About this Abstract |
Meeting |
2024 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2024)
|
Symposium
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2024 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2024)
|
Presentation Title |
Thermal Emission-Based Geometric Mapping of Specular Glass Surfaces |
Author(s) |
Delaney R. Reynolds, Edward C. Kinzel, Robert Landers |
On-Site Speaker (Planned) |
Delaney R. Reynolds |
Abstract Scope |
Traditional line scanners used in 3D printing rely on diffuse reflection of light to determine form, and therefore it is difficult to produce accurate models of specular surfaces, such as glass. To overcome this challenge, geometry can be resolved by thermal emission. Using a mid-IR CO2 laser, morphology can be determined through emission detection via a thermal camera. To calibrate this method for accuracy, resolution can be tested with an optical flat, which is flat on the order of a nanometer. Changes in the height of the flat due to noise can be calculated by trigonometry from the angle of incidence of the laser and the movement of the flat with a motorized stage. After filtering, the surface of the flat displays approximately 60-micron resolution, with hope for future improvement. |
Proceedings Inclusion? |
Definite: Post-meeting proceedings |