Advanced In-situ Processes Monitoring Diagnostics and Ex-situ Material Characterization for Laser-based Metal Additive Manufacturing Processes.

Executive Summary

There is need for on-machine in-situ process characterization for laser-based advanced manufacturing processes and ex-situ post fabrication qualification of the produced parts. We aim to advance a recently demonstrated in-situ ultrasound technique for interrogating laser melt pools, propose a novel in-situ arrayed eddy current diagnostic for full field thermal measurements, and investigate modern laser-based ultrasound techniques for ex-situ measurement of residual stress and defects in lattice structures to improve non-destructive evaluation and characterization methods that support advanced manufacturing.

Publications, Presentations, and Patents

Morales, Rosa E., Niket Pathak, Todd W. Murray, and David M. Stobbe. 2023. “Characterizing anisotropy and uniaxial stress with zero group velocity Lamb modes.” 2023 American Society for Nondestructive Testing Research Symposium Conference Proceedings.

Rosa E. Morales, Niket Pathak, Jordan Lum, Christopher Kube, Todd W. Murray, and David M. Stobbe, “Characterizing anisotropy and uniaxial stress with zero group velocity Lamb modes” (Presentation, 2023 American Society for Nondestructive Testing Research Symposium, Houston, TX, 2023). 

Mukherjee, Saptarshi, Edward Benavidez, Joseph W. Tringe, Lei Peng, Yiming Deng, and David Stobbe. 2023. "In-situ 3D Temperature Field Modeling and Characterization using Eddy Current for Metal Additive Manufacturing Process Monitoring." 2023 American Society for Nondestructive Testing Research Symposium Conference Proceedings.

Lei Peng, Mukherjee, Saptarshi, Edward Benavidez, Joseph W. Tringe, Yiming Deng, and David Stobbe, "In-situ 3D Temperature Field Modeling and Characterization using Eddy Current for Metal Additive Manufacturing Process Monitoring” (Presentation, 2023 American Society for Nondestructive Testing Research Symposium, Houston, TX, 2023). 

Mukherjee, Saptarshi, Edward Benavidez, Joseph W. Tringe, Lei Peng, Yiming Deng, and David Stobbe. "An In-Situ Eddy Current Diagnostic for Temperature Monitoring in Metal Additive Manufacturing." In 2023 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting (USNC-URSI), pp. 341-342. IEEE, 2023. 

Mukherjee, Saptarshi, Edward Benavidez, Joseph W. Tringe, Lei Peng, Yiming Deng, and David Stobbe, "An in-situ eddy current diagnostic for temperature monitoring in metal additive manufacturing” (Presentation, 2023 IEEE International Symposium on Antennas and Propagation, Portland, OR, July 23-28, 2023). 

Morales, Rosa E., Niket Pathak, Jordan Lum, Christopher Kube, Todd W. Murray, and David M. Stobbe, “Characterizing Anisotropy and Uniaxial Stress with Zero Group Velocity Lamb Modes” (Presentation, SNT 17th International Symposium on Nondestructive Characterization of Materials, Zurich, Switzerland, Aug 15-17, 2023).