Thermally activated lightweight actuator based on hot extruded shape memory metal matrix composites (SMA-MMC)
Thermally activated lightweight actuator based on hot extruded shape memory metal matrix composites (SMA-MMC)
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DOI：
10.1016/j.proeng.2017.10.1083
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发表时间：
2017
期刊：
影响因子：
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通讯作者：
C. Dahnke;A. Shapovalov;A. Tekkaya
中科院分区：
文献类型：
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作者：
C. Dahnke;A. Shapovalov;A. Tekkaya
基于改进的舷窗模具，连续复合挤压可以制造形状记忆合金金属基复合材料（SMA-MMC）。为了扩展SMA-MMC的功能，本工作展示了一种基于铝基体内集成NiTi导线的新致动器概念。由于钢丝的偏心定位和预紧，当温度升高到临界值时，在型材内产生弯矩。根据工艺参数的不同，发生的弯矩能够引起型材或试样的弹性或弹塑性变形。
Based on modified porthole dies, continuous composite extrusion allows the manufacturing of shape memory alloy metal matrix composites (SMA-MMC). In order to extend the functionality of SMA-MMC, the present work shows a new actuator concept based on integrated NiTi wires within an aluminum matrix. Due to an eccentric positioning of the wires as well as a prestraining, a bending moment is generated within the profile when the temperature is increased to a critical value. Depending on the process parameters, the occurring bending moment is able to cause an elastic or elastic-plastic deformation of the profile or specimen.