Missouri University of Science and Technology
Rolla, MO · US · publishing in AM since 1998
Hybrid additive-subtractive manufacturing and DED for repair of high-value components
Frank Liou is Curators' Distinguished Professor of Mechanical and Aerospace Engineering at Missouri University of Science and Technology (Missouri S&T) and a pioneer of hybrid additive-subtractive manufacturing, beginning work in this area in the late 1990s. His research group developed one of the earliest integrated laser DED and CNC machining systems, demonstrating that alternating deposition and in-process machining steps could achieve near-wrought surface finish and dimensional tolerances for complex near-net-shape metallic parts. Liou's work on DED repair of turbine blades and aerospace tooling has been funded continuously by NASA, the US Air Force, and the Department of Energy, with demonstrated repair of gamma titanium aluminide turbine blades retaining over 90% of baseline fatigue life. He authored the textbook "Rapid Prototyping and Engineering Applications" and has trained numerous PhD graduates who now lead AM programmes in industry and academia. Liou has served on the editorial board of the Journal of Manufacturing Processes and is a Fellow of the Society of Manufacturing Engineers.
Last reviewed: 2026-05-16 · Sources: 1
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