12 April 2012 Characterization of high damping TiNi shape memory alloy
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Proceedings Volume 8409, Third International Conference on Smart Materials and Nanotechnology in Engineering; 84093A (2012) https://doi.org/10.1117/12.923628
Event: Third International Conference on Smart Materials and Nanotechnology in Engineering, 2011, Shenzhen, China
Abstract
TiNi shape memory alloys exhibit superior shape memory effect, superelasticity, and high damping capacity. The damping behaviour of a ternary TiNiCu7 alloy were characterized by dynamic mechanical analyzer (DMA) instrument, dynamic mechanical thermal analysis (DMTA) and differential scanning calorimetry (DSC) equipment. The loss factor Tanδ, storage modulus E' and loss modulus E" of shape memory alloy aging followed by furnace cooling and air cooling were Measured. It shows that test method and cooling rate of aging have significant effect on the results of damping capacity of TiNi SMA. Internal friction values (Q-1) corresponding to cubic B2 parent phase to rhombohedral R phase transformation are as high as 0.14 for the TiNiCu7 alloy measured by DMA in single cantilever mode, lower than that of 0.21 measured by DMTA in three-point bending mode.
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Zhishan Yuan, Jingli Hu, Hengjin Zhang, Weidong Miao, Ming Zhu, "Characterization of high damping TiNi shape memory alloy", Proc. SPIE 8409, Third International Conference on Smart Materials and Nanotechnology in Engineering, 84093A (12 April 2012); doi: 10.1117/12.923628; https://doi.org/10.1117/12.923628
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