Int J Performability Eng ›› 2022, Vol. 18 ›› Issue (9): 637-643.doi: 10.23940/ijpe.22.09.p4.637643

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Evaluation of Mechanical Behaviour of 3D Printed Structures using FDM Process

A. Lakshumu Naidu, M. Jaya Krishna*, and V. Ram Babu   

  1. GMR Institute of Technology, Rajam, Andhra Pradesh, 532127, India
  • Submitted on ; Revised on ; Accepted on
  • Contact: *E-mail address:

Abstract: 3D printing plays a significant role in advanced manufacturing because it is adaptable. It is a type of additive manufacturing technique that prints an object layer by layer to create a 3D model. Fused Deposition Modelling (FDM) is a 3D printing technology procedure in which the material is heated and extruded layer by layer through a nozzle. When compared to other traditional processes such as injection moulding, 3D printing using the FDM process offers greater versatility. This research provides a methodology for evaluating the mechanical characteristics of various structured FDM polymers. Parametric research is provided to evaluate production aspects such as infill structure, which affect the mechanical performance of PLA and ABS-based specimens. However, understanding the mechanical characteristics of 3D printed structures is inadequate. Experiments were carried out in order to get a better understanding of the design and analysis of various types of 3D printed structures manufactured using the Fused Deposition Modelling (FDM) technology. The specimen is designed in Solid Works modelling programme and saved as a Stereolithography file (stl ). QIDI slicing software is used, with the same infill density and orientation. The specimen is sliced with a 40% infill density and a layer height of 0.2 mm. The G-Code file is being created. After slicing, it is produced using an Xmax wol 3D printer using the generated G-Code file. A compression test was done on a square cross section specimen. The test is carried out utilizing a Universal Testing Machine (UTM). Trihexagon, Cubic, Lines, Cubic Subdivision, Gyroid, Triangles, Octet, concentric, cross 3D, and grid are the infill structures employed. This was done to determine which material and infill structure is more durable and has higher compressive strength.

Key words: PLA, ABS, compressive strength, FDM, infill structure