| About this Abstract |
| Meeting |
Additive Manufacturing Benchmarks 2022 (AM-Bench 2022)
|
| Symposium
|
Additive Manufacturing Benchmarks 2022 (AM-Bench 2022)
|
| Presentation Title |
Voxel-scale Precision in Vat Photopolymerization Additive Manufacturing |
| Author(s) |
Jason Killgore, Callie Higgins, Ben Caplins, Cameron Miller, Yuqin Zong , Jeff Stansbury, Gannon Kehe |
| On-Site Speaker (Planned) |
Jason Killgore |
| Abstract Scope |
Vat photopolymerization, enabled by advances in high-resolution display technologies (e.g. LCD, DLP) to locally cure liquid resin into solid polymer, prints millions of voxels per layer simultaneously in a few seconds or less. Fundamental understanding and control of the printing process with geometrically and mechanically precise voxels requires characterization of printer hardware and resultant parts at sub-pixel or sub-voxel length scales. Despite the advanced light engines, resultant parts exhibit defects such as over/under-polymerization, 3-dimensional anisotropy, weakened layer interfaces and more. In this presentation, we examine the formation of these defects starting from the individual light-pixels in the printer, through to the liquid resin and eventually solid parts. We introduce novel, multiscale measurement tools that elucidate the small-scale printing process in both space and time. Finally, we discuss how the 2022 benchmark data set “Vat Photopolymerization Measurements of Cure Depth and Print Fidelity Vs.Varied Exposure Duration, Photopattern Dimensions, and Resin Characteristics” relates to the fundamental printing process. |
| Proceedings Inclusion? |
Undecided |