Analysis for post-impact tensile-tensile fatigue damage of 2024-T3 sheets based on tests, digital image correlation (DIC) technique and finite element simulation
Source abstract
Abstract
Abstract In order to investigate the effect of low velocity impact damage on fatigue performance of aluminum alloy 2024-T3 thin sheets used in the airframe, the digital image correlation (DIC) analysis was conducted to evaluate fatigue failure of specimens containing various impact damages induced by hemispherical and U-shaped inserts. 2D and 3D strain fields calculated from digital speckle images were applied to analyze the fatigue crack nucleation and propagation. The effects of impact energy, dent dimension and insert shape on the fatigue life are discussed according to the experimental data which could be fitted to a 2-order empirical equation. Fatigue crack nucleation is intensively dominated by the dent geometry resulting from the impact process, the crack initiated around the dent propagates by a combined failure mode of I and III under dynamic loading. The dent could redistribute the strain field on the surface of dented specimens through DIC nephogram analysis. In addition, the simulation based on ABAQUS/Explicit could provide a reliable strain field distributed on the concave surface of dented specimens, while the fatigue life prediction acquired from Fe-safe shows close agreement with experimental data, which could be further used in fatigue life evaluation of impacted components.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Optical measurement and interference techniques · Fatigue and fracture mechanics · Industrial Vision Systems and Defect Detection
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (33)
Show source-provided references
1. Prediction of solidification cracking in pulsed laser welding of 2024 aluminum alloy10.1016/j.actamat.2014.09.002 ↗
2. Effects of two stage aging on the dimensional stability of Al-Cu-Mg alloy10.1016/j.jallcom.2017.01.139 ↗
3. SPH-Lagrangian study of bird impact on leading edge wing10.1016/j.compstruct.2010.10.001 ↗
4. Modelling of bird strike on an aircraft wing leading edge made from fibre metal laminates – Part 2: modelling of impact with SPH bird model10.1023/B:ACMA.0000037134.93410.c0 ↗
5. Experimental study on the effect of dents induced by impact on the fatigue life of 2024–T3 aluminum alloy plate10.1016/j.engstruct.2017.01.048 ↗
6. Evaluating the influence of residual stresses and surface damage on fatigue life of nickel superalloys10.1016/j.ijfatigue.2017.08.015 ↗
7. Experimental study of the impact of punching operations on the high cycle fatigue strength of Fe–Si thin sheets10.1016/j.ijfatigue.2015.09.030 ↗
8. High cycle fatigue behavior of Ti-6Al-4V with simulated foreign object damage10.1016/S0167-6636(01)00084-9 ↗
9. Foreign object damage on the leading edge of gas turbine blades10.1016/j.ast.2014.01.001 ↗
10. Influence of foreign object damage (FOD) on the fatigue life of simulated Ti-6Al-4V airfoils10.1016/S0734-743X(00)00044-0 ↗
11. Influence of foreign-object damage on crack initiation and early crack growth during high-cycle fatigue of Ti–6Al–4V10.1016/S0013-7944(00)00045-X ↗
12. Fatigue life calculation for a specimen with an impact pit considering impact damage, residual stress relaxation and elastic-plastic fatigue damage10.1016/j.ijfatigue.2016.11.036 ↗
13. Guijt C, Hill D, Rausch J, Fawaz S. The effect of dents in fuselage structures on fatigue and static stability. In: International committee on aeronautical fatigue (ICAF) conference, Hamburg, Germany; 2005.
14. Shivalli · 2006
15. Sutton · 2009
16. 3D digital image correlation measurements during shaping of a non-crimp 3D orthogonal woven E-glass reinforcement10.1007/s12289-013-1139-6 ↗
17. A technique for coupled thermomechanical response measurement using infrared thermography and digital image correlation (tdic)10.1007/s11340-015-0086-1 ↗
18. Determination of creep compliance, recovery and Poisson's ratio of elastomers by means of digital image correlation (DIC)10.1016/j.polymertesting.2017.02.010 ↗
19. Experimental methodology for studying strain heterogeneity with microstructural data from high temperature deformation10.1007/s11340-014-9926-7 ↗
20. Characterization of the deformation behaviors associated with the serrated flow of a 5456 Al-based alloy using two orthogonal digital image correlation systems10.1016/j.msea.2016.04.003 ↗
21. Analysis of anisotropic damage in forged Al-Cu-Mg-Si alloy based on creep tests, micrographs of fractured specimen and digital image correlations10.1016/j.msea.2015.11.090 ↗
22. Analysis of aluminum sheets with multiple sites damage based on fatigue tests and DIC technique10.1016/j.ijfatigue.2017.12.008 ↗
23. Investigation of fatigue crack propagation mechanisms of branching crack in 2324–T39 aluminum alloy thin plates under cyclic loading spectrum10.1016/j.ijfatigue.2015.09.017 ↗
24. A theory for fatigue failure under multiaxial stress-strain conditions10.1243/PIME_PROC_1973_187_161_02 ↗
25. Thompson SR, Nicholas T, Ruschau JJ, Porter WJ, Buchanan DJ. An investigation into impacting techniques for simulating foreign object damage and their influence on the fatigue limit strength of Ti-6Al-4V. In Evaluation, Control and Prevention of High Cycle Fatigue in Gas Turbine Engines for Land, Sea and Air Vehicles. Neuilly-sur-Seine, France: Research and Technology Organization, 2005; 1-18. Available from: http://www.rto.nato.int/abstracts.asp.
26. Finite element multi-impact simulations using a crystal plasticity law based on dislocation dynamics10.1016/j.ijplas.2017.10.008 ↗
27. Mechanical relaxation of localized residual stresses associated with foreign object damage10.1016/S0921-5093(02)00543-9 ↗
28. Failure of metals Ⅱ: Fatigue10.1016/j.actamat.2015.05.050 ↗
29. Investigation of residual stress relaxation under cyclic load10.1016/S0142-1123(01)00132-3 ↗
30. Influence of impact dents on the fatigue strength of aluminum alloy friction stir welds10.1016/j.proeng.2010.03.182 ↗
31. Jaroslav · 2010
32. Some studies on fatigue crack growth rate of aluminum alloy 606110.1016/j.jmatprotec.2007.11.302 ↗
33. Ralph · 2001