Abstract
In order to develop a brain spatula made of a shape memory alloy (SMA), the bending deformation characteristics of the TiNi SMA brain spatula made by the precision casting were discussed by the cyclic three-point bending test. The results obtained can be summarized as follows. (1) Maximum force in the cyclic three-point bending increases in the initial 10 cycles and changes slightly thereafter. The change in force-deflection curve under cycling for alternating bending is larger than that for pulsating bending. (2) Dissipated work in the cyclic three-point bending decreases in the initial 10 cycles and changes slightly thereafter.
