James M. Fragomeni

____________________________________________________________________________________

Campus Address Mailing Address United States Citizen

The University of Detroit P.O. Box 1446 work phone: 313- 993-3285

Mechanical Engineering Royal Oak, Michigan fax: 313-993-1409

College of Engineering & Science 48068-1446, USA jamesfrag@yahoo.com

fragomjm@udmercy.edu home phone: 248-245-4843

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Research Interests

Solid Mechanics and Materials, Aluminum Alloys, Mechanical Metallurgy, Micromechanical Modeling, Material Science, Precipitation Hardening, Welding, High Temperature Alloys, Materials Design, Strength of Materials, Microstructure-Property Relationship, Chemistry of Materials, Quantitative Microscopy

Teaching Interests

Material Science, Mechanical Behavior of Materials, Fatigue of Metals, Mechanics, Plastic Deformation, Statics and Dynamics, Strength of Materials, Heat Transfer, Statistics, Physical Metallurgy, Engineering Materials, Elasticity, Mechanical Metallurgy, Chemistry of Materials, Manufacturing Science, Chemistry.

Current Position

Assistant Professor in Mechanical Engineering at The University of Detroit Mercy, Michigan (Sept.2000-present)

University Education

Purdue University, West Lafayette, Indiana, School of Mechanical Engineering, Design Department Graduate Advisor: Professor B.M. Hillberry; Graduate Research sponsored by the National Science Foundation through the Purdue University Engineering Research Center (ERC). Materials engineering research involving microstructure and mechanical property modeling. (Nov. 1986 - Dec. 1994)

Doctor of Philosophy in Mechanical Engineering, August 1994; Course emphasis in mechanical metallurgy, material science, solid mechanics, and materials engineering. Ph.D. Thesis: "A Method to Predict the Precipitation Hardening Response of Particle Strengthened Alloys."

Master of Science in Engineering, December 1989; School of Mechanical Engineering. MS course emphasis in mechanical behavior of materials, material science, and solid mechanics. MS Thesis: "An Investigation of the Strengthening Mechanisms, Microstructure, and Processing Variables of an Al-2.6wt.%Li-0.09wt.%Zr Alloy."

Purdue University Calumet, Hammond, Indiana, School of Engineering;

Graduate Engineering Program, attended part-time while working in industry. (Sept.'85 - Jan.'86)

The University of Pittsburgh, School of Engineering, Department of Materials Science & Engineering

(Sept.’81-May’85)

Bachelor of Science in Metallurgical Engineering, with high honors, May 1985; Course emphasis in physical, process, and mechanical metallurgy, material science, advanced mathematics, and materials.

BS Senior Thesis: "The Effect on Mechanical and Fatigue Properties Induced by Sintering Powder on Titanium, Ti-6Al-4V ELI, Substrates." Research sponsored by Dynamet, Inc.

Research and Industry Experience

Engineering Research Center (ERC), Purdue University -West Lafayette, Indiana; Nov. 1986 - Aug. 1994

Worked as a graduate research assistant on a global research project sponsored by the National Science Foundation through the Purdue University Engineering Research Center for Intelligent Manufacturing Systems and the Mechanical Engineering Department. Performed thesis research in modeling the mechanical properties of several precipitation strengthened alloy systems such as aluminum alloy 2090, Ni-Al, aluminum-lithium-zirconium, and aluminum 6061.

Worked on project with ALCOA for the material processing of aluminum-lithium alloy 2090 and a aluminum-lithium-zirconium research alloy at the ALCOA Lafayette Extrusion Works. Obtained experience using Scanning Electron Microscope (SEM) and MTS hydraulic tensile testing machine. Computer experience in UNIX, SAS, and Fortran.

Developed a method to predict the precipitation strengthening response of some precipitation hardened alloys from the material processing and microstructure using a minimum number of experimental tests.

