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Optimization of Manufacturing Parameters and Tensile Specimen Geometry for Fused Deposition Modeling (FDM) 3D-Printed
Arda Özen1, Dietmar Auhl1, Christina Völlmecke2
1Chair of Polymer Materials Science and Technologies, Institute of Material Science and Technology, Technische Universität Berlin, Ernst-Reuter-Platz 1, 10587 Berlin, Germany.
Materials (Basel, Switzerland)
|June 2, 2021
Summary
This study characterizes fused deposition modeling (FDM) 3D-printed polymer parts. We analyzed specimen geometry and slicer parameters to understand their impact on mechanical properties and failure locations.
Area of Science:
- Materials Science
- Mechanical Engineering
- Additive Manufacturing
Background:
- Additive manufacturing (AM) offers design freedom but often yields lower mechanical properties than traditional methods.
- Improving the mechanical performance of AM parts is crucial for wider industrial adoption.
- Fused Deposition Modeling (FDM) is a common AM technique with ongoing research into material property optimization.
Purpose of the Study:
- To characterize the mechanical response of FDM-printed polymer structures.
- To compare the influence of different tensile specimen geometries (ASTM D3039, ISO 527-2) on material properties.
- To investigate the effect of slicer parameters on failure modes and propose a method for measuring effective mechanical properties.
Main Methods:
- Comparative analysis of four polymer tensile test specimen geometries.
- Finite Element Method (FEM) simulations for computational analysis.
- Uniaxial tensile testing of FDM-printed specimens.
- Examination of various 3D printing slicing strategies and their impact.
Main Results:
- Specimen geometry and slicer parameters significantly influence failure positions in FDM parts.
- A correlation was observed between printing parameters, specimen design, and measured mechanical properties.
- Effective mechanical properties can be quantified using a proposed measurement formalism.
Conclusions:
- Understanding the interplay between specimen design and printing parameters is key to optimizing FDM parts.
- The proposed formalism offers a method to accurately measure effective mechanical properties of 3D-printed materials.
- Further research can leverage these findings to enhance the reliability and performance of AM components.
