Verification of the Computed Tomography Results of Aluminum Alloy Welded Joint

Malicki, Maciej; Sobczak, Kamil

doi:10.2478/fas-2018-0004

Cited by 2 publications

(1 citation statement)

References 4 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The calibration of the system and its construction give the possibility to measure porosity. The conditions of measurements consist of minimal voxel side equal to 26 µm, a sample size of 45 mm × 15 mm, an image width of 690 pixels, scanning with 1000 images and 360° per sample, a voltage of 90 kV, a current of 220 µA, and an exposure time of 200 ms [ 47 ].…”

Section: Methodsmentioning

confidence: 99%

Characterization of 5356 Aluminum Walls Produced by Wire Arc Additive Manufacturing (WAAM)

et al. 2023

View full text Add to dashboard Cite

Wire arc additive manufacturing (WAAM) is renowned for its high deposition rate, enabling the production of large parts. However, the process has challenges such as porosity formation, residual stresses, and cracking when manufacturing aluminum parts. This study focuses on ana-lyzing the porosity of AA5356 walls manufactured using the WAAM process with the Fronius cold metal transfer system (Wels, Austria). The walls were machined to obtain specimens for tensile testing. The study used computed tomography and the tensile test to analyze the specimens’ porosity and its potential relation to tensile strength. The process parameters analyzed were travel speed, cooling time, and path strategy. In conclusion, increasing travel speed and cooling time significantly affects pore diameter due to the lower heat input to the weld zone. Porosity can be reduced when diminishing heat accumulation. The results indicate that an increase in travel speed produces a slight decrease in porosity. Specifically, the total pore volume diminishes from 0.42 to 0.36 mm3 when increasing the travel speed from 700 to 950 mm/min. The ultimate tensile strength and maximum elongation of the ‘back and forth’ strategy are slightly higher than those of the ‘go’ strategy. After tensile testing, the ultimate tensile strength and yield strength did not show any relation to the porosity measured by computed tomography. The percentage of the pore total volume over the measured volume was lower than 0.12% for all the scanned specimens.

show abstract

Section: Methodsmentioning

confidence: 99%

Characterization of 5356 Aluminum Walls Produced by Wire Arc Additive Manufacturing (WAAM)

et al. 2023

View full text Add to dashboard Cite

show abstract

Mechanical Properties of Double-Layer Riveted Aluminum Roofing Panels with Curved Surfaces

Yao

Zhang

Luo

et al. 2023

Metals

View full text Add to dashboard Cite

In recent years, aluminum alloy has been increasingly used in building structures, becoming an important construction material for metal structures. Currently, aluminum alloy is commonly used in buildings as beam–column components, profiled roof panels, and door and window frames, among other forms. However, there is limited research on the mechanical properties of aluminum alloy roof panels with irregular curved surfaces. In this study, a full-scale curved double-layer anisotropic riveted aluminum alloy roof panel was subjected to a load test to analyze its deformation patterns and failure mechanisms. The results indicate that the load-bearing capacity of the roof panel meets the design requirements. During failure, neither the upper nor lower layers of the panel enter the plastic deformation stage, indicating sufficient safety redundancy. The failure mode observed is a ductile failure with noticeable deformation with the weak points of the component being the riveted connections of the stiffeners. A finite element model was established for numerical simulation and the results matched well with the experimental data. Finally, a theoretical calculation for the ultimate load-bearing capacity of the roof panel was derived, providing a reference for design purposes.

show abstract

Verification of the Computed Tomography Results of Aluminum Alloy Welded Joint

Abstract: Computed tomography (CT) of aluminum welded joint specimen has been performed. On the tomographic cross sections some defects have been found. To verify them the metallography cross sections of welded has been done. It was found that selected defects are micro cracks.

Cited by 2 publications

References 4 publications

Characterization of 5356 Aluminum Walls Produced by Wire Arc Additive Manufacturing (WAAM)

Characterization of 5356 Aluminum Walls Produced by Wire Arc Additive Manufacturing (WAAM)

Mechanical Properties of Double-Layer Riveted Aluminum Roofing Panels with Curved Surfaces

Contact Info

Product

Resources

About