Mechanical Behavior of Super-Elastic Home-Made NiTi Shape Memory Alloy Bar in Tension

Abstract:

An experimental study on mechanical behavior of home-made super-elastic NiTi Shape Memory Alloy (SMA) bar subjected to tension was made. The SMA bar specimen was 8mm in gage diameter and 50mm in gage length. The experimental tests were carried out by applying repeated cyclic loads. The tested tension strain amplitudes were 1%-7% and material phase was austenite. The mechanical characteristic parameters, such as phase transformation stress, deformation module, residual strain, energy loss and equivalent damping were studied. The effects of strain amplitude, loading rate and loading cycles on these parameters were analyzed. The considerable super-elasticity and stable cyclic behaviors of home-made SMA bar during the test showed its great application potential in aseismic devices.

• Periodical: Advanced Materials Research (Volumes 671-674)
• Pages: 1817-1820
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.671-674.1817
• Online since: March 2013
• Authors: Hai Jun Zhou, Hai Feng Liu, Hong Hong Huang
• Keywords: Mechanical Behavior, Shape Memory Alloy Bar, Super-Elasticity, Tension

References

[1] X.B. Zuo, A.Q. Li., L.F. Ni, et al. China Civil Engineering Journal, Vol. 37 (2004), p.10. (In Chinese).

[2] Shang Ze-jin, Wang Zhong-min, Yin Guan-sheng, et al. Rare Metal Materials and Engineering, Vol. 38 (2009), p.460. (In Chinese).

[3] R. Desroches, M.P. Jason, et al. Journal of Structural Engineering-ASCE. Vol. 130 (2004), p.38.

[4] M.P. Jason. Cyclic behavior of shape memory alloys: Material characterization and optimization. Georgia Institute of Technology (2006).

[5] Mauro Dolce, Donatello Cardone: International Journal of Mechanical Sciences Vol. 43(2001), p.2657.