Low Cycle and Ratchetting Fatigue Behavior of High UTS/YS Ratio Reinforcing Steel Bars

Bar, H N and Sivaprasad, S and Narasaiah, N and Paul, S K and Sen, B N and Chandra, Sanjay (2013) Low Cycle and Ratchetting Fatigue Behavior of High UTS/YS Ratio Reinforcing Steel Bars. Journal of Materials Engineering and Performance, 22(6) (IF- 0.92). pp. 1701-1707.

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Official URL/DOI: DOI:10.1007/s11665-013-0470-x

Abstract

Cyclic deformation behavior of high UTS/YS rebars has been studied employing both symmetric strain-controlled and asymmetric stress-controlled cycles in an attempt to understand the influence of UTS/YS ratio on fatigue life. While strain-controlled cyclic deformation did not exhibit a pronounced influence of UTS/YS ratio, a substantial life enhancement is noted for the asymmetric stress-controlled cyclic. Reasons for life enhancement were found to be due to the ratchetting strain development and the associated hardening behavior. An equivalent stress-based model has been used to predict both the symmetric and asymmetric fatigue lives of rebars.

Item Type: Article
Uncontrolled Keywords: LCF; ratchetting; rebar; stress-based model
Subjects: Materials Science
Divisions: Material Science and Technology
Depositing User: Dr. A K Sahu
Date Deposited: 25 Jun 2013 02:56
Last Modified: 27 Dec 2013 12:30
URI: http://eprints.nmlindia.org/id/eprint/6648

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