A Safety Device Based on a High Temperature Shape Memory Alloy

IF 0.4 Q4 ENGINEERING, MECHANICAL Journal of Machinery Manufacture and Reliability Pub Date : 2023-12-18 DOI:10.1134/s1052618823060134

N. N. Popov, D. V. Presnyakov, A. A. Kostyleva

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Abstract

A device has been developed based on alloys with a high-temperature shape memory effect. It aims to be used in mechanical engineering products, in particular, nuclear technology, in order to prevent emergency situations of man-made and natural nature. The device works by breaking the electrical circuit in the event of an emergency increase in the ambient temperature above the permissible temperature by cutting the electrical cable. The shape restoration properties of thermosensitive working elements made of the Ni_49.5Ti_48.0Hf_2.5 alloy with high temperature shape memory have been studied. The results of the experiments allow us to conclude that it is possible to use the device in electrical systems for cutting heat-resistant electrical cables with an outer diameter of d_out = 3.4–5.0 mm and a copper wire cross-section of 0.2–1.5 mm² with a knife in an emergency situation, when the ambient temperature exceeds 100°С and the maximum heating reaches 200°С.

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基于高温形状记忆合金的安全装置

摘要在具有高温形状记忆效应的合金基础上开发了一种装置。该装置旨在用于机械工程产品，特别是核技术，以防止人为或自然的紧急情况。该装置的工作原理是，在环境温度紧急升高超过允许温度时，通过切断电缆断开电路。我们对具有高温形状记忆的 Ni49.5Ti48.0Hf2.5 合金制成的热敏工作元件的形状恢复特性进行了研究。实验结果使我们得出结论：当环境温度超过 100°С，最大加热温度达到 200°С，可以在电气系统中使用该装置，在紧急情况下用刀切割外径为 dout = 3.4-5.0 mm、铜线截面为 0.2-1.5 mm2 的耐热电缆。

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来源期刊

Journal of Machinery Manufacture and Reliability ENGINEERING, MECHANICAL-

CiteScore

0.80

自引率

33.30%

发文量

期刊介绍： Journal of Machinery Manufacture and Reliability is devoted to advances in machine design; CAD/CAM; experimental mechanics of machines, machine life expectancy, and reliability studies; machine dynamics and kinematics; vibration, acoustics, and stress/strain; wear resistance engineering; real-time machine operation diagnostics; robotic systems; new materials and manufacturing processes, and other topics.