Abstract
Since the last decade, there is an increasing demand for applications of resistance spot welding process in automotive industry. Today, an ordinary car may contain about 3000–4000 spot weld points. It is necessary to evaluate spot welded thin sheets in the dynamic loading conditions for determining optimal welding conditions and composition of metallic materials.This paper entails the characterisation and understanding the behaviour of thin welds of different grades of steels in dynamic loading conditions such as those experienced in automotive crash test. Evaluation of resistance to dynamic failure will be studied through impact tensile test (ITT). This research will contribute to the selection of optimal welding conditions and to the development of new grade steels for automotive applications.
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