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Investigations into the Material Characteristics of Selected Plastics Manufactured Using SLA-Type Additive Methods
Dominika Grygier1, Adam Kurzawa2, Mateusz Stachowicz2
1Department of Vehicle Engineering, Faculty of Mechanical Engineering, Wroclaw University of Science and Technology, Smoluchowskiego 25 Str., 50-370 Wroclaw, Poland.
Polymers
|June 19, 2024
Summary
This study analyzed the strength of 3D-printed resins, determining their mechanical properties and biocompatibility for potential biomedical applications. The research expands material libraries for simulations, improving accuracy for advanced engineering designs.
Area of Science:
- Materials Science
- Mechanical Engineering
- Biomedical Engineering
Background:
- 3D printing, specifically stereolithography (SLS), is increasingly used for producing functional parts.
- Commercially available resins for 3D printing require thorough characterization for reliable application, especially in critical fields like biomedicine.
- Existing material libraries for computational simulations often lack detailed data for novel 3D printing resins.
Purpose of the Study:
- To conduct a comprehensive strength analysis of seven commercially available 3D printing resins.
- To determine key mechanical properties and material constants for the Johnson-Cook strength model.
- To evaluate the biocompatibility of these resins for potential biomedical applications.
Main Methods:
- Tensile testing of 70 samples (10 per resin type) using an MTS Bionix machine.
- Development and validation of a rheological model through numerical simulations (FEM/SPH).
- Fracture surface analysis via scanning electron microscopy (SEM) and biocompatibility testing.
Main Results:
- Determination of basic mechanical properties for selected 3D printing resins.
- Successful tuning of a rheological model and determination of a fracture criterion with <5% error.
- Characterization of crack formation and initial biocompatibility assessment.
Conclusions:
- The study provides crucial strength data for 3D printing resins, enhancing their use in engineering simulations.
- Expanded material libraries improve the accuracy of computational models for predicting material behavior.
- Findings support the potential of these resins for biomedical applications, pending further investigation.
