Contact Information

Position: Assistant Professor Primary Office:      EDRB, Room 251                                Georgia Institute of Technology       210 Technology Circle      Savannah, Georgia 31407 Phone: (912) 966-6771 Fax: (912) 966-7910 Email: schoi@me.gatech.edu URL:   http://www.me.gatech.edu/faculty/choi.shtml   http://www.gtsav.gatech.edu/go/faculty/choi Secondary Office (Atlanta Campus):      MaRC, Room 259                                 Georgia Institute of Technology       813 Ferst Drive      Atlanta, Georgia 30332 Phone: (404) 894-3256  Fax: (04) 894-3924

Research Interests

Dr. Choi’s research interests include structural reliability and probabilistic mechanics, statistical approaches to design of mechanical systems, multidisciplinary design optimization, and information engineering for complex engineered systems. In his research, he combines state-of-the-art numerical techniques in statistical methods and structural analysis methods with innovative uncertainty quantification techniques. His current research focus is on the development of robust simulation and decision-support tools to assist the management of complex engineered systems involving multi-scale products and distributed real-time systems. He has received awards for his research and scholarship, including a competitive Fellowship award from MIT for research in computational mechanics. He is the principal author of a graduate-level textbook on the topics of probabilistic mechanics and reliability-based design optimization (Reliability-based Structural Design, Springer, 2006). He is a member of AIAA and a member of Tau Beta Pi, the engineering honor society. He is a reviewer of the AIAA Journal, the ASME Journal, and the Journal of Structural and Multidisciplinary Optimization on the topics of uncertainty quantification and design optimization.

Publications

Textbook

Journal Articles

• Choi, S., “Reliability Assessment using Stochastic Local Regression,” International Journal of Reliability and Safety, Special Issue, 2008, (in press).
• Schaefer, D., Panchal, J.H., Choi, S., and Mistree F., “Strategic Design of Engineering Education for the Flat World,” International Journal of Engineering Education, Vol. 24, No. 2, 2008, pp. 274-282.
• Choi, S., Grandhi, R.V., Canfield, R.A. and Pettit, C.L., “Polynomial Chaos Expansion with Latin Hypercube Sampling for Estimating Response Variability,” AIAA Journal, Vol. 42, No. 6, June 2004, pp. 1191-1198.
• Choi, S., Grandhi, R.V., and Canfield, R.A., “Structural Reliability under non-Gaussian Stochastic Behavior,” Computers and Structures, Vol. 82, May 2004, pp.1113-1121.
• Choi, S., Grandhi, R.V., and Canfield, R.A., “Robust Design of Mechanical Systems via Stochastic Expansion,” International Journal of Materials and Product Technology, Vol. 25, 2006, pp. 127-143.
• Choi, S., Canfield, R.A, and Grandhi, R.V.,  “Estimation of Structural Reliability for Gaussian Random Fields,” Structure & Infrastructure Engineering, Nov. 2005.

Conference Papers

• Patel, J., and Choi, S., “Optimal Synthesis of Mesostructured Materials under Uncertainty,” 50th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Material Conference and 5th AIAA Multidisciplinary Design Optimization Specialist Conference, Palm Springs, CA, May 4-7, 2009.
• Patel, J., and Choi, S., “Design of Mesostructured Materials under Uncertainty,” Proceedings of the ASME Conference on Smart Materials, Adaptive Structures and Intelligent Systems, SMASIS2008-590, Ellicott, MD, October 28-30, 2008.
• Choi, S., “Reliability Assessment via Stochastic Expansion with Local Regression Method,” 49th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Material Conference and 10th AIAA Non-Deterministic Analysis Conference, AIAA-2008-1982, Schaumburg, IL, April 7-10, 2008.
• Choi, S., “Structural Integrity Prediction via Stochastic Local Regression,” 3rd International Workshop on Reliable Engineering Computing, Savannah, GA, USA, February 20-22, 2008.
• Choi, S., Fathianathan, M. and D. Schaefer, “Optimization of Complex Engineered Systems Under Risk and Uncertainty” 2007 ASME International Design Engineering Technical Conferences & Computers and Information in Engineering Conference, DETC2007-34678, Las Vegas, NV, USA, September 4-7, 2007.
• Schaefer, D., Panchal, J.H., Choi, S. and Mistree, F., “Strategic Design of Engineering Education for the Flat World,” Proceedings of the MUDD Design Workshop VI: Design and Engineering Education in a Flat World, Harvey Mudd College, Claremont, CA, USA, May 23-25, 2007.
• Choi, S., Grandhi R. V., and Canfield R. A., “Reliability Assessment of Structural Systems with Random Fields,” 30th Annual Dayton-Cincinnati Aerospace Science Symposium, Dayton, Ohio, 2005.
• Choi, S., Grandhi R. V., and Canfield R. A., “Optimization of Stochastic Mechanical Systems using Polynomial Chaos Expansion,” 10th AIAA/ISSMO Multidisciplinary Analysis and Optimization Conference, Albany, NY, Aug. 2004.
• Choi, S., Grandhi R. V., and Canfield R. A., “Stochastic Modeling and Optimization of Complex Structural Systems,” 29th Annual Dayton-Cincinnati Aerospace Science Symposium, Dayton, Ohio, 2004.
• Choi, S., Grandhi R. V., and Canfield R. A., “Propagation of Uncertainty in Complex Structural Systems using Stochastic Approach,” AIAA/ICAS International Air and Space Symposium:The Next 100 Years, Dayton, OH, July 2003.
• Choi, S., Grandhi R. V., and Canfield R. A., “Propagation of non-Gaussian Stochastic Behavior using the Polynomial Chaos Expansion,” Second M.I.T. Conference on Computational Fluid and Solid Mechanics, M.I.T Cambridge, MA. June, 2003.
• Choi, S., Grandhi, R.V., Canfield, R.A., and Pettit, C.L., “Polynomial Chaos Expansion to Uncertainty Analysis using Latin Hypercube Sampling,” 44th AIAA SDM Conference, Norfolk, VA, April 2003, AIAA 2003-1749.
• Choi, S., Grandhi R. V., and Canfield R. A., “Reliability Analysis of a Large Computational Model using Polynomial Chaos Expansion,” SAE 2003 World Congress, 2003-01-0465, Detroit MI, March 3-6, 2003.
• Choi, S., Grandhi R. V., and Canfield R. A., “Stochastic Finite Element Analysis for Uncertainty Quantification,” 27th Annual Dayton-Cincinnati Aerospace Science Symposium,” Dayton, Ohio, 2002.

Graduate Students

Current Graduate Students

1. Jiten Patel (MS), Reliability-based Topology Optimization for Cellular Material Structure, started Fall 2007.

2. Alex Ruderman (MS), Decision Making in Reliability-based Design, started Fall 2007.

3. Abhishek Kumar (MS & Ph.D.), Risk-based Synthesis of Robust Intelligent Structures, started Fall 2008.