PARAMETRIC INVESTIGATION ON SELECTIVE LASER SINTERING PROCESS BY AHP/MOORA METHOD USING PA2200 MATERIAL

Abstract

The Selective Laser Sintering (SLS) is a one of the rapid prototyping (RP) technology by which physical objects
are created directly from CAD model using layer by layer deposition of extruded material. SLS produces high er strength
and surface finish parts. In this present work important process parameters of the SLS process such as layer thickness and
orientation of part is taken as input parameter. Specimens are prepared for Tensile testing as per ASTM standards. Their
influence on responses such as Tensile strength, Tensile Modulus, and Elongation of the test specimens will be studied. The
application of Analytical hierarchy process (AHP) method and multi objective optimization on the basis of ratio analysis
(MOORA) method for selecting the optimal value of output parameters of Selective laser sintering machining process. The
current study reveals that the results obtained using the AHP with MOORA methods are satisfactory and it prove the
applicability, and potentiality of these methods. After results, it is concluded that layer thickness is more significant
parameter for SLS process than orientation. If we increase layer thickness and orientation mechanical property like tensile
strength and Tensile Modulus decreases.