4 / 2023-12-17 23:34:23

Review of additive manufacturing technology:processing techniques and fundamentals

Additive manufacturing, feedstock, 3D object

Sequel to the challenges of conventional materials processing and manufacturing technologies, scientists and engineers are everyday searching for new technologies to improve or replace the existing ones. Additive manufacturing is one of the promising technology that shows the potential in replacing conventional manufacturing processes. This study reviewed the fundamentals and processing techniques of various additive manufacturing technologies such as, directed energy deposition, powder bed fusion, material jetting,etc.Basic working principles, sources of energy, raw and forms of materials as well as process parameters of the various additive manufacturing processes were studied.Recent original works were studied and relevant findings were summarised.It is deduced from the review indicated that additive manufacturing processes produce 3D objects by basic principle of layer-by-layer addition of material from a CAD model.Findings of the case studies revealed that the properties of the additive manufactured parts are better compared to those of the traditional wrought ones and WAAM is the most popular metal based additive manufacturing process.Additive
manufactured parts have isotropic properties.