United States Steel Corporation (Gary Steel Works) - Gary, Indiana Aug. 1985 - Oct. 1986

Worked in the Quality Assurance Department. Involved with various projects to improve quality and production of cast steel sheet products, ingots, and plates. Involved in the start-up of a continuous steel casting facility. Learned continuous steel casting process, tundish and ladle metallurgy, and quality engineering. Statistical process control (SPC), SAS computer language, and process metallurgy.

Allegheny Ludlum Steel Corporation (Research Center) - Brackenridge, PA May-Sept. 1984

Worked in the Physical Metallurgy Department as a summer intern research engineer. Worked on project using grain-size statistics to determine the grain-size distributions of grain-oriented silicon steel. Developed Fortran computer software to predict the grain-size and distribution.

Whirlpool Corporation - West Lafayette, Indiana Jan.-May 1995

Worked part-time at the Manufacturing Research and Productivity Center in the area of quality control for the packaging of replacement parts. Passed Quality Certification (QC) exam to become quality certified for quality control inspection of packaging for Whirlpool replacement parts.

DoD-Ceramics & Metals Information Analysis Center - West Lafayette, Indiana Feb.-Sept. 1995

Worked as an assistant researcher at the Center for Information and Numerical Data Analysis and Synthesis (CINDAS) of Purdue University for the development of a materials databooks of the mechanical and material properties for particulate reinforced ceramic-matrix composites, and metal alloys.

Worked on a research project focusing on methods of joining ceramics to ceramics and ceramics to alloys and metals for high temperature corrosive turbine engine environment of NAVY turbine aircraft engines.

NASA Marshall Space Flight Center - Huntsville, Alabama May-Aug. 1996

Worked through the university summer faculty fellowship program through the University of Alabama. Worked on the development of theoretical models to determine and predict molten metal detachment hazards during electron beam welding exercises in space as part of the International Space Welding Experiment (ISWE). Performed experimental tests of electron beam welding in space with various weld plate metal alloy samples using a Ukranian Universal Hand Tool in an enclosed vacuum chamber.

NASA Marshall Space Flight Center - Huntsville, Alabama May-Aug. 1997

Worked in the Materials and Processes Laboratory through the summer faculty fellowship program through the University of Alabama. Worked on the development of theoretical models to determine and predict EMU fabric damage from molten metal detachment(s) and electron beam impingement(s) during electron beam welding in vacuum at low partial pressures for space welding for the International Space Welding Experiment (ISWE).

Wright Patterson Air Force Base - Dayton, Ohio June-Sept. 1998

Worked at the Air Force Research Laboratory in the Materials and Manufacturing Directorate. Research involved the mechanical behavior and microstructure studies of aluminum-lithium alloys to correlate the mechanical properties to the internal structure and processing. Studied the microstructure of aluminum-lithium alloys 2090 and AF/C458 using transmission electron microscopy and quantitative analysis.

University Experience

The University of Detroit Mercy-College of Engineering and Science, Detroit, Michigan Sept.'00-present

Working as an Assistant Professor in the Mechanical Engineering Department. To date have taught one class of Manufacturing Processes (ME382), one class of Manufacturing Processes Lab (ME383), Engineering Materials II (E582), Materials I (GCT201), Materials II (GCT202). Currently teaching two classes of Science of Materials (E317) at Ford Motor Company, and one class of Elements of Machine Design I (ME390). Publishing conference and journal papers involving aerospace aluminum alloys. Participated in the Polyurethane Elastomer Workshop at univ of detroit polymer institute.

Ohio University –College of Engineering and Technology, Athens, Ohio Sept.’97-2000.

