Optimization and simulation of laser beam trepanning approach on DSS superalloy. (2021) - Panigrahi, Debasish
Abstract: Generation of micro-scaled features over super alloys are very convolute process. However, many advanced machining tactics are extant to compete against the materials response during the genesis of geometrical features. Out of those, the most prominent approach having less arduousness is machining with laser. Although as an idiosyncratic process laser beam machining (LBM) holds many superiorities, but it has certain paucities like it ingest much machining cost during the process. Therefore, the knowledge of laser related process variables and their effects during machining of hole feature upon super alloy sheet is always essence to obtain requisite traits and preserve the cost-effectiveness. This paper holds preliminary machining analysis with the bolster of methodology like Finite Element Method (FEM) to scrutinize some of the captious responses like temperature disparities, heat flux, and structural analysis during the course of the electrolyte supported laser beam trepanning machining (ES-LBTM) by considering temperature fields for structural analysis. In this research, thermal analysis were performed on 3D work model of Fe-Cr-Ni based super alloy (duplex stainless steel i.e. DSS) with an assist of laser as a source. It also reports material removal rate (MRR) response from the experimentation followed by particle-swarm optimization (PSO). Moreover, to scrutinize the structural deformation and the temperature distribution at the scope of machined surface during ES-LBTM, a 3D physical model was established using ANSYS to ascertain the influence of one of the imperative laser process parameter such as laser power with three distinctive levels during the generation of hole feature.