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Munshi Mahbubul Basit,Amkee Kim,Seong Sik Cheon 대한기계학회 2006 대한기계학회 춘추학술대회 Vol.2006 No.11
Based on experimental impact testing data, due to changing of velocity and mass of the impactor simultaneously under constant impact energy, crashworthiness of polyurethane foam has been observed. Dynamic tests were carried out in an instrumented impact-testing machine. Observation made mean that, densification strain appears later and the net amount of useful absorbed energy increases with the velocity of the impactor, though impact energy is constant. Some general, quantitative conclusions and decisions of the crashworthiness of polyurethane foam at constant impact energy have been formulated.