique-incidence ultrasonic technique may be an alternative for overcoming these problems. However, in this technique, the mode conversion at the contact interfaces should be taken into account along with the normal and tangential interface stiffness. In this study, we have suggested a theoretical model for obliqueincidence ultrasonic waves at the contact interfaces and analyzed their reflection and transmission characteristics. Experimental results showed that the measured reflection coefficient and second harmonic wave agreed well with the suggested theoretical model. Consequently, the oblique-incidence technique can be a promising method for evaluating the characteristics of the contact interfaces.
Keywords
Contact Interfaces; Ultrasonic Reflection; Normal/Tangential Interfacial Stiffness; Oblique Incidence Ultrasonic wave;
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Times Cited By KSCI : 1  (Citation Analysis)
Times Cited By SCOPUS : 0
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