Estimating the absorption efficiency in a laser welding process using a nonlinear inverse problem method

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dc.contributor.authorDourado da Silva R.G.
dc.contributor.authordos Santos Magalhaes E.
dc.contributor.authorde Lima e Silva S.M.M.
dc.contributor.authordos Santos Paes L.E.
dc.contributor.authorPereira M.
dc.date.accessioned2023-08-26T18:12:38Z
dc.date.available2023-08-26T18:12:38Z
dc.date.issued2023
dc.description.abstract© 2022 Elsevier Masson SASA numerical-experimental methodology is presented in this study to estimate the absorption efficiency in a laser welding process by estimating the rate of energy transferred to a metal plate. The iterative Function Specification Method was modified to account for moving temperature sensor thermal sensitivity as a function of time and position relative to the welding bead. Thus, highly nonlinear problems can be solved by using a high-temperature gradient in the measurement sensor region. Three experiments on an AISI 1020 steel sheet were carried out using a 3 kW fiber laser and a 3 m/min welding speed. A thermo-fluid model was used with solid–liquid phase changes, buoyancy forces, and the Marangoni effect in the welding pool to model the physical phenomena. A code in Matlab was developed to solve the inverse problem. The direct problem was solved using COMSOL Multiphysics through the Livelink for Matlab feature. The average absorption efficiency was 79.5% for the welding process. A comparison was made between the geometry of the welding bead obtained in experiments with the numerically calculated welding bead to validate the model. The results obtained in this article are intended to assist simulations in laser welding processes and are in agreement with the literature data.
dc.description.volume183
dc.identifier.doi10.1016/j.ijthermalsci.2022.107846
dc.identifier.issn1290-0729
dc.identifier.urihttps://repositorio.fei.edu.br/handle/FEI/4876
dc.relation.ispartofInternational Journal of Thermal Sciences
dc.rightsAcesso Aberto
dc.subject.otherlanguageAbsorption efficiency
dc.subject.otherlanguageInverse heat conduction problem
dc.subject.otherlanguageLaser welding
dc.subject.otherlanguagePhase change problem
dc.subject.otherlanguageThermal-hydraulic model
dc.titleEstimating the absorption efficiency in a laser welding process using a nonlinear inverse problem method
dc.typeArtigo
fei.scopus.citations5
fei.scopus.eid2-s2.0-85136722963
fei.scopus.subjectAbsorption efficiency
fei.scopus.subjectExperimental methodology
fei.scopus.subjectInverse heat conduction problem
fei.scopus.subjectNonlinear inverse problems
fei.scopus.subjectNumerical experimental
fei.scopus.subjectPhase change problem
fei.scopus.subjectRate-of-energy
fei.scopus.subjectThermal hydraulic modeling
fei.scopus.subjectWelding beads
fei.scopus.subjectWelding process
fei.scopus.updated2024-08-01
fei.scopus.urlhttps://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85136722963&origin=inward
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