Experimental Investigation of Mechanical Properties of Nitinol, Structural Steel, and Their Hybrid Component
Publication: Journal of Materials in Civil Engineering
Volume 25, Issue 10
Abstract
Usage of special materials with unique properties in seismic resistant structures has increased to overcome their limited energy dissipation and ductility as a result of the 1994 Northridge earthquake. Among them, shape memory alloy (SMA) is a unique metallic alloy that has the ability to undergo large deformation while reverting back to its original undeformed shape; but because any new technology has its pros and cons together, using SMA in structures is not all benefit. In this paper, advantages and disadvantages of using shape memory alloys in structures are studied according to experimental results. Monotonic and cyclic static loading tests on Nitinol and steel bars are conducted to obtain their mechanical properties in tension and compression. Also, a comparative low-cycle fatigue test is conducted using steel and Nitinol samples. Considering the results, a simple and practical solution is developed to overcome some of the deficiencies of these two materials in seismic resisting structures.
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Acknowledgments
Financial support by the Iranian National Science Foundation (INSF) Grant No. INSF-8900070 is gratefully acknowledged.
References
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Published In
Journal of Materials in Civil Engineering
Volume 25 • Issue 10 • October 2013
Pages: 1498 - 1505
Copyright
© 2013 American Society of Civil Engineers.
History
Received: May 8, 2012
Accepted: Sep 27, 2012
Published online: Oct 1, 2012
Discussion open until: Mar 1, 2013
Published in print: Oct 1, 2013
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