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Title: Simulateneous Hierarchiacal and Multi-Level Optimization for Material characterization and Design of Experiments

Source:  Michopoulos JG, Furukawa T, Hermanson JC, Lambrakos SG. Simultaneous hierarchical and multi-level optimization for material characterization and design of experiments. In: Proceedings of the ASME International Design Engineering Technical Conferences and Computers and Information in Engineering Conference--2007: [held] September 4-7, 2007, Las Vegas, Nevada, USA. Paper DETC2007-35470, 9 pages. New York, N.Y. : American Society of Mechancial Engineers, c2007. DVD ISBN 0-7918-3806-4.

Author(s)Michopoulos, Hermanson, Furukawa, Lambrakos

Publication Year: 2007  View PDF »

Category: Conference Proceedings

Abstract: A hierarchical algorithmic and computational scheme based on a staggered design optimization approach is presented. This scheme is structured for unique characterization of many continuum systems and their associated datasets of experimental measurements related to their response characteristics. This methodology achieves both online (real-time) and offline design of optimum experiments required for characterization of the material system under consideration, while also achieving a constitutive characterization of the system. The approach assumes that mechatronic systems are available for exposing specimens to multidimensional loading paths and for the acquisition of data associated with stimulus and response behavior. Material characterization is achieved by minimizing the difference between system responses that are measured experimentally and predicted based on model representation. The performance metrics of the material characterization process are used to construct objective functions for the design of experiments at a higher-level optimization. The distinguishability and uniqueness of solutions that characterize the system are used as two of many possible measures adopted for construction of objective functions required for design of experiments. Finally, a demonstration of the methodology is presented that considers the best loading path of a two degree-of-freedom loading machine for characterization of the linear elastic constitutive response of anisotropic materials.

Keywords: design optimization, material characterization, design of experiments, mechatronic systems, constitutive response, anisotropic materials, composites.

File size: 632 kb(s)

Date posted: 06/18/2009
Current FPL Scientist associated with this product
Hermanson, John C.
Research General Engineer

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