Effect of intermittent overload cycles on thermomechanical fatigue life of NiTi shape memory alloy wire

Saikrishna, CN and Ramaiah, KV and Vidyashankar, B and Bhaumik, SK (2013) Effect of intermittent overload cycles on thermomechanical fatigue life of NiTi shape memory alloy wire. Metallurgical and Materials Transactions A, 44A. C5-8. ISSN 1073-5623

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Official URL: http://dx.doi.org/10.1007/s11661-012-1557-y

Abstract

Effect of intermittent overload cycles on fatigue behavior of NiTi shape memory alloy wire during thermomechanical cycling (TMC) has been evaluated. Results showed that fatigue life of NiTi is enhanced when the intermittent overload is above certain minimum level. An enhancement in fatigue life by ~50 pct is observed when the overload ratio is 2.0. Accumulation of plastic strain in the material under such TMC condition is found to be relatively high compared to that of TMC with no overload cycles.

Item Type: Article
Additional Information: Copyright to this article belongs to M/s. Minerals, Metals & Materials Society and ASM International
Uncontrolled Keywords: Thermomechanical fatigue;Shape memory alloy wire;Thermomechanical cycling;Thermal actuation
Subjects: AERONAUTICS > Aeronautics (General)
CHEMISTRY AND MATERIALS > Chemistry and Materials (General)
Depositing User: Ms. Alphones Mary
Date Deposited: 08 May 2014 07:51
Last Modified: 08 May 2014 07:51
URI: http://nal-ir.nal.res.in/id/eprint/11953

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