抄録
In vehicle manufacturers, it is demanded to develop the design of light-weight and high stiffness automotive body for reduction of CO2 emission. Recently, in order to satisfy the two conflicting demands, the tailored blanks technique using high tensile strength steels attracts attention. Then for contributing the fundamental data it may be important to examine not only the static and fatigue properties but also the dynamic characteristics of impact deformation strength of welded structural members of high strength steel sheets. In the present study the measurement of impact tensile strength of welded structural members for vehicles is performed by means of the modified split Hopkinson bar method for tensile test.
