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Vibration Behavior of 3D-Printed Graded Composites: Fabrication and Testing
Fazeel Khan1, Kumar Singh1, Justin Carter1
1Department of Mechanical and Manufacturing Engineering, Miami University, Oxford, OH 45056, USA.
Polymers
|December 17, 2024
Summary
Multi-head 3D printing enables tailored composite structures with controlled vibrational properties. This study predicts damping and natural frequencies of graded 3D-printed parts using material properties, validated by simulation and experiments.
Area of Science:
- Materials Science
- Mechanical Engineering
- Additive Manufacturing
Background:
- Multi-head 3D printing allows for composite structures with varied material properties.
- Selective material placement enables layered and graded geometries for specific mechanical and vibrational control.
Purpose of the Study:
- To predict the damping and natural frequencies of 3D-printed graded structures.
- To validate a predictive model using simulation and experimental data.
Main Methods:
- Utilizing individual material properties to model composite structures.
- Considering fixed and variable storage (E') and loss (E″) moduli as functions of temperature and frequency.
- Performing modal vibration testing on graded 3D-printed samples.
Main Results:
- A good match was observed between simulated and experimental results for modal vibration testing.
- The proposed model effectively predicts the dynamic properties of graded structures.
- Variable storage and loss moduli were established as functions of temperature and frequency.
Conclusions:
- The developed model is a valuable tool for designing 3D-printed parts with specific dynamic characteristics.
- This approach supports the creation of components for applications requiring controlled vibration, such as in rotating machinery.
