About this Abstract |
Meeting |
2021 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2021)
|
Symposium
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Process Development
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Presentation Title |
Optical Observation of Sintering State for Large Area Projection Sintering (LAPS) |
Author(s) |
Derek Black, Landon Shumway, Jacob Henderson, Nathan B. Crane |
On-Site Speaker (Planned) |
Derek Black |
Abstract Scope |
Additive manufacturing (AM) is commonly implemented in the areas of prototyping and modelling. However, there are still significant obstacles to broader adoption, including poor repeatability and mechanical properties when compared to traditional manufacturing processes. While many methods for evaluating AM part quality exist, most are difficult or impossible to implement in real time and use for feedback control. In Large Area Projection Sintering (LAPS), extended sintering times make it possible to observe prints in real time. This study investigates the capabilities of optical imaging to assess sintering state in real time. While illuminating the build area, the reflection from the build surface was measured via an optical camera and correlated to different stages of melting which is referred to as sintering state. The measured sintering state was then compared to measured material properties. The properties of most interest include degree particle melt, ultimate tensile strength, and elongation at break. |
Proceedings Inclusion? |
Definite: Post-meeting proceedings |