Worked as an Assistant Professor in the Mechanical Engineering Department. Have taught five classes of Metal Processing (ME313), three classes of Thermal Design (ME417), one class of Machine Design (ME403), two classes Senior Design Lab (ME498), one class of Manufacturing Processes (ME562), two classes of Mechanical Behavior of Materials (ME563/463), and two years of student advising for Senior Design (ME499) Projects. Graduated five Masters students in Mechanical Engineering and two PACE Senior Research Scholar. Published journal and conference papers and wrote research proposals, and purchased a new quantitative image analysis light optical microscopy system. Preformed compression testing of precipitation aged aerospace and aircraft aluminum alloys. Involved in scanning and transmission electron microscopy studies of microstructure and properties of aerospace alloys 2090 and AF/C458.

The University of Alabama - College of Engineering, Tuscaloosa, Alabama Aug.'95-May'96

Worked as a Assistant Professor in the Engineering Science and Mechanics Department; Instructor for three classes of Engineering Statics (ESM-201) in two semesters, two semesters of Particle Dynamics ESM-202), one semester class of Dynamics (ESM-264), and one semester class of Mechanics of Materials (ESM-250). Also published and presented conference papers, and was involved in materials research and various departmental activities.

The University of Alabama - College of Engineering, Tuscaloosa, Alabama Aug.'96-May'97

Worked as a Assistant Professor in the Department of Aerospace Engineering & Mechanics. Taught four classes of Engineering Statics (ESM-201) and two semester classes of Mechanics of Materials (ESM-250). Taught a Quest TV course for statics as part of the University distant learning program. Published and presented papers at conferences and was active in SWE and AIAA student groups.

Research Publications

JOURNAL PUBLICATIONS

Fragomeni, J.M., Hillberry, B.M., Sanders, Jr., T.H., and Gaitatzes, A.G., "Integration of Microstructural Development and Properties Design into the CAD/CAM Environment," Transactions of the ASME, Journal of Engineering Materials and Technology, Volume 114, No. 1, pp. 34-40, January 1992.

Fragomeni, J.M., and Hillberry, B.M., “A Micromechanical Method for Predicting the Precipitation Hardening Response of Particle Strengthened Alloys Hardened by Ordered Precipitates”, Acta Mechanica, Vol. 138, pp. 185-210, December 1999.

Fragomeni, J.M., and Hillberry, B.M., “The Effect of Heat Treatment on the Microstructure and Mechanical Properties of an Aluminum Lithium Alloy”, Aluminum Transactions, An International Journal, Volume 2(1), pp. 107-120, 2000.

Fragomeni, J.M., and Hillberry, B.M., "Determining the Effect of Microstructure and Heat Treatment on the Mechanical Strengthening Behavior of an Aluminum Alloy Containing Lithium Precipitation Hardened with the δ' Al₃Li Intermetallic Phase", Journal of Materials Engineering and Performance, Vol. 9, No. 4, pp. 428-440, August 2000.

Fragomeni, J.M., "Effect of Heat Treating on the Microstructure and Fatigue Behavior of a Ti-6wt.%Al-4wt.%V ELI Alloy", Journal of Advanced Materials, Vol. 33, No. 3, pp. 18-25, July 2001.

Conference Proceedings

Fragomeni, J.M, and Hillberry, B.M., "The Effect of Heat Treating on the Precipitation Response and Microstructure of an Aluminum-Lithium-Zirconium Alloy", 20^th ASM Heat Treating Society Conference Proceedings, edited by K. Funatani, and G.E. Totten, Vol. 2, pp. 1101-1110, 2000.

Fragomeni, J.M., "The Effect of Extrusion Manufacturing and Material Processing on the Mechanical Properties and Microstructure of Aluminum-Lithium Alloys", TMS Proceedings of the Second International Conference on Processing Materials for Properties, Edited by B. Mishra, and C. Yamauchi, TMS, pp. 89-95, 2000.

Fragomeni, J.M., "The Effect of Aging on the Microstructure and Precipitation Response of an Aluminum-Lithium Alloy", Recent Advances in Solids and Structures, PVP-Vol. 415, ASME Proceedings of the 2000 Winter Annual Meeting, edited by H.H. Chung and Y.W. Kwon, pp. 105-113, 2000.

