Thermal cycling of stress-induced martensite for high-performance shape memory effect

2014 ◽  
Vol 80 ◽  
pp. 13-16 ◽  
Author(s):  
Riccardo Casati ◽  
Maurizio Vedani ◽  
Ausonio Tuissi
Keyword(s):  
Thermal Cycling ◽  
Shape Memory ◽  
Shape Memory Effect ◽  
Memory Effect ◽  
High Performance

High performance shape memory effect in nitinol wire for actuators with increased operating temperature range

2014 ◽  
Vol 07 (05) ◽  
pp. 1450063 ◽  
Author(s):  
Riccardo Casati ◽  
Carlo Alberto Biffi ◽  
Maurizio Vedani ◽  
Ausonio Tuissi
Keyword(s):  
Shape Memory ◽  
Shape Memory Effect ◽  
Memory Effect ◽  
High Performance ◽  
Room Temperature ◽  
Operating Temperature ◽  
Niti Wire ◽  
Shape Memory Actuators ◽  
Nitinol Wire ◽  
Operating Temperature Range

In this research, the high performance shape memory effect (HP-SME) is experimented on a shape memory NiTi wire, with austenite finish temperature higher than room temperature. The HP-SME consists in the thermal cycling of stress induced martensite and it allows achieving mechanical work higher than that produced by conventional shape memory actuators based on the heating/cooling of detwinned martensite. The Nitinol wire was able to recover about 5.5% of deformation under a stress of 600 MPa and to withstand about 5000 cycles before failure. HP-SME path increased the operating temperature of the shape memory actuator wire. Functioning temperatures higher than 100°C was reached.

Improving the structure stabilization of red phosphorus anodes via the shape memory effect of a Ni–Ti alloy for high-performance sodium ion batteries

2019 ◽  
Vol 55 (32) ◽  
pp. 4659-4662 ◽  
Author(s):  
Yingtao Wang ◽  
Xiaodan Yang ◽  
Chenyang Zhao ◽  
Yongliang Li ◽  
Hongwei Mi ◽  
...  
Keyword(s):  
Shape Memory ◽  
Shape Memory Effect ◽  
Memory Effect ◽  
High Performance ◽  
Sodium Ion ◽  
Sodium Ion Batteries ◽  
Ti Alloy ◽  
Red Phosphorus ◽  
Structure Degradation ◽  
Structure Stabilization

The shape memory effect of a Ni–Ti alloy was applied to prevent the structure degradation of red phosphorus anodes for sodium-ion batteries.

Thermal cycling stability and two-way shape memory effect of Ni–Cu–Ti–Hf alloys

2001 ◽  
Vol 119 (6) ◽  
pp. 381-385 ◽  
Author(s):  
X.L. Liang ◽  
Y. Chen ◽  
H.M. Shen ◽  
Z.F. Zhang ◽  
W. Li ◽  
...  
Keyword(s):  
Thermal Cycling ◽  
Shape Memory ◽  
Shape Memory Effect ◽  
Memory Effect ◽  
Cycling Stability

Carbon fiber fabric/epoxy composites with electric- and light-responsive shape memory effect

2020 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Laiming Yu ◽  
Tianqi Zhang ◽  
Wenjun Wang ◽  
Yubing Dong ◽  
Yaqin Fu
Keyword(s):  
Mechanical Properties ◽  
Carbon Fiber ◽  
Shape Memory ◽  
Shape Memory Effect ◽  
Memory Effect ◽  
High Performance ◽  
Content Type ◽  
Carbon Fiber Fabric ◽  
Waterborne Epoxy ◽  
Fiber Fabric

Purpose This study aims to discuss the effect of carbon fiber on the electric-respone of shape memory epoxy property. Epoxy (EP) is a typical excellent thermosetting shape memory polymer (SMP). To enrich the shape memory epoxy (SMEP) responsive mode, the carbon fiber fabric-reinforced SMEP composites were prepared, and the mechanical properties and the electric- and light-responsive shape memory effect of the composites were investigated and confirmed. Design/methodology/approach The carbon fiber fabric/SMEP composites were prepared via a dipping method. The carbon fiber fabric was dipped into the waterborne epoxy emulsion and dried at room temperature and then post-cured in the oven at 120 °C for 2 h. The mechanical properties and the multi-responsive shape memory properties of the composites were tested and confirmed via tensile test instrument, DC electrical source and near-infrared (NIR) laser source control system. Findings The carbon fiber fabric/SMEP composites showed excellent electric- and light-responsive shape memory effect. Research limitations/implications High performance and multi-responsive shape memory materials have always been the goal of the scientists. Carbon fiber fabric and SMEP both consist of a good reputation in the field of composites, and the combination of both would set a solid foundation for getting a high performance and multi-responsive shape memory effect materials, which will enrich the responsive mode and broaden the application of SMEP. Originality/value Multi-responsive SMEP composites were prepared from waterborne epoxy and carbon fiber fabric.

Sn buffered by shape memory effect of NiTi alloys as high-performance anodes for lithium ion batteries

2012 ◽  
Vol 60 (12) ◽  
pp. 4695-4703 ◽  
Author(s):  
Renzong Hu ◽  
Min Zhu ◽  
Hui Wang ◽  
Jiangwen Liu ◽  
Ouyang Liuzhang ◽  
...  
Keyword(s):  
Shape Memory ◽  
Lithium Ion Batteries ◽  
Shape Memory Effect ◽  
Memory Effect ◽  
High Performance ◽  
Lithium Ion ◽  
Niti Alloys
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