Prof. Tianju Xue’s Team Wins Awards at 2025 NIST AM-Bench Modeling Challenges

Assistant Professor Tianju Xue, his PhD student Daoyang Dong, together with a colleague from CUHK, have achieved outstanding results in the 2025 NIST Additive Manufacturing Benchmark Test Series (AM-Bench) Simulation Challenges, securing a first-place and a second-place finish. The first place was for modeling the amount of deflection anticipatable in the baseplate of objects made of Alloy 718 (a high-strength, corrosion-resistant nickel-chromium superalloy) which have been 3D-printed via laser hot-wire directed energy deposition (DED). The second place was for modeling how much residual elastic strains there would be (measured using synchrotron X-ray diffraction) in objects also made of Alloy 718 printed using laser hot-wire DED.

The AM-Bench Simulation Challenges are run triennially by AM-Bench, a project led by the National Institute of Standards and Technology (NIST) under the U.S. Department of Commerce. AM-Bench was established to develop benchmark measurements for all additive manufacturing (AM) processes and materials; it curates rigorously controlled measurements and datasets, as well as provides standard test problems for evaluating how accurate computational models and methods can predict various aspects (e.g., residual stress, deformation and warpage, etc.) pertaining to the outcomes/products of 3D printing and AM processes.

The 2025 AM-Bench Challenges were the third edition of the series, receiving some 80-plus submissions from participants representing universities, research laboratories and engineering industries around the world, across 19 challenge problems (details on the problems are available at https://www.nist.gov/ambench/am-bench-2025-measurements-and-challenge-problems). 

We congratulate Prof. Xue’s team on achieving such excellent results.