EFFECT OF MANUFACTURING-INDUCED DEFECTS AND ORIENTATION ON THE FAILURE AND FRACTURE MECHANISM OF 3D PRINTED STRUCTURES
Abstract
Additive manufacturing is a rapidly growing cutting edge technology. Number of experimental
studies have shown that strength of product manufactured by additive Fused Deposition Method
(FDM) is influenced by different processing parameters involved during manufacturing. This
thesis work presents experimental and theoretical investigation of mechanical behavior of ABS
material fabricated with variation in some of process parameters such as Axis Orientations,
Raster Orientation, Infill Percentage, Layer Height and Number of Shells. Different experiments
were designed to understand the basics of 3D printing manufacturing and to characterize the
mechanical behavior of 3D printed structures. This study helps to understand, how different
raster orientations affects the fracture toughness of 3D printed structures and also tell us under
which process parameters additive manufactured structures provide better tensile, shear and
compressive strength. Using this study we can understand and develop optimized manufacturing
process for robust 3D printing manufacturing.