THIS COMPILATION OF Selected Technical Papers, STP1644, Progress in Additive Manufacturing 2021, contains peer-reviewed papers that were presented at the ASTM International Conference on Additive Manufacturing (ICAM 2021) held during November 1-5, 2021, in Anaheim, California, USA. The conference was sponsored by the ASTM International Additive Manufacturing Center of Excellence, multiple ASTM Technical Committees, and several government organizations and institutes. Symposium Chairs and STP Editors: Nima Shamsaei Auburn University Auburn, AL, USA Nik Hrabe National Institute of Standards and Technology Boulder, CO, USA Mohsen Seifi ASTM International Washington, DC, USA TABLE OF CONTENTS Overview Design and Manufacture of Precast Concrete Formworks Using Polymer Extrusion-Based Large-Scale Additive Manufacturing and Postprocessing S. Bhandari, R. A. Lopez-Anido, F. Saavedra Rojas, and A. LeBihan Estimation of Printing Time for Laser-Based Powder Bed Fusion of Metals L. Bauch, F. Winklbauer, T. Stittgen, A. Collet, and J. H. Schleifenbaum The Dual Functionality of Reverse Engineering for Additive Manufacturing Z. Geng and B. Bidanda Powder-Gas Jet Velocity Characterization during Coaxial Directed Energy Deposition Process Z. Jardon, J. Ertveldt, M. Hinderdael, and P. Guillaume Prediction of Melt Pool Temperature for Directed Energy Deposition Using Supervised Learning Methods on Optical Measurement Data C. Snyers, J. Ertveldt, J. Sanchez-Medina, Z. Jardon, and J. Helsen FPGA-Based Visual Melt Pool Monitoring with Pyrometer Correlation for Geometry and Temperature Measurement during Laser Metal Deposition J. Sanchez-Medina, G. Arroud, J. Ertveldt, and P. Guillaume Detection of the Part Geometry in Laser Powder Bed Fusion Using Layer-Wise Image F. Gabriel Fischer, N. Birk, T. Gerrit Lucke, and N. Praet AIoT for Additive Manufacturing---Novel Edge and Fog AI Strategies and Architectures Applicable to Real-Time In Situ Monitoring J. Farret, N. Baghdadi, and S. A. Ranjbar Fully Integrated Multidisciplinary Additive Manufactured Reaction Control System J. F. Horton, S. A. Yows, M. H. Fung, A. Fung, R. P. O’Hara, Z. Murphree, and G. Miller Material Characterization Study of Laser Powder Bed Fusion Type 316L Stainless Steel with Process Parameter Modifications to Promote Isotropy C. Snyder, S. Attanasio, T. White, D. Buller, T. Jones, R. Morris, J. Sutliff, J. Adams, and I. Todd Validation of a Miniature Rectangular Tension Test Specimen for Metallic Additive Manufacturing Materials J. S. Ten, Z. H. Liu, H. L. Seet, and M. L. Nai Reviewing Part Identification for Additive Manufacturing and Assessing Future Fields of Research M. Kolter, A. Collet, and J. H. Schleifenbaum Protecting Additive Manufacturing Information When Encryption Is Insufficient Jo. Lubell State of Security Awareness in the Additive Manufacturing Industry: 2020 Survey M. Yampolskiy, P. Bates, M. Seifi, and N. Shamsaei Understanding the Impact of Additive Friction Stir Deposition on the Production of 7XXX Aluminum Alloy Parts M. P. Espirindio e Silva, H. Lalvani, A. Reimer, and S. Fitzpatrick An Analysis of Lunar Landing Pad Designs and Construction Methods A. I. Campbell, H. C. Carson, M. De Soto, M. R. Fiske, L. E. Martin, V. R. T. Murai, F. S. Ramirez, E. M. Romo, K. E. Schang, and K. C. Smith Additive Manufacturing for Spare Parts in Marine and Offshore Applications D. Qiao, S. Seah, T. Chand, R. F. Noyer, B. Wang, and M. Cridland