We will develop microwave and acoustic methods to address the most difficult and important characterization challenges (material stress state, defects, material phase, and others) for additively manufactured metallic products, in turn creating an optimization feedback loop to accelerate and improve additive-manufacturing processes. These potentially revolutionary advancements could have broad impact on several national missions, including stockpile stewardship, nuclear threat reduction, biosecurity, and energy security.
Chang, T., et al. "An in-situ Millimeter-Wave Diagnostic for Droplet Characterization During Jetting-Based Additive Manufacturing Processes." SPIE Smart Structures + Nondestructive Evaluation 2020 (forthcoming). LLNL-ABS-793712.
Harke, K., et al. "Laser-Based Ultrasound Interrogation of Sub-Surface Voids in Additively Manufactured Materials." Smart Materials and Nondestructive Evaluation for Energy Systems 2020 (forthcoming). LLNL-ABS-795476.
Lawrence Livermore National Laboratory • 7000 East Avenue • Livermore, CA 94550
Operated by Lawrence Livermore National Security, LLC, for the Department of Energy's National Nuclear Security Administration.