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FRETTING-FATIGUE ANALYSIS OF SHOT-PEENED ALUMINIUM AND TITANIUM TEST SPECIMENS
  • Sabrina Vantadori,
  • Andrea Zanichelli
Sabrina Vantadori
University of Parma
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Andrea Zanichelli
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Abstract

In last decades, many alleviation measures were proposed in order to improve the life of fretting fatigue affected components. The aim of such palliatives is that to counteract the high stress gradients that arise near the contact surface. In such a context, the shot peening treatment is worth noting. Therefore, in the present paper, the fatigue life of shot-peened aluminium and titanium alloy specimens, subject to fretting fatigue under partial slip regime, is assessed by means of the Carpinteri et al. criterion for fretting fatigue. Firstly, according to the superposition principle, the relaxed residual stresses (due to the shot peening treatment) are combined with the stress components due to fretting fatigue loading. Then fretting fatigue assessment is performed. In such a context, a novel theoretical law for the relaxed residual stress field is here proposed, the implementation of which shows very promising results in terms of fatigue life estimation of the shot-peened specimens examined.

Peer review status:UNDER REVIEW

07 Aug 2020Submitted to Fatigue & Fracture of Engineering Materials & Structures
07 Aug 2020Submission Checks Completed
07 Aug 2020Assigned to Editor
07 Aug 2020Reviewer(s) Assigned
28 Aug 2020Review(s) Completed, Editorial Evaluation Pending
20 Sep 2020Editorial Decision: Revise Major
24 Sep 20201st Revision Received
25 Sep 2020Submission Checks Completed
25 Sep 2020Assigned to Editor
25 Sep 2020Reviewer(s) Assigned