Fatigue behaviour of laser machined 2024 T3 aeronautic aluminium alloy

Carpio, F

doi:10.1016/s0169-4332(02)01369-7

Cited by 37 publications

(8 citation statements)

References 7 publications

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“…11 Apart from the commercial cutting head, a novel supersonic cutting head, designed, built, and optimized in our laboratory was also used. Argon was used as assist gas varying its pressure between 3 and 8 bar in order to study the influence of the assist pressure on the cut quality.…”

Section: Methodsmentioning

confidence: 99%

Laser cutting of 2024-T3 aeronautic aluminum alloy

Riveiro

Quintero

Lusquiños

et al. 2008

Journal of Laser Applications

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Articles you may be interested inThermal stress distributions and microstructure in laser cutting of thin Al-Si alloy sheet J. Laser Appl. 25, 042006 (2013); 10.2351/1.4807081 Spatial analysis of the back reflected laser light during CO2-laser cutting of metal sheets J. Laser Appl. 25, 012001 (2013); 10.2351/1.4765818Comprehensive assessment of the C O 2 laser cut quality of ceramics with different assist gas injection systems Since the beginning of the aeronautic industry, aluminum alloys have played a crucial role in its development. Nowadays, different aluminum alloy families are the base material of many pieces of aerospace vehicles. In this work, a novel approach to process aluminum alloys is explored. The authors efforts are aimed to cut 2024-T3 plates by a CO 2 laser. They used a novel laser cutting head assisted by a gas jet working in supersonic regime in order to accomplish this objective. This supersonic nozzle and the intrinsic geometry of the cutting head allow carrying out the processing of these alloys more efficiently than conventional cutting heads. The microstructural characterization, grain morphology, kerf dimensions, and surface finish of the cuts have been analyzed. The cut edges are free of dross and cracks and the heat affected zone is negligible. These successful results confirm laser cutting processing assisted by a supersonic assisting gas jet as a promising technique in the aerospace field.

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Section: Methodsmentioning

confidence: 99%

Laser cutting of 2024-T3 aeronautic aluminum alloy

Riveiro

Quintero

Lusquiños

et al. 2008

Journal of Laser Applications

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“…Among the different considered properties in the surface integrity, fatigue behavior takes special importance in the aeronautical industry due to safety reasons. Microcrack generation, nucleation and crack growth affect the in-service behavior of this type of structural component [16]. Therefore, fatigue behavior usually has a high dependence on the surface quality [17].…”

Section: Introductionmentioning

confidence: 99%

Fatigue Behavior Parametric Analysis of Dry Machined UNS A97075 Aluminum Alloy

Martín-Béjar

Vilches

Gamboa

et al. 2020

Metals

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Fatigue behavior takes special relevance in structural parts for aircraft due to safety reasons. Despite its environmental advantages, dry machining of these parts may negatively affect their surface integrity, which may lead to a reduction in fatigue life. Nevertheless, there is a lack of research focused on the analysis of the cutting parameters influence on fatigue behavior in dry machining of aeronautical aluminum alloys, in spite of its importance. Therefore, in this work, an analysis of the cutting speed and feed influence on fatigue behavior of dry turned UNS A97075-T6 alloy is presented. The stress-fatigue life curves have been obtained and corrected according to the applied cutting parameters values. Additionally, the surface roughness and two macro-geometrical deviations (cylindricity and concentricity) have been controlled. The experimental results have revealed that fatigue life is reduced when high values of cutting speed and feed are combined. Finally, a parametric potential equation for fatigue life, as a function of the load and the cutting parameters, has been developed. The relation has been obtained for the theoretical fracture section and, as the main novelty, corrected for the real one.

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“…19 Consequently, the shock wave results in high compressive residual stress due to severe plastic deformation, which has been reported to significantly increase the fatigue life of materials used in a wide range of industries. [26][27][28][29][30] Similarly, in laser-assisted direct-write, a high power laser pulse directly interacts with a thin layer of material. 17,[31][32][33] Laser direct-write allows precise control of material properties with high resolution and complex structure with relative easiness.…”

Section: Scalable Patterning Using Laser-induced Shock Waves 1 Introdmentioning

confidence: 99%

Scalable patterning using laser-induced shock waves

Ilhom

Kholikov

et al. 2018

Opt. Eng.

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An advanced direct imprinting method with low cost, quick, and minimal environmental impact to create a thermally controllable surface pattern using the laser pulses is reported. Patterned microindents were generated on Ni 50 Ti 50 shape memory alloys and aluminum using an Nd: YAG laser operating at 1064 nm combined with a suitable transparent overlay, a sacrificial layer of graphite, and copper grid. Laser pulses at different energy densities, which generate pressure pulses up to a few GPa on the surface, were focused through the confinement medium, ablating the copper grid to create plasma and transferring the grid pattern onto the surface. Scanning electron microscope and optical microscope images show that various patterns were obtained on the surface with high fidelity. One-dimensional profile analysis indicates that the depth of the patterned sample initially increases with the laser energy and later levels off. Our simulations of laser irradiation process also confirm that high temperature and high pressure could be generated when the laser energy density of 2 J∕cm 2 is used.

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Fatigue behaviour of laser machined 2024 T3 aeronautic aluminium alloy

Cited by 37 publications

References 7 publications

Laser cutting of 2024-T3 aeronautic aluminum alloy

Laser cutting of 2024-T3 aeronautic aluminum alloy

Fatigue Behavior Parametric Analysis of Dry Machined UNS A97075 Aluminum Alloy

Scalable patterning using laser-induced shock waves

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