Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Improved shape memory composites combined with TiNi wire and shape memory epoxy
Highlight The stiffness decrease of shape memory epoxy at elevated temperature has been compensated by adding TiNi wires. The maximum recovery stress of composites is 4.04MPa, which is almost 3 times of matrix. The rates of shape fixity and shape recovery of 1vol% composite with 8% pre-strain are close to 100%.
Abstract In order to develop high functionality of shape memory materials, the shape memory composites combined with TiNi wire and shape memory epoxy were fabricated, and the mechanical and thermomechanical properties were studied. The results showed that TiNi wire can compensate for the stiffness decrease of SMPs at elevated temperature, and the strength of interface and strength of interface matrix were important to further increase elevated temperature mechanical properties. The recovery stress of composites could be adjusted by changing the pre-strain, and the maximum recovery stress was obtained at 8% which was TiNi wire maximum recoverable strain. The addition of 1vol% TiNi wire could increase the maximum recovery stress from 1.36MPa to 4.04MPa, which was almost 3 times of the matrix and at the same time maintained the rates of shape fixity and shape recovery close to 100%.
Improved shape memory composites combined with TiNi wire and shape memory epoxy
Highlight The stiffness decrease of shape memory epoxy at elevated temperature has been compensated by adding TiNi wires. The maximum recovery stress of composites is 4.04MPa, which is almost 3 times of matrix. The rates of shape fixity and shape recovery of 1vol% composite with 8% pre-strain are close to 100%.
Abstract In order to develop high functionality of shape memory materials, the shape memory composites combined with TiNi wire and shape memory epoxy were fabricated, and the mechanical and thermomechanical properties were studied. The results showed that TiNi wire can compensate for the stiffness decrease of SMPs at elevated temperature, and the strength of interface and strength of interface matrix were important to further increase elevated temperature mechanical properties. The recovery stress of composites could be adjusted by changing the pre-strain, and the maximum recovery stress was obtained at 8% which was TiNi wire maximum recoverable strain. The addition of 1vol% TiNi wire could increase the maximum recovery stress from 1.36MPa to 4.04MPa, which was almost 3 times of the matrix and at the same time maintained the rates of shape fixity and shape recovery close to 100%.
Improved shape memory composites combined with TiNi wire and shape memory epoxy
Feng, Xue (Autor:in) / Zhao, Limin (Autor:in) / Mi, Xujun (Autor:in) / Li, Yanfeng (Autor:in) / Xie, Haofeng (Autor:in) / Yin, Xiangqian (Autor:in) / Gao, Baodong (Autor:in)
15.03.2013
4 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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