Together, the Air Force Research Laboratory (AFRL) and America Makes have made tremendous progress in advancing open framework software, controls, and equipment with multi-laser metal additive manufacturing (AM). However, most commercial scan strategies are proprietary making it difficult to fully understand the process. Therefore, development is necessary in the open-sector to realize improvement in microstructural homogeneity, surface roughness, geometric tolerance, and distortion via optimization of scan strategies. The Open-source Additive Scanning Implementation Strategy (OASIS) Challenge is a direct challenge to the AM industry to advance temporal and spatial thermal management through the submission of innovative scan strategy codes, algorithms, and/or methods.
This Challenge leverages previous America Makes project (4039) where open-source software was developed, along with the current Acceleration of Large Scale AM (ALSAM) project (3024).
Challenge Model Geometries
Challenge Build Plate Geometry
All parts will be printed with Ti-6Al-4V.
Block Volume #1: Participant designed trophy / medallion
- Block volume bounding size: 60mm x 75mm x 60mm (X,Y,Z)
- For this part, the consolidated volume (including supports) is limited to 30,000mm^3 (30cm^3)
- The part must have features (i.e. holes) to allow unfused powder to be drained out
- There will be no post-processing beyond cutting the part from the plate (i.e. no support removal, no polishing, no heat treatment, etc.)
Block Volume #2: “Mystery Part”
- Block volume bounding size: 70mm x 75mm x 60mm (X,Y,Z)
- Mystery part is a representative aerospace component composed of several geometric features including:
- Thin walls
- Thick to thin transitions
- Various radii
- Overhanging features
- Channels/holes of various geometries and in multiple orientations
Are YOU up for the Challenge?
Here’s How it Works
Domestic and foreign members who are in good standing with America Makes are eligible to participate. Only the lead proposer must be a member of America Makes. Participants of the lead proposer’s team may be made up of America Makes members and non-members.
If the lead proposing organization is not currently an America Makes member, the organization must become one by March 1, 2021. Information on how to join America Makes is available on the membership page. (Note: The foreign membership approval process requires a minimum of three weeks to complete.)
Members associated with the evaluation panel are not eligible. This includes participants employed by NCDMM, AFRL, and GE.
(Recorded September 9, 2020)
Questions & Answers
Any strategy that covers the 2D cross section of each layer with scans but does something different than simply hatching back and forth across the entire part.
Yes, multiple entries per organization is permitted, however only one (1) entry per individual. A new private GitHub repository is required for each entry.
For questions, please contact us at firstname.lastname@example.org.