Investigating the Impacts of Heterogeneous Infills on Structural Strength of 3D Printed Parts

• Published in: Key engineering materials Vol. 799; pp. 276 - 281
• Main Authors: Mahmood, Khalid, Butt, Sajid Ullah, Saeed, Hasan Aftab, Sajjad, Ramisha
• Format: Journal Article
• Language: English
• Published: Zurich Trans Tech Publications Ltd 2019
• Subjects: Additive manufacturing; Construction materials; Fused deposition modeling; Rapid prototyping; Redevelopment; Strength to weight ratio; Structural strength; Thermoplastic resins; Three dimensional models; Three dimensional printing; Infill Patterns; 3D Printing; Fused Deposition Modeling (FDM) FEA; Additive Manufacturing
• ISSN: 1013-9826; 1662-9795; 1662-9795
• DOI: 10.4028/www.scientific.net/KEM.799.276

Additive Manufacturing is a manufacturing process based on layers for making three dimensional scaled physical parts directly from 3D CAD data. Fused Deposition Modeling (FDM) is widely used technology that provides functional prototypes in various thermoplastics. In additive manufacturing, filling patterns are of two types; External and Internal filling patterns. Multiple patterns are developed for both filling categories. In this work, a heterogeneous infill strategy is used by choosing developed patterns in order to improve strength to weight ratio, material usage and build time for parts. A rectilinear pattern combination with triangular and rectangular pattern has been chosen for 3D printing. The tensile testing is performed on the printed specimens to calculate the strength to weight ratio. By comparing the obtained results, a strategy based on maximum strength to weight ratio, minimum material usage and reduced build time is recommended for FDM technology.