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International Journal of Automotive Technology 2002;3(4): 157-163. |
| ULTRASONIC DETECTION OF INTERFACE CRACK IN ADHESIVELY BONDED DCB JOINTS |
| S.-I. PARK1, N.-Y. CHUNG1, M.-D. LEE2, C.-H. PARK3 |
1Soongsil University
2Dong Seoul College
3Hyundai Technical Institute |
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| ABSTRACT |
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It is well recognized that the ultrasonic method is one of the most common and reliable nondestructive testing (NDT) methods for the quantitative estimation of defects in welded structures. However, NDT techniques applying for adhesively bonded joints have not been clearly established yet. In this paper, the detection of interface crack by the ultrasonic method was applied for the maesurement of interfacial crack length in the adhesively bonded joints of double-cantilever beam (DCB). An optimal condition of transmission coefficients and experimental accuraccy by the ultrasonic method in the adhesively bonded joints have been investigated and discussed. The experimental values are in good agreement with the computed results by boundary element method (BEM) and Ripling's equation. |
| Key Words:
Adhesively bonded joint, Double-cantilever beam, Interface crack, Ultrasonic method, Straight beam test, Angle beam test, Transmission coefficient, Boundary element method |
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