| About this Abstract |
| Meeting |
2023 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2023)
|
| Symposium
|
2023 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2023)
|
| Presentation Title |
Coaxial Color Channel Focus Evaluation
to Estimate Standoff Height
in Directed Energy Deposition |
| Author(s) |
Callan Herberger, Lauren Heinrich, Erik LaNeave, Brian Post, Blane Fillingim, Eric MacDonald, Thomas Feldhausen, James Haley |
| On-Site Speaker (Planned) |
Callan Herberger |
| Abstract Scope |
Directed Energy Deposition is an additive manufacturing process that is being rapidly adopted by industry and is well suited for the fabrication of complex components in a variety of metal alloys. Inexpensive and minimally intrusive methods to find the best standoff are needed to supply real time control to maintain optimal standoff distance. The present work explores the quantification of the focus of the three-color channels of a coaxial camera to determine the standoff height. An experiment was performed in which a 254 mm wall is built and the standoff height, initially 5.0 mm below the optimal position, was then intentionally increased by 1.0 mm to a final position 7.0 mm above optimal. Computer vision is shown to monitor the focus in each color band and estimate standoff distance. A response can be calculated in under 40 ms using simple hardware and can work in most laser-based DED systems. |
| Proceedings Inclusion? |
Definite: Post-meeting proceedings |