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A Stress Intensity Function for FCG Analyses in Metals
  • Daniel Kujawski
Daniel Kujawski
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Abstract

This paper presents a damaging stress intensity function Kd for analyses of R-ratio effects on fatigue crack growth (FCG) in metals. The proposed formulation is based on the sum of strain and complementary energy and its role in FCG rate behavior in threshold and Paris region at R-ratios ranging from -2 to 0.97. It doesn’t invoke a crack closure assumption or fitting parameters for R<0.5-0.6. For a high R>0.7 it utilizes an experimentally determine correction factor, which accounts for excessive plastic dissipation in the monotonic plastic zone (MPZ).

Peer review status:UNDER REVIEW

25 Feb 2021Submitted to Fatigue & Fracture of Engineering Materials & Structures
25 Feb 2021Submission Checks Completed
25 Feb 2021Assigned to Editor
03 Mar 2021Reviewer(s) Assigned
24 May 2021Review(s) Completed, Editorial Evaluation Pending
26 May 2021Editorial Decision: Revise Major
03 Jun 20211st Revision Received
04 Jun 2021Submission Checks Completed
04 Jun 2021Assigned to Editor
08 Jun 2021Reviewer(s) Assigned