ANDRYAS MAWARDI
Ph.D. in Mechanical Engineering, October, 2002
Advanced Materials and Technologies Laboratory
University of Connecticut
Presently with the Advanced Materials and Technologies Laboratory, University of Connecticut
STRATEGIES FOR OPTIMAL DESIGN AND MANUFACTURING OF ADVANCED MATERIALS AND FUEL CELLS UNDER UNCERTAINTY
Two important considerations in the manufacturing of advanced materials, in general, are the manufacturing time and the reliability of the process in fabricating parts of consistent quality, in the face of inevitable process uncertainties. Both considerations manifest themselves in the overall manufacturing cost which is constantly sought to be minimized. The work addresses both aspects of a materials fabrication process, with particular focus on the manufacturing of thermosetting matrix composites. A novel strategy of using embedded resistive heating is investigated for rapid curing of composites. A framework for stochastic analysis and design under uncertainty is developed and is applied to optimization of a composite materials fabrication process, fuel cells, and of a MEMS device under uncertainty. Strategies for reducing the computation time related to the stochastic analysis and optimization are also investigated. The major contributions offered by the research include a new technique for rapid curing, the development of a framework for systematic analysis and design of processes and devices under uncertainty, which is the first systematic study in this regard, and new computational methods to accelerate computations associated with stochastic analysis and optimization under uncertainty.
Publications
C-01-01: A. Mawardi and R. Pitchumani, "Optimization of Cure Cycle for Thermosetting Composites Fabrication Under Uncertainty," INFORMS (Institute for Operations Research and the Management Sciences) International Conference, Maui, HI, June 2001.
J-03-02: [Abstract | Request Reprint] A. Mawardi and R. Pitchumani, "Optimal Temperature and Current Cycles for Curing of Composites Using Internal Resistive Heating," ASME Journal of Heat Transfer, 125(1), pp. 126-136, 2003.
J-04-06: [Abstract | Request Reprint] A. Mawardi and R. Pitchumani, "Cure Cycle Design for Thermosetting-Matrix Composites Fabrication under Uncertainty," Annals of Operations Research, 132, pp. 19-45, 2004.
J-05-05: [Abstract | Request Reprint] A. Mawardi and R. Pitchumani, "Design of Microresonators under Uncertainty," Journal of Microelectromechanical Systems, 14(1), 2005.
J-05-06: [Abstract | Request Reprint] A. Mawardi and R. Pitchumani, "SAMS: Stochastic Analysis with Minimal Sampling — A Fast Algorithm for Analysis and Design Under Uncertainty," ASME Journal of Mechanical Design, 127 (4), pp. 558-571, 2005.
J-05-08: [Abstract | Request Reprint] A. Mawardi, F. Yang, and R. Pitchumani, “Optimization of the Operating Parameters of a Proton Exchange Membrane Fuel Cell for Maximum Power Density,” ASME Journal of Fuel Cell Science and Technology, 2(2), pp. 121-135, 2005.
J-05-09: [Abstract | Request Reprint] A. Mawardi and R. Pitchumani, “ Design of a Micromachined Force Gauge under Uncertainty,” Journal of Micromechanics and Microengineering, 15, pp. 2353–2365, 2005.
C-05-01: Y. Zhang, A. Mawardi, and R. Pitchumani, “Analysis and Design of Proton Exchange Membrane Fuel Cells For Maximum Power Density and Uniform Current Density Distritbution,” First European Fuel Cell Technology and Applications Conference , December 14–16, 2005, Rome , Italy .
J-06-01: [Abstract | Request Reprint] F. Zhang, A. Mawardi, E. Santos, Jr., R. Pitchumani, and L.E.K. Achenie, “Examination of Load-Balancing Methods to Improve Efficiency of a Composite Materials Manufacturing Process Simulation Under Uncertainty using Distributed Computing,” Future Generation Computer Systems---The International Journal of Grid Computing: Theory, Methods and Applications, 22, pp. 571-587, 2006.
J-06-03: [Abstract | Request Reprint] C. Acquah, I. Datskov, A. Mawardi, F. Zhang, L.E.K. Achenie, R. Pitchumani, and E. Santos, “Optimization Under Uncertainty of a Composite Fabrication Process Using a Deterministic One-Stage Approach,” Computers and Chemical Engineering, 30, pp. 947-960, 2006.
J-06-06: [Abstract | Request Reprint] Y. Zhang, A. Mawardi, and R. Pitchumani, “Effects of Operating Parameters on the Uniformity of Current Density Distribution in Polymer Electrolyte Membrane (PEM) Fuel Cells,” ASME Journal of Fuel Cell Science and Technology, 3(4), pp. 464-476, 2006.
J-06-07: [Abstract | Request Reprint] C. Acquah, I. Datskov, A. Mawardi, F. Zhang, L.E.K. Achenie, R. Pitchumani, and E. Santos, “ Optimization of an Optical Fiber Drawing Process Under Uncertainty,” Industrial and Engineering Chemistry Research, 45, pp. 8475-8483, 2006.
J-06-08: [Abstract | Request Reprint] A. Mawardi and R. Pitchumani, “ Effects of Parameter Uncertainty on the Performance Variability of Proton Exchange Membrane (PEM) Fuel Cells,” Journal of Power Sources, 160, pp. 232-245, 2006.
C-06-01: Y. Xiao, A. Mawardi, and R. Pitchumani, “Theoretical Model of Micromold Filling by Nanoparticulate Slurries,” International Heat Transfer Conference, Sydney , Australia , August 2006.
C-07-01: A. Mawardi and R. Pitchumani, “Multiscale Simulation of Sintering of Nanoparticulate Micropreforms in a Microfabrication Process,” International Conference on Integration and Commercialization of Micro and Nano-Systems, Sanya, Hainan, China, January 2007.
J-07-03: [Abstract | Request Reprint] Y. Zhang, A. Mawardi, and R. Pitchumani, “Numerical Studies on an Air-breathing Proton Exchange Membrane (PEM) Fuel Cell Stack,” Journal of Power Sources, 173, pp. 264-276, 2007.
J-08-01: [Abstract | Request Reprint] A. Mawardi, Y. Xiao, and R. Pitchumani, “Theoretical Analysis of Capillary-driven Nanoparticulate Slurry Flow During a Micromold Filling Process,” International Journal of Multiphase Flow, 34, pp. 227-240, 2008.
J-08-02: [Abstract | Request Reprint] A. Mawardi and R. Pitchumani, “Numerical Simulations of an Optical Fiber Drawing Process Under Uncertainty,” IEEE Journal of Lightwave Technology, 26(2), In Press, 2008.
Presentations
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