John Strenkowski

Professor

  • 919-515-7030
  • Engineering Building III (EB3) 4166

Dr. Strenkowski is interested in the development of computational rules for additive manufacturing, technologies for joining composites and metal parts, and nondestructive inspection techniques. His research program is attractive because additive manufacturing promises to change the world. The idea is essentially to build up parts from a bucket of powder (additive) in contrast with the traditional manufacturing method of removing material (subtractive). Furthermore, additive manufacturing replaces manufacturing plants with smaller machines that essentially can be placed in your garage.

Students in the program are exposed to a multidisciplinary environment working with mechanical and aerospace products. These students tend to be self-starters, hands-on, and have an appreciation for the practical.

In the classroom, Dr. Strenkowski teaches MAE 533 Finite Element Analysis I and MAE 415 Analysis for Mechanical Engineering Design. In MAE 533 he balances fundamentals with applications, showing the relevance of the fundamentals through interesting applications. In MAE 415, Dr. Strenkowski draws from over 30 years of experience with design of mechanical parts.

Outside of work, Dr. Stenkowski enjoys spending time with his children and grandchildren and he loves outdoor activities, time permitting.

Education

Ph.D.

Applied Mechanics

University of Virginia

M.S.

Aeronautics and Astronautics

Massachusetts Institute of Technology

B.S.

Aerospace Engineering

University of Virginia

Research Description

The long term goal of Dr. Strenkowski's research is to advance our understanding of direct digital manufacturing (DDM) of parts on demand. Presently, Dr. Strenkowski is conducting research in 1) 3D printing of complex structures, 2) development of new design rules for multifunctional parts incorporating aerodynamics and heat transfer, and 3) nondestructive inspection of additively produced parts. Within the College of Engineering, Dr. Strenkowski collaborates with Drs. Cuomo, Sandwald, Buckner, and Peters.

Publications

A finite element analysis of orthogonal rubber cutting
Yan, J., & Strenkowski, J. S. (2006), Journal of Materials Processing Technology, 174(1-3), 102-108.
An analytical finite element technique for predicting thrust force and torque in drilling
Strenkowski, J. S., Hsieh, C. C., & Shih, A. (2004), International Journal of Machine Tools & Manufacture, 44(13-Dec), 1413-1421.
Chip morphology and forces in end milling of elastomers
Shih, A. J., Luo, J., Lewis, M. A., & Strenkowski, J. S. (2004), Journal of Manufacturing Science and Engineering, 126(1), 124-130.
End milling of elastomers - Fixture design and tool effectiveness for material removal
Shih, A. J., Lewis, M. A., & Strenkowski, J. S. (2004), Journal of Manufacturing Science and Engineering, 126(1), 115-123.
An analytical finite element model for predicting three- dimensional tool forces and chip flow
Strenkowski, J. S., Shih, A. J., & Lin, J. C. (2002), International Journal of Machine Tools & Manufacture, 42(6), 723-731.
Finite element modeling of machining: From proof-of-concept to engineering applications
Athavale, S. M., & Strenkowski, J. S. (1998), Machining Science and Technology, 2(2), 317-342.
Material damage based model for predicting chip breakability
Athavale, S. M., & Strenkowski, J. S. (1997), Journal of Manufacturing Science and Engineering, 119(4b), 675-680.

View all publications via NC State Libraries

Grants

Nondesctructive Inspection (NDI) of Additively Manufactured Parts
National Institute of Standards & Technology(2/26/14 - 4/30/16)
GLF Agile Manufacturing
NCSU Aerospace Alliance Initiative (GLF Task Order)(4/01/10 - 2/28/11)
Sealy Motion Capture Project
Sealy, Inc.(11/30/-1 - 12/31/14)
Reverse Engineering Task Order
NCSU Aerospace Alliance Initiative (GLF Task Order)(7/01/09 - 6/30/10)
Agile Manufacturing GLF Task Order
NCSU Aerospace Alliance Initiative (GLF Task Order)(7/01/09 - 12/31/09)
Technical Development Projects to Support the VLCOE
US Navy-Office Of Naval Research(6/03/09 - 12/31/11)
H-46 Rotor Control Free Play Measurements Proposed System Verification (Task Order 0016)
US Navy - Naval Air Depot, Cherry Point(9/24/07 - 9/23/08)
H-46 Rotor Control Free Play Measurements Proposed System Validation (Task Order 0015)
US Navy - Naval Air Depot, Cherry Point(9/24/07 - 6/27/08)
H-46 Rotor Control Free Play Measurements Proposed System Concept (Task Order 0014)
US Navy - Naval Air Depot, Cherry Point(9/24/07 - 2/29/08)
Agile Manufacturing GLF Task Order
NCSU Aerospace Alliance Initiative (GLF Task Order)(1/01/07 - 9/30/09)