Iranian Journal of Mechanical Engineering Transactions of ISME

Iranian Journal of Mechanical Engineering Transactions of ISME

Optimization of Dimensional Accuracy of Components Made by FDM and Comparison with SLA

Authors
Isa Hazbawi
Behnam Sepehr
Assistant Professor, Department of Biosystems Engineering, Lorestan University, Khorramabad, Iran
10.30506/ijmep.2025.2029413.1978
Abstract
FDM 3D printing is one of the fastest growing and expanding 3D printing technologies. However, the materials used in this type of 3D printing are mostly limited to ABS and PLA, but the need for materials with better mechanical properties has led to the production of new filaments in the field of FDM 3D printers. Since various parameters affect the final quality of parts produced with a 3D printer, studying and investigating the effect of these parameters is of particular importance. Stereo lithography and FDM processes have a more limited scope of application due to their low dimensional accuracy compared to the CNC process. In this study, the effect of effective parameters in the stereo lithography process was investigated, which in order of importance include: layer thickness, gate model, and distance between gates, gate loading depth, and gate overload. In addition, the factors related to the dimensional accuracy of the FDM process considered here include, in order of importance: layer thickness, density percentage, nozzle speed, and nozzle diameter. In addition, four samples were made by the FDM process according to different layer thickness and density percentage of stereo lithography and FDM. The aim is to find the effective factors in the stereo lithography process. The results showed that the manufactured parts have 85% of the strength of the original product; therefore, they can be used as functional parts.
Keywords
Stereo lithography
Dimensional accuracy
Layer thickness
Rapid prototyping
FDM

Subjects

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  • Receive Date 16 May 2024
  • Revise Date 11 January 2025
  • Accept Date 20 January 2025