Keywords and Phrases
Materials by design
"In applications where the performance of engineered systems may be limited by the properties and performance of the materials, substantial improvement can be achieved by developing a design methodology to synthesize the optimal microstructure that will satisfy macroscopic user defined design criteria. Developing such a systematic design procedure entails the development of models or simulations tor expressing the relationships between the microstructure and macroscopic properties. Such correlations can then serve as inputs to determine the optimal microstructure.
To develop the vision of "design of materials by microstructural optimization," the first paper presents a methodology to tailor the microstructure of alloys. A genetic algorithm is used to optimize the microstructure of an Al-Mg-Sc-Zr alloy to satisfy user defined requirements on low temperature strength, ductility and high temperature strength. In the second paper, the focus is on simulating the motion of dislocation using known dislocation-particle interaction physics. Particle size distribution effects, neglected in the theoretical strength expressions, are considered in the simulation. Shear stress results are presented for an Al-Mg-Sc-Zr alloy and compared with analytical values.
Efforts, such as those considered in the study, aimed at resolving the challenge of converting from a deductive cause/effect approach to inductive goal based approach will be of much practical value to materials developers and system designers. Advanced materials can be developed in significantly shorter time and at much lower cost by employing systematic design procedures instead of relying on heuristics"--Abstract, page iv.
Mishra, Rajiv S.
Landers, Robert G.
Mechanical and Aerospace Engineering
M.S. in Mechanical Engineering
University of Missouri Research Board
University of Missouri--Rolla
Journal article titles appearing in thesis/dissertation
- Microstructural optimization of alloys using a genetic algorithm
- A study of the effect of particle size distribution on strength of precipitation-hardened alloys
ix, 54 pages
© 2004 Ambarish Jayant Kulkarni, All rights reserved.
Thesis - Restricted Access
Alloys -- Mechanical properties
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Link to Catalog Record
Electronic access to the full-text of this document is restricted to Missouri S&T users. Otherwise, request this publication directly from Missouri S&T Library or contact your local library.http://merlin.lib.umsystem.edu:80/record=b5086876~S5
Kulkarni, Ambarish J., "Design of materials by microstructural optimization" (2004). Masters Theses. 5999.
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