Machines (EOS M290) at three locations are utilized to create the samples used to obtain bulk material data with metallic materials properties development and standards (MMPDS).

Problem

Qualification of additive manufacturing (AM) machines and materials is a major barrier for the broad adoption of AM. One of the most significant gaps to the approval of AM parts is a lack of widely accepted and available design data for engineers and designers to use. Generating the requisite data and models involves significant investment of resources and time to produce statistically significant data which involves generating test coupons under a controlled process, performing testing, and analyzing the resultant data. While there are some existing organizational or company specific proprietary AM design databases, there is currently a limited amount of publicly available industry or government accepted standard design data
for AM.

Objective

The overall program objectives are to achieve B and A-basis design allowable data and establish a best practice for developing AM allowables and specifications that are publicly available for laser powder bed fusion (LPBF) of Ti6Al4V. The selection of a single material and process is necessary to manage the scope of this effort, and to begin the work of identifying a standard process to develop material allowables and design data for metal AM.

Technical Approach

The National Institute for Aviation Research (NIAR) is leading the effort which includes Boeing, Auburn University, and Battelle. The technical approach is to develop a metal AM process-specific set of publicly available, statistically substantiated, material property data of bulk material properties for metallic AM material, with a corresponding material and process specification as well as a framework for future database development projects. The initial process and material combination for the scope of this project is LPBF of Ti6Al4V alloy utilizing EOS M290 machines at three different locations (Boeing, Auburn University and NIAR). Battelle is serving as the subject matter expert to transition the test data and guidelines generated in this program to shared databases and assist with meeting Metallic Materials Properties Development and Standardization (MMPDS) standards.

Project Participants

Project Principal

Other Project Participants

  • Boeing
  • Auburn University
  • Battelle

Public Participants

  • U.S. Department of Defense

Project Summary

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