Faculty Directory
Kornel F. Ehmann

Professor Emeritus of Mechanical Engineering


2145 Sheridan Road
Tech L288
Evanston, IL 60208-3109

847-491-3263Email Kornel Ehmann


Advanced Manufacturing Processes Laboratory (AMPL)


Mechanical Engineering


Master of Science in Robotics Program

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PhD in Mechanical Engineering, University of Wisconsin-Madison, 1979 

MS in Mechanical Engineering, University of Belgrade, Yugoslavia, 1974

BS Mechanical Engineering, University of Belgrade, Yugoslavia, 1970

Research Interests

Micro/meso-scale manufacturing; precision engineering; machine tool dynamics and control; material removal processes; automation and robotics.

Significant Recognition

  • Fellow of ASME (American Society of Mechanical Engineers)
  • Fellow of SME (Society of Manufacturing Engineers)
  • Fellow – of ISNM (International Society for Nanomanufacturing)
  • James N. and Nancy J. Farley Professor in Manufacturing and Entrepreneurship (1999)
  • Adjunct Professor, Department of Mechanical Science and Engineering, University of Illinois at Urbana/Champaign (2004)
  • Distinguished Honorary Professor, Department of Mechanical Engineering, Indian Institute of Technology (IIT), Kanpur, India (2004)
  • Visiting Professor, University of Belgrade, Serbia (2008)
  • Adjunct Chair Professor, Chung Yuan Christian University, Chung-Li, Taiwan (2006) Distinguished Visiting Fellow, The Royal Academy of Engineering at Cardiff University (2009)
  • Distinguished Visiting Fellow, The Royal Academy of Engineering at Cardiff University (2009)
  • Visiting Professor, Institut fuer Werkzeugmaschienen und Fabrikbetrieb (IWF), Technische Universitaet – Berlin (2009)
  • 2008 SME Gold Medal
  • 2009 ASME/MED Outstanding Service Award
  • 2010 NAMRI/SME Kornel Ehmann Outstanding Lifetime Service Award
  • 2012 ASME: Blackall Machine Tool and Gage Award
  • 2012 ASME: Milton C. Shaw Manufacturing Research Medal
  • 2018 SME Education Award
  • 2018 Hideo Hanafusa Outstanding Investigator Award (American Society of Mechanical Engineers (ASME) and the Institute of Systems, Control and Information Engineers (ISCIE) in Japan)
  • 2019 ASME Kornel F. Ehmann Manufacturing Medal
  • 2021 SME Frederick W. Taylor Research Medal

Significant Professional Service

  • 1994 Chair of the Manufacturing Engineering Division of ASME
  • 2001 Technical Editor: Trans. ASME – J. of Manufacturing Science and Engineering
  • 2001 Editorial Board: SME Journal of Manufacturing Processes
  • 2003 Editorial Board: Int. Journal of Machine Tools and Manufacture
  • 2004 Editorial Board: International Journal of Precision Engineering and Manufacturing (IJPEM)
  • 2004 Panel Chair for the WTEC study on “Miniaturization of Manufacturing Technologies: The Microfactory-of-the-future”
  • 2005 President of NAMRI/SME (North American Manufacturing Research Institution of SME)
  • 2006 Advisory and Organizing Committee for the “International Conference on Micromanufacturing – ICOMM” (Founding Member)
  • 2007 President of the International Institution for Micro-Manufacturing (I2M2)
  • 2008 Advisory Board of the Journal of Solid Mechanics and Materials Engineering; The Japan Society of Mechanical Engineers
  • 2013 Founding Editor in Chief: Manufacturing Letters, SME/Elsevier
  • 2014 DMDII – Technical Lead for the Intelligent Machines Thrust
  • 2018 Editorial Board Member - Journal of Manufacturing and Materials Processing
  • 2019 Editorial Board Member – International Journal of Extreme Manufacturing (IJEM)

Selected Publications

K. Pallav, I. Saxena, K. Ehmann, “Laser Induced Plasma Micro-Machining Process (LIP-MM) – Principles and Performance,” ASMA Trans; J. Micro Nano-Manuf. Sep 2015, 3(3): 031004.

Q. Zeng, K. Ehmann, and J. Cao. "Design of General Kinematotropic Mechanisms." Robotics and Computer-Integrated Manufacturing, 38 (2016): 67-81.

H-S. Yoon, K. Ehmann, “Dynamics and Stability of Micro-Cutting Operations,” International Journal of Mechanical Sciences, 115-116 (2016) 81-92.

D. Che, W.L. Zhu, K. Ehmann, "Chipping and Crushing Mechanisms in Orthogonal Rock Cutting" International Journal of Mechanical Sciences Corresponding, Volume 119, December 2016, Pages 224–236.

