COURSES TAUGHT AT IIT
MMAE 370/476: Materials Lab I/II. This undergraduate course is designed to introduce students to laboratory skills and techniques that are required for microstructural characterization and quantification of physical and mechanical properties of materials. Students are trained to use standard and advanced metallographic techniques and interpret microstructures using optical and electron microscopes.
MMAE 372: Aerospace Materials Lab. This undergraduate course is aimed at exposing students to the mechanical behavior and microstructural characterization of aerospace materials including advanced metal alloys, polymers, ceramics, and composites. Introduction to mechanical testing techniques for assessing the properties and performance of aerospace materials. Evaluation of structural performance in terms of materials selection, processing, service conditions, and design.
MMAE 472: Advanced Aerospace Materials. Principles of materials and process selection for minimum weight design in aerospace applications. Advanced structural materials for aircraft fuselage and propulsion applications. Materials for space vehicles and satellites. Environmental degradation in aerospace materials.
MMAE 482: Composites. This course focuses on metal, ceramic and carbon matrix composites. Types of composite. Synthesis of precursors. Fabrication of composites. Design of composites. Mechanical properties and environmental effects. Applications.
MMAE 561: Solidification. This graduate course is designed to introduce students to both the theoretical and industrially pertinent aspects of solidification and solidification processing. With respect to fundamentals, the student learns about the kinetics of solidification and how thermodynamic parameters, such as entropy and free energy, govern the growth of the solid. The classic Mullins and Sekerka analysis describing how perturbations affect interfacial stability and the formation of dendrites during solidification is derived as part of this course. Practical issues covering the control of cast structures, the formation of casting defects, heat flow and interfacial heat transfer are also covered in this course. Finally, the fundamental concepts are applied to solve actual problems related to the continuous casting of steel, solidification of single crystals, spray atomization and the production of bulk metallic glasses.
MMAE 485: Manufacturing Processes. This course is designed for senior mechanical engineering students and introduces them to the fundamentals of solidification, deformation processing, machining and joining. The course begins with an overview of the intrinsic properties of different classes of materials and the features that make them unique. The students then learn about the manufacturing characteristics of the different classes of engineering materials and why certain manufacturing processes are more ideally suited than others. The course provides a detailed description of both conventional and advanced manufacturing processes. The underlying mechanisms and physics corresponding to each of the processes are highlighted and the governing equations are derived. In addition to conventional processes such as casting, rolling and milling, advanced manufacturing techniques and tools (rapid-prototyping, MEMS, CAD/CAM, etc) are also discussed.
MMAE 566: Problems in High Temperature Materials. The material for this graduate course was developed around my research interests. This course covered the fundamentals of strengthening and corrosion in high temperature structural materials, namely stainless steels, titanium alloys, Ni-base superalloys, composites and ceramics. The physical metallurgy of these material systems was discussed and students were exposed to advanced concepts for design of new materials that utilize thermodynamic/kinetic models. Problems pertaining to dislocation theory and plasticity at elevated temperatures were also covered. Finally, the degradation mechanisms associated with environmental attack, such as hot corrosion and oxidation were presented.
MMAE 576: Materials and Process Selection. This graduate-level course covers many of the design issues related to materials and process selection. The theory behind design constraints, multi-parameter optimization, materials and process selection is covered in detail. Students are exposed to a wide variety of engineering problems in which Ashby material property selection charts are used. Also covered in this course are issues pertaining to industrial design, sustainability and the design of multifunctional hybrid systems. Engineering case studies are used in class to illustrate many of the design concepts and the students were challenged to devise solutions to problems where there were conflicting objectives. The course culminates with an in-depth discussion on “innovation” in both materials and processing can serve as enabling technologies that dictate the discovery of new products and applications.