Fragomeni, J.M., "A Manufacturing Materials Approach for Relating Extrusion Deformation to Mechanical Properties and Microstructure of Aluminum-Lithium Alloys", Light Metals 2000 Metaux Legers, MetSoc 39^th Annual Conference Proceedings of the International Symposium on Light Metals, Edited by J. Kazadi and J. Masounave, pp. 295--305, 2000.

Fragomeni, J.M., "The Effect of High Temperature Aging on the Thermomechanical Behavior of Heat-Treated Aluminum-Lithium Alloys", Proceedings of International Conference on Advances in Production and Processing of Aluminum, APPA 2001, pp. 16.3.1-16.3.16, Feb. 2001.

Fragomeni, J.M., “The Consequence of Heat Treating on the Microstructure, Fatigue and Tensile Behavior of a Ti-6wt.%Al-4wt.%V Alloy”, 19^th ASM Heat Treating Society Conference Proceedings in the New Millenium”, Edited by Sandra J. Midea and George D. Pfaffmann, pp. 217-225, Nov. 1999.

Fragomeni, J.M., “Plastic Deformation Mechanisms and Fracture Behavior of Age Hardened Aluminum-Lithium-Zirconium Alloys”, SECTAM – XX, Proceedings of the Twenty Southeastern Conference on Theoretical and Applied Mechanics, edited by H.V. Tippur and R.K. Raju, April 2000.

Fragomeni, J.M., and Hillberry, B.M., “Controlling the Particle Size, Spacing, Distribution, Volume Fraction, and Growth Rate of Intermetallic Particles in Binary Aluminum-Lithium Alloys by Thermal Processing and Composition Control”, ”, 19^th ASM Heat Treating Society Conference Proceedings in the New Millenium”, Edited by Sandra J. Midea and George D. Pfaffmann, pp. 58-67, Nov. 1999.

Fragomeni, J.M., “The Plastic Deformation Mechanisms, Strength, and Fracture Behavior of a Precipitation Hardened Aluminum-Lithium-Zirconium Alloy”, Materials Science Forum, Vols. 331-337, part 3, Trans Tech Publications, Switzerland, pp. 1567-1580, 2000.

Fragomeni, J.M., “The Influence of Heat Treating on the Microstructure and Ductility of a Particle Strengthened Al-2.6wt.%Li-0.09wt.%Zr Alloy”, Proceedings of the 18^th ASM Heat Treating Conference, Edited by R.A. Wallis, amd H.W. Walton, ASM Heat Treating Society, pp. 419-429, 1999.

Fragomeni, J.M., and Nunes Jr., A.C., “Potential for Fabric Damage by Welding Electron Beam”, Proceedings of the 5^th International Conference on Trends in Welding Research, American Welding Society, and ASM International, Edited by J.M. Vitek et al., pp. 498-502, 1999.

Fragomeni, J.M., Hillberry, B.M., Sanders, Jr., T.H., and Gaitatzes, A.G., "Integration of Microstructural Development and Properties Design into the CAD/CAM Environment," Microstructural Development and Control in Materials Processing, edited by D.R. Durham and A. Saigal, The American Society of Mechanical Engineers, New York, MD-Vol. 14, pp. 1-9, December 1989.

Fragomeni, J.M., and Nunes Jr., A.C., “An Assessment of Molten Metal Detachment Hazards During Electron Beam Welding in Space”, Developments in Theoretical and Applied Mechanics, Volume XIX, Proceedings of the Nineteenth Southeastern Conference on Theoretical and Applied Mechanics, edited by C.T. Tsai and K.K. Stevens, pp. 461-472, 1998.

