Host: The Japan Society of Mechanical Engineers
Name : [in Japanese]
Date : October 08, 2016 - October 10, 2016
Since Ti-Ni shape memory alloys(SMAs) work well at temperature less than 373K ,SMAs are expect to apply the heat-engine which recovers low temperature thermal energy .The pulley-type SMA heat-engine, which is one of the SMA heat-engine, is driven by heating and cooling of the liner or coil shape SMA element. We fabricated tape-shaped SMA element for the purpose of improving the product's life span. However, shape memory and mechanical characteristics of tape-shaped SMA is deteriorated with increasing number of heating and cooling cycle. This function deterioration leads to variation of transformation temperatures and shape memory characteristics. The output power of SMA heat-engine depends on the transformation temperature and shape memory characteristics of SMA element. Owing to this, the improvement of function deterioration characteristics of SMA element leads to the output stabilization of SMA heat-engine. In this research, the effects of heating and cooling cycle on the shape memory and mechanical characteristics of tape-shaped SMA element is investigated.
