Parameter Selection for Wire Arc Additive Manufacturing (WAAM) Process

Wahsh, L.; Azzam, M.; Turky, M.; Salem, H.; Hamdy, F.; Mansour, A.; ElShater, A.

doi:10.7449/2018mst/2018/mst_2018_78_85

Cited by 6 publications

(1 citation statement)

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“…The use of a pulsed current in WAAM results in the melting efficiency within the deposition droplets and a reduced degree of deformation (Wahsh et al , 2018). Better arc stability, bead geometry and melting rate can result from the optimized selection of pulse parameters.…”

Section: Introductionmentioning

confidence: 99%

Experimental verification of computational and sensitivity analysis on substrate deformation and plastic strain induced by hollow thin-walled WAAM structure

Prajadhiana

Manurung

Bauer

et al. 2021

RPJ

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Purpose This paper aims to numerical and experimental analysis on substrate deformation and plastic strain induced by wire arc additive manufacturing. Design/methodology/approach The component has the form of a hollow, rectangular thin wall consisting of 25 deposition layers of SS316L on an SS304 substrate plate. Thermo-mechanical finite element analysis was applied with Goldak’s double-ellipsoidal heat-source model and a non-linear isotropic hardening rule based on von Mises’ yield criterion. The layer deposition was modelled using simplified geometry to minimize overall pre-processing work and computational time. Findings A new material modelling of SS316L was obtained from the chemical composition of the evolved component characterized by scanning electron microscope/energy dispersive X-ray and further generated by an advanced material-modelling software JMatPro. In defining heat-transfer coefficients, transient thermometric analysis was first performed in the bead and on the substrate, which was followed by an adjustment of the heat-transfer coefficients to reflect the actual temperature distribution. Based on the adjusted model and boundary conditions, sensitivity analysis was conducted prior to the ultimate simulation of substrate deformation and equivalent plastic strain. Furthermore, this simulation was verified by conducting a series of automated wire + arc additive manufacturing tests using robotic gas Metal arc welding with distortion measured by coordinate-measurement machine and equivalent plastic strain measured by optical three-dimensional-metrology measurements (Gesellschaft für Optische Messtechnik). Originality/value It can be concluded that a proper numerical computation using the adjusted model and property-evolved material exhibits a similar trend with acceptable agreement compared to the experiment by yielding an error percentage up to 30% for deformation and up to 21% for equivalent plastic strain at each individual measurement point.

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Section: Introductionmentioning

confidence: 99%

Experimental verification of computational and sensitivity analysis on substrate deformation and plastic strain induced by hollow thin-walled WAAM structure

Prajadhiana

Manurung

Bauer

et al. 2021

RPJ

View full text Add to dashboard Cite

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Investigation of bead morphology and mechanical behaviour for metal inert gas welding-based WAAM in pulsed mode metal transfer on 316LSi stainless steel

Yadav

Srivastava

Jain

et al. 2023

Journal of Adhesion Science and Technology

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Research progress on arc-based additive repair (AAR) technology for metal parts

Aimin,

Abdullah,

Pramodkumar

2024

Eng. Res. Express

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Arc-based additive additive technology, like other additive manufacturing technologies such as laser cladding, cold spraying, has been used in repairing metal parts that suffer harsh working conditions, including wear, corrosion, and breaking which prevent them from realising an economic development route when lifespan is extended. However, there is a limitation in the existing study of arc-based additive repair technology. against the backdrop of the rapid development of many emerging technologies, such as artificial intelligence. Hence, this paper aims to provide a holistic status quo of arc-based additive repairing technology (AAR) which includes five sections: Firstly, AAR is overviewed and then followed by types of AAR that provide an understanding of explicit AAR technique, such as powder plasma arc welding, plasma-transfer arc welding, gas metal arc welding, and gas tungsten arc welding. Secondly, parameters optimization characteristics and performance improvement measures related to arc energy density, shielding gas flow rate, tool path, and additional energy field are presented. Thirdly, defects and enhancing methods, including inner gas porosity, distortion and deformation, and cracks and corresponding addressing approaches, are discussed. Finally, challenges like efficiency and complexity of processes, defect control and quality assurance, and process displacement and geometric accuracy are concluded, and trends of AAR are proposed. Through this review, a new picture of the current state of AAR research unfolds that expect to inspire a sight-clear future.

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Parameter Selection for Wire Arc Additive Manufacturing (WAAM) Process

Cited by 6 publications

References 0 publications

Experimental verification of computational and sensitivity analysis on substrate deformation and plastic strain induced by hollow thin-walled WAAM structure

Experimental verification of computational and sensitivity analysis on substrate deformation and plastic strain induced by hollow thin-walled WAAM structure

Investigation of bead morphology and mechanical behaviour for metal inert gas welding-based WAAM in pulsed mode metal transfer on 316LSi stainless steel

Research progress on arc-based additive repair (AAR) technology for metal parts

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