Transactions of the Korean Society of Mechanical Engineers (대한기계학회논문집)
- Volume 8 Issue 1
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- Pages.41-47
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- 1984
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- 1225-5963(pISSN)
DOI QR Code
Testing of Mechanical Properties on Dissimilar Metal Friction Welds
異性材料 마찰용접부의 기계적 성질검사
Abstract
Increase of the requirements on quality of welded structures necessitates the improvement of known inspection methods and the introduction of progressive new techniques. Non-destructive methods are the most advanced, but there are considerable difficulties in using the methods of radiography with electromagnetic rays and ultrasonic testing in the inspection of dissimilar metal friction welds, because their physical and mechanical properties are changed very rapidly at the interface. The values of simple mechanical test for dissimilar metal friction welds have always been dubious, as the strength of the bond is often greater than that of the softer materials being jointed. Thus, in this paper some conventional mechanical testing methods are examined in an attempt to determine a technique for dissimilar metal friction welds, which will give a reliable quantitative indication of the weld quality. From the considered static and dynamic testing methods the impact bending test on unnotched and notched specimens are the most sensitive to find out the small joining defects in the interface.
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