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Foundation of damage tolerance principles in-service for the RRJ-95 aircraft structural components
  • Andrey Shanyavskiy,
  • Aleksey Soldatenkov,
  • Alexandr Toushentsov
Andrey Shanyavskiy
Aviation Register of the Russian Federation
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Aleksey Soldatenkov
Aviation Register of the Russian Federation
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Alexandr Toushentsov
Aviation Register of the Russian Federation
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Abstract

Fatigue cracks initiated from holes in several zones and structural components of the RRJ-95 aircraft frames were investigated. Using the method of quantitative fractography the crack growth duration in the brackets of the in-service airframe and in the wing panels during full-scale bench tests was estimated the spacing of meso-beach-marks (MBM) and fatigue striations. The applied program of bench test consisted of blocks of variable loads that were equivalent to the wing loading in flight and reproducing schematized flight-cycle. It was shown that the duration of fatigue crack propagation in several structural components of the RRJ-95 aircraft frames was approximately the same as for the crack nucleation duration. The total lifetime is sufficiently long for cracks in the structural components to be detected and reliably monitored with a large operating time interval between adjacent inspections.

Peer review status:ACCEPTED

30 Oct 2020Submitted to Fatigue & Fracture of Engineering Materials & Structures
30 Oct 2020Submission Checks Completed
30 Oct 2020Assigned to Editor
02 Nov 2020Reviewer(s) Assigned
21 Nov 2020Review(s) Completed, Editorial Evaluation Pending
04 Dec 2020Editorial Decision: Revise Major
10 Feb 20211st Revision Received
16 Feb 2021Assigned to Editor
16 Feb 2021Submission Checks Completed
16 Feb 2021Reviewer(s) Assigned
22 Feb 2021Review(s) Completed, Editorial Evaluation Pending
03 Mar 2021Editorial Decision: Revise Major
29 Mar 20212nd Revision Received
29 Mar 2021Submission Checks Completed
29 Mar 2021Assigned to Editor
29 Mar 2021Reviewer(s) Assigned
29 Mar 2021Review(s) Completed, Editorial Evaluation Pending
08 Apr 2021Editorial Decision: Accept