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Crack path and regularities for ball-bearing fracture in the very high cycle fatigue regime
  • Andrey Shanyavskiy,
  • Aleksey Soldatenkov
Andrey Shanyavskiy
Aviation Register for the Russian Federation Airport Sheremetievo-1 PO Box 54 Moscow region Chimkinskiy State 141426 Russia

Corresponding Author:[email protected]

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Aleksey Soldatenkov
Aviation Register for the Russian Federation Airport Sheremetievo-1 PO Box 54 Moscow region Chimkinskiy State 141426 Russia
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Abstract

The process of fatigue spalling in the rings of ball bearings at durability exceeding 10 8 cycles under in-service loading conditions is analyzed on the basis of fractography and the slices prepared in radial planes of rings. The cracks are shown to originate at subsurface from carbides inherent in the bearing steel or inclusions permissible by sizes for the material. Subsequently, the development of cracks perpendicular to the ring raceway surface takes place similarly as in the VHCF regime with the elliptical “fish-eye” formation. The subsequent crack growth was demonstrated step-by-step up to the ring material fragment separation. The total crack path by alternating stops of propagation and new crack nucleation under conditions of mixed-mode I+II+III mechanisms with the crack branching was discussed. In the final stage, the crack grows towards the ring raceway and either appears on the raceway surface or coalesce with a similar adjacent crack followed by fatigue spalling formation.
28 Feb 2022Submitted to Fatigue & Fracture of Engineering Materials & Structures
28 Feb 2022Submission Checks Completed
28 Feb 2022Assigned to Editor
03 Mar 2022Reviewer(s) Assigned
03 Apr 2022Review(s) Completed, Editorial Evaluation Pending
04 Apr 2022Editorial Decision: Revise Major
13 May 20221st Revision Received
13 May 2022Submission Checks Completed
13 May 2022Assigned to Editor
20 May 2022Reviewer(s) Assigned
20 Jun 2022Review(s) Completed, Editorial Evaluation Pending
21 Jun 2022Editorial Decision: Accept
03 Jul 2022Published in Fatigue & Fracture of Engineering Materials & Structures. 10.1111/ffe.13782