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Information Technology Journal

Year: 2010 | Volume: 9 | Issue: 8 | Page No.: 1665-1670
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Authors

Yao-Jen Lai

Long-Jyi Yeh

Min-Chie Chiu

Keywords

Research Article

A Study of the Ti50Ni45Cu5-made Dynamic Splints in a Medical Finger Joint

Yao-Jen Lai, Long-Jyi Yeh and Min-Chie Chiu
The issue, here, is to develop a SMA-made bending actuator system used in the medical treatment of an injured finger. To acquire the practical swinging angle and the related heating temperature (Ts) at various loading forces, a series of experimental processes in detecting the above data using an image-captured detecting system via the web camera in conjunction with the VB interface are performed. Five wires of the shape memory alloy (SMA-Ti50Ni45Cu5 with 0.6 mm in Φ and 0.06 m in length) are arranged in parallel with a span of 0.0025 m. The SMA-made wires are connected with two spans (0.0025 and 0.002 m) along the wires using three pieces of plastic rod. Experimental work for investigating the characteristics of the SMA-made bending actuator is performed. Results reveal that under the ambient temperature of 26°C, the finger-shaped bending actuator will provide a bending torque of 0.078NM at a swinging angle of 72° when the SMA-made bending actuator is heated within 33-51°C.
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