Institute of Fundamental Technological Research
Polish Academy of Sciences


Kento Mitsui

Masupuro Denkoh Corp. (JP)

Recent publications
1.  Tobushi H., Pieczyska E.A., Miyamoto K., Mitsui K., Torsional deformation characteristics of TiNi SMA tape and application to rotary actuator, JOURNAL OF ALLOYS AND COMPOUNDS, ISSN: 0925-8388, DOI: 10.1016/j.jallcom.2011.10.108, Vol.577S, pp.S745-S748, 2013

In order to develop novel shape memory actuators, the torsional deformation of a shape memory alloy (SMA) tape and the actuator models driven by the tape were investigated. The results obtained can be summarized as follows. In the SMA tape subjected to torsion, the martensitic transformation appears along the edge of the tape due to elongation of the edge of the tape and grows to the central part. The fatigue life in both the pulsating torsion and the alternating torsion is expressed by the unified relationship of the dissipated work in each cycle. Based on an opening and closing door model and a solar-powered active blind model, the two-way rotary driving actuator with a small and simple mechanism can be developed by using torsion of the SMA-tape.

Shape memory alloy, Actuator, Two-way, Tape, Torsion, Fatigue

Tobushi H. - Aichi Institute of Technology (JP)
Pieczyska E.A. - IPPT PAN
Miyamoto K. - Churyo Engineering Co. (JP)
Mitsui K. - Masupuro Denkoh Corp. (JP)
2.  Takeda K., Mitsui K., Tobushi H., Levintant-Zayonts N., Kucharski S., Influence of nitrogen ion implantation on deformation and fatigue properties of TiNi shape memory alloy wire, ARCHIVES OF MECHANICS, ISSN: 0373-2029, Vol.65, No.5, pp.391-405, 2013

A shape memory alloy (SMA) is expected to be applied as intelligent material since it shows the unique characteristics of the shape memory effect and superelasticity. Most SMA elements, with these characteristics, perform cyclic motions. In these cases, fatigue of SMA is one of the important properties in view of evaluating functional characteristics. The fatigue properties are complex since they depend on stress, strain, temperature and time. If SMA is implanted by high energy ions, the thermomechanical properties may change, resulting in long fatigue life. In the present study, the nitrogen ion implantation was applied to modify TiNi SMA wire surface and the influence of implantation treatment on the tensile deformation and bending fatigue properties was investigated.

shape memory effect, titanium-nickel alloy, nitrogen ion implantation, superelasticity, fatigue

Takeda K. - Aichi Institute of Technology (JP)
Mitsui K. - Masupuro Denkoh Corp. (JP)
Tobushi H. - Aichi Institute of Technology (JP)
Levintant-Zayonts N. - IPPT PAN
Kucharski S. - IPPT PAN
3.  Tobushi H., Pieczyska E.A., Miyamoto K., Mitsui K., Shape-Memory Alloy Thin Strip Rotary Actuator, MATERIALS SCIENCE FORUM, ISSN: 0255-5476, Vol.674, pp.219-224, 2011

Category A Plus


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