COURSES TAUGHT AT THE UNIVERSITY OF CAMBRIDGE
C12: Plasticity and Deformation Processing. This third-year course for undergraduate students in the Dept of Materials Science and Metallurgy is designed to cover the concepts of plasticity occurring across multiple length scales. Dislocation theory and tensor mathematics are applied to describe yielding in crystalline materials. Continuum plasticity is also covered in detail as part of the course. Various yield criteria, including Tresca and von Mises, are derived and validated experimentally. Advanced plastic strain analyses (Levy-Mises), concepts of plane strain and plane stress are also introduced. Finally, the course concludes with a detailed physical description of slip-line field theory and the application of Hencky relations to estimate the forces required for plastic deformation.
C15: Fracture, Fatigue and Creep. The goal of this third-year undergraduate course was to examine the use of fracture mechanics in the prediction of mechanical failure. The various macroscopic and microscopic mechanisms for failure are presented and derive the Griffith analysis for calculating the energy release rate during fracture. The role of stress intensity factors, geometry and constraint are all discussed. Concepts pertaining to linear elastic and elastic-plastic fracture mechanics are introduced. Critical stress intensities and alternative failure prediction parameters are calculated and used in example problems. Terminology used to describe fatigue cycles, mean stress ratios, S-N curves, strain and load control are defined. Life prediction relations, such as Goodman’s Rule and Miner’s Law are used to relate laboratory test data to real life service data. Finally, the micro-mechanisms of fatigue damage are presented and used to illustrate critical features during failure analysis.
M2: Solidification and Powder Processing. This fourth-year graduate course provides the opportunity for students to learn about the theory and commercial practice behind solidification processing. The course begins with a description of the thermodynamic and kinetic relations governing the solid-to-liquid phase transformation. Free energy changes and limitations to growth velocities are discussed. The influence of solute redistribution and surface tension on dendrite formation is examined. The classic Mullins and Sekerka perturbation analysis is derived. Commercial solidification practices are also covered and the importance of heat flow and convection on the cast structure is discussed. Phenomena occurring within the dendritic mushy zone and casting defects are covered in detail. Finally, the course concludes with an analysis of the physics associated with various casting processes, such as, continuous casting, directional solidification, Czochralski growth, float zoning, melt spinning and splat quenching.
MMAE 370/476: Materials Lab I/II. This undergraduate course is designed to introduce students to laboratory skills and techniques that are required for microstructural characterization and quantification of physical and mechanical properties of materials. Students are trained to use standard and advanced metallographic techniques and interpret microstructures using optical and electron microscopes.
MMAE 372: Aerospace Materials Lab. This undergraduate course is aimed at exposing students to the mechanical behavior and microstructural characterization of aerospace materials including advanced metal alloys, polymers, ceramics, and composites. Introduction to mechanical testing techniques for assessing the properties and performance of aerospace materials. Evaluation of structural performance in terms of materials selection, processing, service conditions, and design.
MMAE 472: Advanced Aerospace Materials. Principles of materials and process selection for minimum weight design in aerospace applications. Advanced structural materials for aircraft fuselage and propulsion applications. Materials for space vehicles and satellites. Environmental degradation in aerospace materials.
MMAE 482: Composites. This course focuses on metal, ceramic and carbon matrix composites. Types of composite. Synthesis of precursors. Fabrication of composites. Design of composites. Mechanical properties and environmental effects. Applications.
MMAE 561: Solidification. This graduate course is designed to introduce students to both the theoretical and industrially pertinent aspects of solidification and solidification processing. With respect to fundamentals, the student learns about the kinetics of solidification and how thermodynamic parameters, such as entropy and free energy, govern the growth of the solid. The classic Mullins and Sekerka analysis describing how perturbations affect interfacial stability and the formation of dendrites during solidification is derived as part of this course. Practical issues covering the control of cast structures, the formation of casting defects, heat flow and interfacial heat transfer are also covered in this course. Finally, the fundamental concepts are applied to solve actual problems related to the continuous casting of steel, solidification of single crystals, spray atomization and the production of bulk metallic glasses.
