Retardation effects due to overloads in aluminium-alloy aeronautical components
Journal article
| Authors | Maligno, Angelo, Citarella, Roberto and Silberschmidt, Vadim V. |
|---|---|
| Abstract | Fatigue data are generally derived under constant-amplitude loading conditions, but aircraft components are subjected to variable-amplitude loading. Without interaction effects, caused by overloads and underloads intermingled in a loading sequence, it could be relatively easy to establish a crack growth curve by means of a cycle-by-cycle integration. However, load-spectrum effects largely complicate a crack growth under variable-amplitude cycling. In this paper, fatigue crack growth behaviour of aeronautical aluminium alloy 2024-T3 was studied. Effects of various loading conditions such as stress ratio and amplitude loadings were investigated. In particular, the effect of different overloads on the fatigue crack growth was simulated using Zencrack code. Preliminary analyses on Compact Tension (CT) specimens proved that the numerical results generated were in agreement with the results provided by an afgrow code for the same conditions. A case study was carried out on a helicopter component, undergoing repeated overloads, to compare numerical results obtained implementing yield zone models in Zencrack. |
| Keywords | Fatigue crack propagation; Load spectrum effects; Yield zone; Finite element modelling |
| Year | 2017 |
| Journal | Fatigue & Fracture of Engineering Materials & Structures |
| Publisher | Wiley |
| ISSN | 8756758X |
| Digital Object Identifier (DOI) | https://doi.org/10.1111/ffe.12591 |
| Web address (URL) | http://hdl.handle.net/10545/621555 |
| hdl:10545/621555 | |
| Publication dates | 08 Feb 2017 |
| Publication process dates | |
| Deposited | 19 Apr 2017, 14:52 |
| Accepted | 18 Jan 2017 |
| Rights | Archived with thanks to Fatigue & Fracture of Engineering Materials & Structures |
| Contributors | University of Derby, University of Salerno, University of Loughborough, Institute for Innovation in Sustainable Engineering; University of Derby; Quaker Way, Derby DE1 3HD UK, Department of Industrial Engineering; University of Salerno; via Giovanni Paolo II, Fisciano SA Italy and Wolfson School of Mechanical and Manufacturing Engineering; Loughborough University; Loughborough UK |
| File | File Access Level Open |
| File |
https://repository.derby.ac.uk/item/94q1q/retardation-effects-due-to-overloads-in-aluminium-alloy-aeronautical-components
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