W-L. Zhu, Y. He, K. Ehmann, “Modeling of the Effect of Phase Shift on Cutting Performance in Elliptical Vibration Cutting,” International Journal of Advanced Manufacturing Technology (2017) 92:3103–3115, DOI 10.1007/s00170-017-0366-2.

Y. Shi, J. Cao, K. Ehmann, “Response of High-Pressure Micro Water Jets to Static and Dynamic Non-Uniform Electric Fields,” ASME Trans: J. of Micro and Nano Manufacturing, Volume 6, Issue 2, June 2018, Article number 021006.

H. Ren, F. Li, N. Moser, D. Leem, T. Li, K. Ehmann, J. Cao, General contact force control algorithm in double-sided incremental forming, CIRP Annals, Volume 67, Issue 1, 2018, Pages 381-384.

D. Pritchet, N. Moser, K. Ehmann, J. Cao, J. Huang, “Quantifying Discretization Errors in Electrophoretically-guided Micro Additive Manufacturing,” Micromachines, 2018 Sep; 9(9): 447; doi:10.3390/mi9090447.

M. Giovannini, J. Cao, K. Ehmann, “Design and Models of Helical Needle Geometries for Core Biopsies,” Journal of the Mechanical Behavior of Biomedical Materials, Journal of the Mechanical Behavior of Biomedical Materials (2019) Volume 90, February 2019, Pages 113-124.

S. Webster, S. Wolff, J. Bennett, T. Sun, J. Cao, K. Ehmann, “Porosity Formation and Meltpool Geometry Analysis Using High-speed, in situ Imaging of Directed Energy Deposition,” Microsc. Microanal. 25 (Suppl 2), 2019, 2556, doi:10.1017/S1431927619013515.

N. Martinez-Prieto, G. Fratta, J, Cao, K. Ehmann, “Deposition of Variable Bead Diameter Arrays by Self-Focusing Electrohydrodynamic Jets,” Journal of Micro- and Nano-Manufacturing, September 2018, Vol. 6 / 031003-1, [DOI: 10.1115/1.4040450].

H. Ren, J. Xie, S. Liao, D. Leem, K. Ehmann, J. Cao, “In-situ Springback Compensation in Incremental Forming,” CIRP Annals - Manufacturing Technology, 68 (2019) 317–320.

X. He, M. Song, Y. Du, Y. Shi, B.A. Johnson, K. Ehmann, Y-W. Chung, Q. J. Wang, "Surface Hardening of Metals at Room Temperature by Nanoparticle-Laden Cavitating Waterjets," Journal of Materials Processing Tech. 275 (2020) 116316.

M. Mozaffar, R. Bostanabad, W. Chen, K. Ehmann, J. Cao, and M.A. Bessa, “Deep Learning Predicts Path-dependent Plasticity,” PNAS, (www.pnas.org/cgi/doi/10.1073/pnas.1911815116) .

D. Pritchet, K. Ehmann, J. Cao, J. Huang, “Manipulation and Localized Deposition of Particle Groups with Modulated Electric Fields,” Micromachines, 2020, 11, 226; doi:10.3390/mi11020226.

J. Xie, K. Ehmann and J. Cao, “Simulation of Ultrashort Laser Pulse Absorption at the Water-Metal Interface in Laser-Induced Plasma Micro-Machining (LIPMM),” ASME Transactions: Journal of Micro- and Nano-Manufacturing, J. Micro Nano-Manuf. Dec 2020, 8(4): 041009 .

S. Webster, H. Lin, F. Carter, K. Ehmann, J. Cao, “Physical Mechanisms in Hybrid Additive Manufacturing: A Process Design Framework,” Journal of Materials Processing Tech., Volume 291, May 2021, 117048

In the Classroom

Professor Ehmann teaches courses in the areas of design and manufacturing: Introduction to Design and Manufacturing and one or more of the courses in the Computer Integrated Manufacturing sequence, i.e., Manufacturing Processes, CAD/CAM, and Manufacturing Automation. All these courses heavily rely on regular hands-on laboratory exercises with state-of-the-art software and industrial quality equipment that go well beyond typical laboratory experiences. 

Professor Ehmann also teaches courses at the graduate level. These include: (a) Computer Control in Manufacturing, which emphasizes the use of digital and adaptive control methods for process and motion control in a variety of machine tools and robots; (b) Metal Cutting, in which the mechanics of material removal processes, their stability, and pragmatic implementation are studied; and (c) Micro-manufacturing, which focuses on the emerging field of miniaturization technologies through the consideration of the associated design, processing, and metrology issues.

Prof. Ehmann has supervised over 50 MS and nearly 60 Ph.D. students.