Additive Manufacturing of Metallic Materials for High Strain Rate Applications

Metallic additive manufacturing (AM) is an attractive technology for the production of lethality test articles due to the potential for significantly reduced lead time and manufacturing cost.However, in order to be effective in providing accurate lethality data, the properties of the AM material have to match closely the properties of conventionally manufactured alloys found in real threat targets over a variety of strain rates and loading conditions.In response to this need, MRL proposes to demonstrate the feasibility of using physics-based and data-driven models for tailoring of AM processing parameters and post-processing recipes to create test articles with properties functionally similar to conventionally processed materials in quasi-static, Split Hopkinson Pressure Bar, and ballistic testing regimes.Approved for Public Release | 18-MDA-9522 (23 Feb 18)