| About this Abstract |
| Meeting |
2024 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2024)
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| Symposium
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2024 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2024)
|
| Presentation Title |
Measuring Thermomechanical Response of Large-Format Printed Polymer Composite Structures via Digital Image Correlation |
| Author(s) |
Tyler Corum, Johnna O'Connell, James Brackett, Ahmed Hassen, Chad Duty |
| On-Site Speaker (Planned) |
Tyler Corum |
| Abstract Scope |
Large-format additive manufacturing (LFAM) can create large structures typically measuring several meters in scale. Fiber reinforced polymers (FRPs) are commonly used in these structures to reduce distortion experienced during printing, however, FRPs introduce highly anisotropic thermomechanical properties across a nonhomogeneous microstructure, which can result in critical distortion during tooling. Measuring the thermomechanical response of LFAM structures requires a more representative approach than traditional techniques, such as thermomechanical analysis (TMA), as they assume homogenous microstructure throughout the sample. This study compared coefficient of thermal expansion (CTE) values from LFAM structures made of 20% by weight carbon fiber reinforced acrylonitrile butadiene styrene (CF-ABS) measured using TMA and the digital image correlation oven (DIC Oven). The DIC Oven also quantified global effects of different ply orientations on thermomechanical response, which cannot be captured by TMA. This work also developed a model to predict distortion that accounts for the nonhomogeneous anisotropy of LFAM structures. |
| Proceedings Inclusion? |
Definite: Post-meeting proceedings |