Improving the Performance of Electrically Activated NiTi Shape Memory Actuators by Pre-Aging
Shape memory alloys possess an array of unique functional properties which are influenced by a complex interaction of different factors. Due to thermal sensitivity, slight changes in temperature may cause the properties to change significantly. This poses a huge challenge especially for the use of s...
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| Veröffentlicht in: | IOP conference series. Materials Science and Engineering 2017-06, Vol.216 (1), p.12007 |
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| creator | Rathmann1, Christian Fleczok1, Benjamin Otibar1, Dennis Kuhlenkötter, Bernd |
| description | Shape memory alloys possess an array of unique functional properties which are influenced by a complex interaction of different factors. Due to thermal sensitivity, slight changes in temperature may cause the properties to change significantly. This poses a huge challenge especially for the use of shape memory alloys as actuators. The displacement is the key performance indicator, which has to be of equal or better quality compared to conventional actuators. One problem of shape memory alloys is the change in functional fatigue in the first cycles, which makes it rather difficult to design the actuator. Therefore, the reduction of this shakedown effect is crucial. For this reason, this paper investigates the effect of electrical heat treatment as a method for pre-aging. This topic has so far been little investigated so that the investigations focus on identifying important factors and effects by using the design of experiments. |
| doi_str_mv | 10.1088/1757-899X/216/1/012007 |
| format | Article |
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| subjects | Actuators Aging (metallurgy) Design of experiments Heat treatment Investigations Shape memory alloys |
| title | Improving the Performance of Electrically Activated NiTi Shape Memory Actuators by Pre-Aging |
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