Andryas Mawardi

Research Project

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

1. 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.
2. A. Mawardi and R. Pitchumani, "Optimal Temperature and Current Cycles for Curing of Composites Using Embedded Resistive Heating Elements," ASME Journal of Heat Transfer, 125(1), 126-136, 2003.
3. A. Mawardi and R. Pitchumani, "Cure Cycle Design for Thermosetting-Matrix Composites Fabrication under Uncertainty," Annals of Operations Research, 132, 19-45, 2004.
4. A. Mawardi and R. Pitchumani, "Design of Microresonators under Uncertainty," Journal of Microelectromechanical Systems, 14(1), 63-69, 2005.
   
5. 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), 558-571, 2005.
6. 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), 121-135, 2005.
7. A. Mawardi and R. Pitchumani, "Design of a Micromachined Force Gauge under Uncertainty," Journal of Micromechanics and Microengineering, 15, 2353-2365, 2005.
8. Y. Zhang, A. Mawardi, and R. Pitchumani, "Analysis and Design of Proton Exchange Membrane Fuel Cells For Maximum Power Density and Uniform Current Density Distribution," First European Fuel Cell Technology and Applications Conference, December 14-16, 2005, Rome, Italy.
9. 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, 22, 571-587, 2006.
10. 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, 947-960, 2006.
11. Y. Zhang, A. Mawardi, and R. Pitchumani, "Effects of Operating Parameters on the Current Density Distribution in Proton Exchange Membrane Fuel Cells," ASME Journal of Fuel Cell Science and Technology, 3(4), 464-476, 2006.
12. 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, 8475-8483, 2006.
13. 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, 232-245, 2006.
14. Y. Xiao, A. Mawardi, and R. Pitchumani, "Theoretical Model of Micromold Filling by Nanoparticulate Slurries," International Heat Transfer Conference, Sydney, Australia, August 2006.
15. 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.
16. 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, 264-276, 2007.
17. 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, 227-240, 2008.
18. A. Mawardi and R. Pitchumani, "Numerical Simulations of an Optical Fiber Drawing Process Under Uncertainty," IEEE Journal of Lightwave Technology, 26(5), 580-587, 2008.
19. A. Mawardi and R. Pitchumani, "Simulation of Sintering of Nanoparticulate Micropreforms in a Microfabrication Process," Acta Materialia, 57(6), 1975-1987, 2009.
20. A. Mawardi and R. Pitchumani, "Optical Fiber Drawing Process Model Using an Analytical Neck-down Profile," IEEE Photonics Journal, 4(2), 620-629, 2010.

Sponsors