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Proceedings Paper

Fatigue properties of NiTi shape-memory alloy thin plates
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Paper 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.

Paper Details

Date Published: 3 April 2013
PDF: 9 pages
Proc. SPIE 8689, Behavior and Mechanics of Multifunctional Materials and Composites 2013, 86890S (3 April 2013); doi: 10.1117/12.2009857
Show Author Affiliations
Hiroshi Yamamoto, Univ. of Washington (United States)
Minoru Taya, Univ. of Washington (United States)
Yuanchang Liang, Univ. of Washington (United States)
Onur C. Namli, Univ. of Washington (United States)
Makoto Saito, Nabtesco Corp. (Japan)


Published in SPIE Proceedings Vol. 8689:
Behavior and Mechanics of Multifunctional Materials and Composites 2013
Nakhiah C. Goulbourne; Hani E. Naguib, Editor(s)

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