Hits:

Indexed by:Journal Papers

Date of Publication:2015-11-01

Journal:INTERNATIONAL JOURNAL OF FATIGUE

Included Journals:SCIE、EI、Scopus

Volume:80

Page Number:136-144

ISSN No.:0142-1123

Key Words:High-cycle fatigue; Intrinsic dissipation; Temperature variation; Damage mechanism

Abstract:The present paper, firstly, establishes a calculation model of intrinsic dissipation, based on the double exponential regression for the one-dimensional distribution of specimen surface temperature variation. Then, an energy method is proposed for rapid evaluation of high-cycle fatigue parameters (i.e., fatigue limit and S-N curve). The energy method takes intrinsic dissipation as the fatigue damage indicator, and eliminates the interference of internal friction causing no damage on fatigue life evaluation. An experimental research on FV520B stainless steel was performed, in order to verify the feasibility and validity of the energy method, as well as the calculation model. (C) 2015 Elsevier Ltd. All rights reserved.