Fragomeni, J.M., Hillberry, B.M., and Sanders, Jr., T.H., "An Investigation of the d¢ Particle Strengthening Mechanisms and Microstructure for an Al-Li-Zr Alloy," Proceedings of the Fifth International Aluminum-Lithium Conference, Materials and Component Engineering Publications Ltd., Birmingham, UK, pp. 837-849, 1989.

Fragomeni, J.M., and Hillberry, B.M., "Predicting the Particle Shearing and Particle Looping Response for a Precipitation Hardened Alloy Strengthened by Ordered Precipitates," Developments in Theoretical and Applied Mechanics, Volume XVIII, Proceedings of the Eighteenth Southeastern Conference on Theoretical and Applied Mechanics, edited by H.B. Wilson et al., pp. 109-123, 1996.

Fragomeni, J.M., and Hillberry, B.M., "A Method to Predict the Precipitation Hardening Response of A Particle Strengthened Aluminum-Lithium Alloy", Recent Advances in Solids/Structures and Application of Metallic Materials, Edited by Y.W. Kwon, D.C. Davis, and H.H. Chung, The American Society of Mechanical Engineers, PVP-Vol. 342, MD-Vol. 72, pp. 185-203, 1996.

Fragomeni, J.M, and Hillberry, B.M, "Predicting the Precipitation Hardening Response of Particle Strengthened Alloys Hardened by Ordered Precipitates", Recent Advances in Solids/Structures and Application of Metallic Materials, Edited by Y.W. Kwon, D.C. Davis, H.H. Chung, and L. Librescu, The American Society of Mechanical Engineers, PVP-Vol. 369, pp. 355-382, 1997.

Fragomeni, J.M., and Hillberry, B.M., "A Model for Predicting the Precipitation Strengthening Response of Precipitation Hardened Alloys Strengthened by Ordered Precipitates", Recent Advances in Solids/Structures and Application of Metallic Materials, Edited by Y.W. Kwon, D.C. Davis, H.H. Chung, and Librescu, The American Society of Mechanical Engineers, PVP-Vol. 369, pp. 93-107, 1997.

Fragomeni, J.M., and Hillberry, B.M., “A Micromechanical Model for Determining the Strength of Precipitation Hardened Alloys”, Developments in Theoretical and Applied Mechanics, Volume XIX, Proceedings of the Nineteenth Southeastern Conference on Theoretical and Applied Mechanics, edited by C.T. Tsai and K.K. Stevens, pp. 295-326, 1998.

Sanders, Jr., T.H., Grandt, Jr., A.F., Hillberry, B.M., Fragomeni, J.M., Henkener, J.A., Kistler, G.P., McKeighan, P.C., Pegram, J.E., Sater, J.M. and Valentine, M.G., "An Extrusion Program Designed to Relate Processing Parameters to Microstructure and Properties of an Al-2.6Li-0.09Zr Alloy," Proceedings of the Fifth International Aluminum-Lithium Conference, Materials and Component Engineering Publications Ltd., Birmingham, UK, pp. 273-286, 1989.

Fragomeni, J.M., “An Organizational Design of Experiments Statistical Approach to Investigate the Effect of Extrusion Process Manufacturing on the Mechanical Behavior of an Aluminum Alloy”, IEMC’98 Proceedings, Pioneering New Technologies: Management Issues and Challenges in the Third Millennium,

Edited by Lois S. Peters, Institute of Electrical and Electronic Engineers, Inc. pp. 11-14, 1998.

Fragomeni, J.M., “Mechanical Strength Modeling of High Temperature SiC Discontinuosly Reinforced Aluminum Alloys”, ICCE/6 proceedings of the Sixth International Conference on Composite Engineering, Edited by D. Hui, International Community for Composite Engineering, pp. 229-230, 1999.

Fragomeni, J.M., “Influence of Extrusion Processing Variables on the Microstructure and Mechanical Properties of Aluminum-Lithium Alloy Extrusions”, proceedings of the 5^th International Conference on Advanced Manufacturing Systems and Technologies, Edited by Elso Kulijanic, pp. 329-335, 1999.

