Study of Machining Parameters on Tensile strength and Surface roughness of ABS samples printed by FDM

Additive Manufacturing or 3D printing is referred as digital fabrication technology which is rapidly increasing globally. It creates physical objects from geometrical representation by successive addition of materials. 3D printing is economical in manufacturing. Due to its better properties like toughness, formability, hardness, non-toxic, retention of colour and simple to form, these properties are appropriate for the FDM technology when Acrylonitrile Butadiene Styrene (ABS) is used for fabrication. In this paper, ABS samples are manufactured using Fusion Deposition Method (FDM) with an aim of studying tensile behaviour and surface roughness of the samples at different process parameters utilised in fabrication. According to Taguchi design of experiments, the experimental runs are designed. The input parameters considered for this investigation are layer height and melting temperature. For this corresponding process parameters, the output responses tensile strength and surface roughness are measured. Investigations were made to determine the optimal parameter combinations for fabrication and explored for various applications when fabrication is done using this ABS. In this work, better strength is obtained at layer height of 0.25 mm and nozzle temperature of 235 degrees C, and better surface finish is obtained at layer height of 0.2 mm and nozzle temperature of 235 degrees C.