Abstract
In this study, an experimental approach was developed to analyze and better understand the laser welding and melting of a powder bed process. Different optical diagnostics tools (high-speed camera, infrared camera, pyrometer, etc.) were applied to measure different physical quantities (molten pool morphology, temperature field, residual stresses, and distortions). As a result, measurements during the laser welding process facilitated the building of a database of experimental results (experimental benchmarks). The study of the melting of a powder bed enabled a better understanding of the physics related to the formation and behavior of the molten pool. These results can be used by researchers to improve and validate numerical simulations of these processes.
Highlights
The laser welding process is used widely in international industry
They have enabled the measuring of the molten pool morphology
The authors are interested in the effect of the welding speed on these results
Summary
The laser welding process is used widely in international industry. It involves using a laser to assemble various metals (carbon steels, stainless steels, aluminum, and titanium). Some experimental studies have examined the formation of a molten pool during laser welding and the melting of powder bed processes [10,30,33,34,35] They have enabled the measuring of the molten pool morphology. An experimental approach is proposed to study laser welding It involves instrumenting this process to measure different physical quantities (molten pool morphology, temperature field, residual stresses, and distortions). These quantities can be used to build a database (experimental benchmark) to validate the numerical simulation of this process.
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