Fragomeni, J.M., “The Effect of Annealing, Overheating, and Sintered Porous Coating Thermal Treatments on the Fatigue Properties of Ti-6.0wt.%Al-4.0wt.%V ELI Alloy Plate Specimens”, Recent Advances in Solids/Structures and Application of Metallic Materials, Edited by H.H. Chung and Y.W. Kwon, The American Society of Mechanical Engineers, N.Y., N.Y., PVP-Vol. 381, pp. 235-246, 1998.

Fragomeni, J.M., “A Micro-Mechanics Approach for Estimating the Yield Strength and Ultimate Tensile Strength Responses with Heat Treatment of an Aluminum Alloy Strengthened by the Intermetallic Compound d¢-Al₃Li”, Applied Mechanics in the Americas, Proceedings of the Sixth Pan American Congress of Applied Mechanic (PACAM IV) , Vol. 7, pp. 851-855, 1999.

Fragomeni, J.M., “Mechanical Strength Modeling of Particle Strengthened Nickel-Aluminum Nickel-Aluminum Alloys Strengthened by Intermetallic Ni₃Al Precipitates”, Recent Advances in Solids and Structures, Edited by Y.W. Kwon and H.H. Chung, The American Society of Mechanical Engineers, N.Y., N.Y., PVP-Vol. 398, pp. 179-194, 1999.

Fragomeni, J.M., “Statistical Approach to Experimental Design to Determine the Effect of Extrusion Variables on the Mechanical Properties of an Al-Li Alloy”, IPMM’99, Proceedings of The Second International Conference on Intelligent Processing and Manufacturing of Materials”, Edited by J.A. Meech, M.M. Veiga, M.H. Smith, and S.R. LeClair, Vol. 1, pp. 585-591, 1999.

Fragomeni, J.M., “R.R. Moore Fatigue Testing Machine Evaluation of the Mechanical Behavior and Fatigue Properties of Heat Treated Ti-6wt.%Al-4wt.%V ELI Biomedical Alloy Substrates”, proceedings of the Tenth World Congress on the Theory of Machines and Mechanisms, Vol. 5, pp. 1915-1920, 1999.

Fragomeni, J.M., “An Iterative Approach to Determine Composition and Heat Treatment from the Mechanical Yield Strength of an Aluminum-Lithium Alloy”, IPMM’99, Proceedings of The Second International Conference on Intelligent Processing and Manufacturing of Materials”, Edited by J.A. Meech, M.M. Veiga, M.H. Smith, and S.R. LeClair, Vol. 1, pp. 577-583, 1999.

Fragomeni, J.M., “Mathematical and Computer Modeling of the Crystalline Plastic Deformation and Strengthening Mechanisms in Advanced Aluminum Alloy Systems”, Twelfth International Conference on Mathematical and Computer Modelling and Scientific Computing, Book of Abstracts, p. 54, 1999.

Fragomeni, J.M., “A Method for Predicting the Crystallographic Texture from the Polycrystalline Mechanical Strength as a Function of Heat Treatment for a Precipitation Hardened Aluminum Alloy”, Proceedings of the Twelfth International Conference on Textures of Materials, edited by Jerzy A. Szpunar, Vol. 2, pp. 901-909, 1999.

Fragomeni, J.M., “The Deformation Mechanisms, Microstructure, and Fracture Behavior from Precipitation Aging of an Aluminum Containing Lithium Alloy”, extended abstract, Mechanics & Materials in Design 3 Conference, Edited by S.A. Meguid, pp. 185-187, May 2000.

TECHNICAL REPORTS:

Fragomeni, J.M., and El-Rahaiby, S.K., "Review of Ceramic Joining Technology," CIAC Report 9, Contract No. DLA 900-90-0304, DoD Ceramic Information Analysis Center of the Center for Information and Numerical Data Analysis and Synthesis of Purdue University, 2595 Yeager Road, West Lafayette, Indiana 47906-1398. Report prepared for the Naval Air Warfare Center (Aircraft Division), Patuxent River, MD 20670-5304, pp. 1-55, November 1995.

