期刊
ADVANCED ENGINEERING MATERIALS
卷 24, 期 1, 页码 -出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adem.202100659
关键词
NiTi; pseudoelasticity; shape memory alloys; torque limiters
资金
- Consiglio Nazionale delle Ricerche within the CRUI-CARE Agreement
This torsional device utilizes shape memory alloy elements to function as a torque limiter, with pseudoelastic NiTi tapes working in series configuration. By adjusting the number of tapes, the torque output can be tuned from pulsating to continuous. The temperature-dependent response enabled by NiTi material provides a stable cyclic response for the device.
Herein, a new torsional device based on shape memory alloy elements and operating as torque limiter is presented. It consists of a set of pseudoelastic NiTi tapes working in series configuration. The tapes are assembled radially with respect to the rotational direction and work sequentially in beam-like bending mode. The trend of the resulting torque may span from pulsating to continuous by changing the number of tapes. Furthermore, the use of NiTi material enables a temperature-dependent response. Due to the particular mounting, the flag-shaped pseudoelastic mechanical behavior typical of NiTi is partially hidden; however, the use of pseudoelastic elements provides a stable cyclic response and enables the possibility to tune the output torque.
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