Top selected code submissions are being used to print geometries from Ti-6Al-4V. These parts are then subjected to a predefined evaluation criteria and scored.

Problem

While America Makes has made tremendous progress in advancing open framework software, controls, and equipment with multi-laser metal additive manufacturing (AM), there are still challenges with the proprietary nature of commercial scan strategies. Substantial development of open-source scan strategies is needed to realize improvements in microstructure homogeneity, surface roughness, geometric fidelity, and strength. This challenge seeks to address these issues and create a body of work that can be utilized across the AM industry.

Objective

The OASIS Challenge seeks to advance the state-of-the-art of laser-based powder bed AM in temporal and spatial thermal management through the submission of innovative open-source scan strategy codes, algorithms, and/or methods. This is a direct scan strategy challenge to the AM industry, as opposed to a process parameter challenge. All bulk parameters are constrained, and participants are challenged to develop the best methods for scanning each layer of the challenge geometries.

Technical Approach

America Makes, working in collaboration with the Air Force Research Laboratory (AFRL) and General Electric – Global Research (GEGR), has created an innovative approach to advance the AM industry by challenging the brightest minds from industry and academia to utilize open-source software developed in America Makes Project 4039 entitled “Development and Demonstration of Open-Source Protocols for Powder Bed Fusion Additive Manufacturing (PBFAM)” to advance the technology of open-source software and machine platforms.

A down-selection process of the submitted codes is being conducted according to a series of quantitative metrics for ranking the submissions and identifying the best codes. America Makes is working with GEGR to utilize the few “top selected” scan strategies to produce physical samples on the M2-Open Direct Metal Laser Melting (DMLM) machine that was developed under America Makes Project 3024 entitled “Acceleration of Large-Scale Additive Manufacturing (ALSAM).” Samples are being evaluated using a set of relevant evaluation/inspection criteria. Cash prizes up to $25,500 are being awarded. The results and associated data are then being integrated into the America Makes National AM Roadmap and the America Makes Digital Storefront.

America Makes, working in collaboration with the Air Force Research Laboratory (AFRL) and General Electric – Global Research (GEGR), has created an innovative approach to advance the AM industry by challenging the brightest minds from industry and academia to utilize open-source software developed in America Makes Project 4039 entitled “Development and Demonstration of Open-Source Protocols for Powder Bed Fusion Additive Manufacturing (PBFAM)” to advance the technology of open-source software and machine platforms.

A down-selection process of the submitted codes is being conducted according to a series of quantitative metrics for ranking the submissions and identifying the best codes. America Makes is working with GEGR to utilize the few “top selected” scan strategies to produce physical samples on the M2-Open Direct Metal Laser Melting (DMLM) machine that was developed under America Makes Project 3024 entitled “Acceleration of Large-Scale Additive Manufacturing (ALSAM).” Samples are being evaluated using a set of relevant evaluation/inspection criteria. Cash prizes up to $25,500 are being awarded. The results and associated data are then being integrated into the America Makes National AM Roadmap and the America Makes Digital Storefront.

Project Participants

Project Principal

Other Project Participants

  • GE Global Research
  • Air Force Research Laboratory (AFRL)

Public Participants

  • U.S. Department of Defense

Project Summary

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