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Impact protection behavior of NiTi shape memory alloy wires

机译：NiTi形状记忆合金线的冲击防护性能

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摘要

This work studies the impact protection properties of both martensite NiTi wires and superelastic NiTi wires, with 0.5 mm diameter, at different initial impact energies using a new-designed impact test plant. In particular, impact experiments under a specific temperature range of A_s-A_f, were performed for the martensite NiTi wires. The test results show that both the martensite NiTi wires and superelastic NiTi wires have excellent impact protection properties and can dissipate a significant amount impact energy compared to other more metal materials such as Cu, Fe, and Al. Otherwise, the martensite NiTi wires can dissipate more impact energy in a shorter period of time than superelastic NiTi wires while generating a smaller impact force, F_(max), due to their larger plastic deformation energy. Moreover, the dissipated energy, W_d, of martensite wires increases from 23.8 MJ/m~3 to 53.6 MJ/m~3, and the impact force, F_(max), increases from 42.96 N to 95.9 N, while the temperature rises from 35 ℃ to 65 ℃. That means the impact protection properties of martensite NiTi wires are temperature dependent in a specific temperature range A_s-A_f. Those results in this study also reveal that the impact protection properties of both martensite NiTi wires and superelastic NiTi wires represent the basis for new shape memory damping element applications, particularly in automotive safety systems.
机译：这项工作使用新设计的冲击试验装置，研究了直径为0.5 mm的马氏体NiTi线和直径为0.5 mm的超弹性NiTi线的冲击防护性能。特别地，在马氏体NiTi丝的特定温度范围A_s-A_f下进行了冲击实验。测试结果表明，与其他更多金属材料（例如Cu，Fe和Al）相比，马氏体NiTi线和超弹性NiTi线均具有出色的冲击防护性能，并且可以耗散大量冲击能量。否则，马氏体NiTi丝比超弹性NiTi丝可以在更短的时间内消散更多的冲击能量，同时由于其较大的塑性变形能而产生较小的冲击力F_（max）。此外，马氏体丝的耗散能量W_d从23.8 MJ / m〜3增加到53.6 MJ / m〜3，冲击力F_（max）从42.96 N增加到95.9 N，而温度从35℃至65℃。这意味着在特定温度范围A_s-A_f中，马氏体NiTi线的冲击防护性能取决于温度。这项研究的结果还表明，马氏体NiTi线和超弹性NiTi线的冲击防护性能代表了新形状记忆阻尼元件应用的基础，尤其是在汽车安全系统中。

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  • 来源
    《Materials Science and Engineering》 |2017年第17期|132-139|共8页
  • 作者

    Chuanliang Shen; Zhipeng Wu; Zhenhai Gao; Xiaoyu Ma; Shengtong Qiu; Yi Liu; Tairong Sun;

  • 作者单位

    State Key Laboratory of Automotive Simulation and Control, Jilin University, Changchun 130025, China;

    State Key Laboratory of Automotive Simulation and Control, Jilin University, Changchun 130025, China;

    State Key Laboratory of Automotive Simulation and Control, Jilin University, Changchun 130025, China;

    State Key Laboratory of Automotive Simulation and Control, Jilin University, Changchun 130025, China;

    State Key Laboratory of Automotive Simulation and Control, Jilin University, Changchun 130025, China;

    State Key Laboratory of Automotive Simulation and Control, Jilin University, Changchun 130025, China;

    State Key Laboratory of Automotive Simulation and Control, Jilin University, Changchun 130025, China;

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  • 正文语种 eng
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  • 关键词

    Impact testing plant; NiTi SMA wires; Impact test; Energy absorption; Temperature load;

    机译：冲击试验厂;NiTi SMA线;碰撞测试;能量吸收温度负荷;

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