MMAE 485: Manufacturing Processes. This course is designed for senior mechanical engineering students and introduces them to the fundamentals of solidification, deformation processing, machining and joining. The course begins with an overview of the intrinsic properties of different classes of materials and the features that make them unique. The students then learn about the manufacturing characteristics of the different classes of engineering materials and why certain manufacturing processes are more ideally suited than others. The course provides a detailed description of both conventional and advanced manufacturing processes. The underlying mechanisms and physics corresponding to each of the processes are highlighted and the governing equations are derived. In addition to conventional processes such as casting, rolling and milling, advanced manufacturing techniques and tools (rapid-prototyping, MEMS, CAD/CAM, etc) are also discussed.
MMAE 566: Problems in High Temperature Materials. The material for this graduate course was developed around my research interests. This course covered the fundamentals of strengthening and corrosion in high temperature structural materials, namely stainless steels, titanium alloys, Ni-base superalloys, composites and ceramics. The physical metallurgy of these material systems was discussed and students were exposed to advanced concepts for design of new materials that utilize thermodynamic/kinetic models. Problems pertaining to dislocation theory and plasticity at elevated temperatures were also covered. Finally, the degradation mechanisms associated with environmental attack, such as hot corrosion and oxidation were presented.
MMAE 576: Materials and Process Selection. This graduate-level course covers many of the design issues related to materials and process selection. The theory behind design constraints, multi-parameter optimization, materials and process selection is covered in detail. Students are exposed to a wide variety of engineering problems in which Ashby material property selection charts are used. Also covered in this course are issues pertaining to industrial design, sustainability and the design of multifunctional hybrid systems. Engineering case studies are used in class to illustrate many of the design concepts and the students were challenged to devise solutions to problems where there were conflicting objectives. The course culminates with an in-depth discussion on “innovation” in both materials and processing can serve as enabling technologies that dictate the discovery of new products and applications.
COURSES TAUGHT AT THE UNIVERSITY OF CAMBRIDGE
C12: Plasticity and Deformation Processing. This third-year course for undergraduate students in the Dept of Materials Science and Metallurgy is designed to cover the concepts of plasticity occurring across multiple length scales. Dislocation theory and tensor mathematics are applied to describe yielding in crystalline materials. Continuum plasticity is also covered in detail as part of the course. Various yield criteria, including Tresca and von Mises, are derived and validated experimentally. Advanced plastic strain analyses (Levy-Mises), concepts of plane strain and plane stress are also introduced. Finally, the course concludes with a detailed physical description of slip-line field theory and the application of Hencky relations to estimate the forces required for plastic deformation.
C15: Fracture, Fatigue and Creep. The goal of this third-year undergraduate course was to examine the use of fracture mechanics in the prediction of mechanical failure. The various macroscopic and microscopic mechanisms for failure are presented and derive the Griffith analysis for calculating the energy release rate during fracture. The role of stress intensity factors, geometry and constraint are all discussed. Concepts pertaining to linear elastic and elastic-plastic fracture mechanics are introduced. Critical stress intensities and alternative failure prediction parameters are calculated and used in example problems. Terminology used to describe fatigue cycles, mean stress ratios, S-N curves, strain and load control are defined. Life prediction relations, such as Goodman’s Rule and Miner’s Law are used to relate laboratory test data to real life service data. Finally, the micro-mechanisms of fatigue damage are presented and used to illustrate critical features during failure analysis.
M2: Solidification and Powder Processing. This fourth-year graduate course provides the opportunity for students to learn about the theory and commercial practice behind solidification processing. The course begins with a description of the thermodynamic and kinetic relations governing the solid-to-liquid phase transformation. Free energy changes and limitations to growth velocities are discussed. The influence of solute redistribution and surface tension on dendrite formation is examined. The classic Mullins and Sekerka perturbation analysis is derived. Commercial solidification practices are also covered and the importance of heat flow and convection on the cast structure is discussed. Phenomena occurring within the dendritic mushy zone and casting defects are covered in detail. Finally, the course concludes with an analysis of the physics associated with various casting processes, such as, continuous casting, directional solidification, Czochralski growth, float zoning, melt spinning and splat quenching.