3 April 2013 Fatigue properties of NiTi shape-memory alloy thin plates
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Abstract
The mechanical and fatigue characteristics of superelastic NiTi thin plates in the large strain area were obtained by tensile and pulsating 4-point bending tests to establish the design guidelines for the ferromagnetic shape memory alloy (FSMA) composite actuator and its fatigue life. The stress-strain curves of NiTi thin plates were found to be strain rate dependent. The finite element analysis (FEA) result using the stress-strain curve measured by tensile test is in good agreement with the experimental results of the 4-point bending tests. The relationship between the maximum bending strain and the number of cycles to failure in pulsating 4-point bending fatigue tests was obtained as well as an analysis of the fatigue fracture surfaces of NiTi thin plates.
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Hiroshi Yamamoto, Minoru Taya, Yuanchang Liang, Onur C. Namli, Makoto Saito, "Fatigue properties of NiTi shape-memory alloy thin plates", Proc. SPIE 8689, Behavior and Mechanics of Multifunctional Materials and Composites 2013, 86890S (3 April 2013); doi: 10.1117/12.2009857; https://doi.org/10.1117/12.2009857
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