石油科学（英文版）
石油科學（英文版）
석유과학（영문판）
PETROLEUM SCIENCE
2005年
3期
40-43
,共4页
许仁波%崔立山%郑雁军%陈洪玲
許仁波%崔立山%鄭雁軍%陳洪玲
허인파%최립산%정안군%진홍령
TiNi shape memory alloy%contact force%contact time%impact energy
The mechanical behaviors of Ti-50.7%Ni shape memory alloy under a dynamic impact loading condition were investigated by a home-built impact testing system. Both the contact force and the contact time during the impact process were measured with a piezoelectric force sensor and a digital signal processing system in real time. The predicted instantaneous velocity and the displacement formulae are presented. Results show that the maximum contact force increased, while the contact time decreased with the increase of the temperature when the TiNi alloy was in a martensitic state. When the compressive stress during the impact process was higher than the critical stress of the stress-induced martensitic transformation, the TiNi alloy specimen in the parent phase left no permanent deformation but could dissipate the impact energy.
