Fatigue properties of NiTi shape-memory alloy thin plates

Hiroshi Yamamoto; Minoru Taya; Yuanchang Liang; Onur C. Namli; Makoto Saito

doi:10.1117/12.2009857

3 April 2013 Fatigue properties of NiTi shape-memory alloy thin plates

Hiroshi Yamamoto, Minoru Taya, Yuanchang Liang, Onur C. Namli, Makoto Saito

Proceedings Volume 8689, Behavior and Mechanics of Multifunctional Materials and Composites 2013; 86890S (2013) https://doi.org/10.1117/12.2009857
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2013, San Diego, California, United States

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.

Citation Download Citation

Hiroshi Yamamoto, Minoru Taya, Yuanchang Liang, Onur C. Namli, and 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); https://doi.org/10.1117/12.2009857

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