About this Abstract |
Meeting |
2022 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2022)
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Symposium
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2022 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2022)
|
Presentation Title |
Characterizing The Thermal-Induced Distortion of Large-scale Polymer Composite Printed Structures |
Author(s) |
Tyler Corum, Johnna O'Connell, James Brackett, Ryan Spencer, Ahmed Hassen, Chad Duty |
On-Site Speaker (Planned) |
Tyler Corum |
Abstract Scope |
The Big Area Additive Manufacturing (BAAM) system at Oak Ridge National Laboratory (ORNL) can print large-scale parts with carbon fiber-reinforced acrylonitrile butadiene styrene (CF-ABS). Incorporating reinforcing fibers improves stiffness and strength, but also introduces significant anisotropy in the thermomechanical performance. Understanding the distortion experienced during thermal cycling of a printed tool is crucial to maintaining tolerances and avoiding part failure. This study uses digital image correlation (DIC) to measure the coefficient of thermal expansion (CTE) of a printed part between room temperature and a known steady-state temperature. Various samples were evaluated to determine the impact of different print parameters, nozzle geometries, and orientations with the intent to minimize thermally-induced distortion. |
Proceedings Inclusion? |
Definite: Post-meeting proceedings |