Title: Continuum damage analysis, experimental and simulation for investigating the fatigue life performance of 316L steel at high temperatures

Authors: M.A. Khairul; S.M. Sapuan; Faris M. AL-Oqla; E.S. Zainudin; M.M. Rababah

Addresses: Department of Mechanical and Manufacturing Engineering, Universiti Putra Malaysia, 43400 UPM, Serdang Selangor, Malaysia ' Department of Mechanical and Manufacturing Engineering, Universiti Putra Malaysia, 43400 UPM, Serdang Selangor, Malaysia; Institute of Tropical Forestry and Forest Products (INTROP), Universiti Putra Malaysia, 43400 UPM Serdang Selangor, Malaysia ' Department of Mechanical Engineering, The Hashemite University, Zarqa 13133, Jordan ' Department of Mechanical and Manufacturing Engineering, Universiti Putra Malaysia, 43400 UPM, Serdang Selangor, Malaysia ' Department of Mechanical Engineering, The Hashemite University, Zarqa 13133, Jordan

Abstract: This work investigates and predicts the fatigue life of 316L stainless steel materials under variable cyclic loading at high elevated temperatures utilising the continuum damage mechanics analysis (CDM). This work is validated experimentally for 316L stainless steel specimens subjected to continuous cyclic loading as well as to hold-time cyclic loading at both room and elevated temperatures where creep plays a significant role. Moreover, this work was carried out in order to examine and investigate the materials' parameters and to obtain improved materials with longer lives. Results obtained from continuous cyclic loading and those exposed to hold-time cyclic loading during the fatigue tests show notable variations in their trend curves. Moreover, this work was capable of developing an approach to predict the fatigue life of such materials at elevated temperatures. A comprehensive understanding of the fatigue behaviour of tubular steel is also developed to enhance safer design possibilities.

Keywords: steel fracture; fatigue performance; creep; dwell time; earthquakes; material modelling.

DOI: 10.1504/IJMSI.2017.089667

International Journal of Materials and Structural Integrity, 2017 Vol.11 No.4, pp.175 - 192

Received: 03 Jun 2016
Accepted: 05 Oct 2017
Published online: 05 Feb 2018 *

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