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Comparison of Bending Fatigue of NiTi and CuAlMn Shape Memory Alloy Bars
Joint Authors
Zhu, Y. Z.
Huang, H.
Chang, Wen-Shao
Source
Advances in Materials Science and Engineering
Issue
Vol. 2020, Issue 2020 (31 Dec. 2020), pp.1-9, 9 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2020-01-14
Country of Publication
Egypt
No. of Pages
9
Abstract EN
The behaviour under cyclic bending and in particular the fatigue properties of shape memory alloy (SMA) bars are important for civil engineering applications.
In this paper, structural and functional fatigue is studied for both NiTi- and copper-based shape memory alloys.
The results are presented from cyclic bending tests on 7 mm diameter NiTi and 12 mm diameter CuAlMn SMA bars targeted at 100,000 cycles.
During the tests, dynamic loading at 1 Hz, 5 Hz, and 8 Hz was applied for different strain levels (0.5%, 1%, 2%, and 6%).
The stress-strain curve, damping ratio, and secant stiffness were analysed for material characterisation, and the evolution of these parameters was studied to assess functional fatigue.
The fatigue life is extended dramatically when the strain is below 1%, and the structural fatigue life of CuAlMn is shown to be better than that of NiTi and to depend on the loading rate.
However, decay in stiffness can be found in the CuAlMn SMA, which is considered to be caused particularly by its long grain boundary.
American Psychological Association (APA)
Huang, H.& Zhu, Y. Z.& Chang, Wen-Shao. 2020. Comparison of Bending Fatigue of NiTi and CuAlMn Shape Memory Alloy Bars. Advances in Materials Science and Engineering،Vol. 2020, no. 2020, pp.1-9.
https://search.emarefa.net/detail/BIM-1129210
Modern Language Association (MLA)
Huang, H.…[et al.]. Comparison of Bending Fatigue of NiTi and CuAlMn Shape Memory Alloy Bars. Advances in Materials Science and Engineering No. 2020 (2020), pp.1-9.
https://search.emarefa.net/detail/BIM-1129210
American Medical Association (AMA)
Huang, H.& Zhu, Y. Z.& Chang, Wen-Shao. Comparison of Bending Fatigue of NiTi and CuAlMn Shape Memory Alloy Bars. Advances in Materials Science and Engineering. 2020. Vol. 2020, no. 2020, pp.1-9.
https://search.emarefa.net/detail/BIM-1129210
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1129210