Fabrication of Ti-Ni alloys for proportional control
|Tae-hyun Nam 1, Cheol-am Yu , Yinong Liu , Yun-Jung Lee|
1. Gyeongsang National University (GSNU), 900 Gazwadong, Jinju 660-701, Korea, South
Ti-Ni alloys have been known to be very attractive for actuators because of their dual functional ability, i.e. sensing and operating in a single body. Especially, for applications to robotic devices, a linear relationship between the transformation strain and a physical quantity(usually temperature) together with a very small hysteresis is required. However, the transformation strain(ε) occurs steeply in a narrow temperature(T) range(usually within 3-5 K) in most of Ti-Ni based alloys, which makes difficult to control the position of actuators working according to changes in temperature. For an accurate position control responding to temperature changes, Ti-Ni alloys developing a gradual transformation strain(ε) over a wide temperature(T) range(i.e., low dε/dT) are desirable.
Presentation: poster at E-MRS Fall Meeting 2005, Symposium C, by Tae-hyun Nam
See On-line Journal of E-MRS Fall Meeting 2005
Submitted: 2005-05-12 10:04 Revised: 2009-06-07 00:44