Fragomeni, J.M., "Carbon Nitride Versus Diamond: Which is Harder?," Ceramics Information Analysis Center (CIAC) Newsletter, DoD Center for Information and Numerical Data Analysis and Synthesis (CINDAS) of Purdue University, Vol. 5, No. 3, p. 10, June 1995.

J.M. Fragomeni, “Mechanical Strength Modeling of Particle Strengthened Nickel-Aluminum Alloys Strengthened by Intermetallic g’(Ni₃Al) Precipitates”, AFOSR Summer Faculty Research Report, pp. 1-20, August 1998.

A.C. Nunes, Jr., C.K. Russell, F.R. Zimmerman, and J.M. Fragomeni, “Low Pressure Gas Effects on the Potency of an Electron Beam Against Ceramic Cloth”, NASA 209762 Technical Memorandum TM-1999-209762, November 1999.

Fragomeni, J.M., “Potential for EMU Fabric Damage by Electron Beam and Molten Metal During Space Welding for the International Space Welding Experiment”, NASA/ASEE Summer Faculty Fellowship Program Report, NASA Marshall Space Flight Center, Alabama, August 1997.

Fragomeni, J.M., “An Assessment of Molten Metal Detachment Hazard for Electron Beam Welding in the Space Shuttle Bay at Low Earth Orbit for the International Space Welding Experiment”, NASA/ASEE Summer Faculty Fellowship Program Report, NASA Marshall Space Flight Center, Alabama, August 1996.

A.C. Nunes, Jr., J.M. Fragomeni, C. Russell, and B. Bhat, “An Assessment of Molten Metal Detachment Hazards for Electron Beam Welding in the Space Environment: Analysis and Test Results”, NASA Technical Memorandum TM-1998-207979, May 1998.

TECHNICAL PRESENTATIONS (selected)

TMS Annual Meeting, New Orleans, LA Feb. 2001

"Effect of Single and Duplex Aging on Microstructure and Fatigue Crack Growth in Al-Li-Cu

Alloy AF/C458

The Materials Solution Conference 20^th ASM Heat Treating Society, St. Louis, MO Oct. 2000

"The Effect of Heat Treating on the Precipitation Response and Microstructure of an Aluminum-Lithium-Zirconium Alloy",

THERMEC Conference on Processing & Manufacturing of Advanced Materials, Las Vegas, NV Dec. 2000

"Effect of Extrusion Processing Deformation and Heat Treating on the Mechanical Behavior,

Microstructure, Anisotropy, and Plastic Flow of Aluminum-Lithium Alloys"

ASME Winter Annual Meeting, Orlando, Florida Nov. 2000

"The Effect of Aging on the Microstructure and Precipitation Response of an Aluminum-Lithium Alloy"

The ASM Materials Solution Conference, St. Louis, MO Oct. 2000

"Microstructure Response from Heat Treating and Deformation, and the Mechanical Behavior of

a Ti-6wt.%Al-4wt.%V Alloy"

12^th International Conference on Mathematical and Computer Modelling, Chicago, Illinois Aug. 1999

“Mathematical and Computer Modeling of the Crystalline Plastic Deformation and Strengthening Mechanisms in Advanced Aluminum Alloy Systems”

TMS Annual Meeting, San Diego, California March 1999

“Determining the Effect of Microstructure and Heat Treatment on the Mechanical Strengthening Behavior of an Aluminum Alloy Containing Lithium Precipitation Hardened With the Al₃Li Intermetallic Phase”

The 32^nd Annual Convention of the International Metallographic Society, Cincinnati, Ohio Nov. 1999

“Controlling the Particle Size, Spacing, Distribution, Volume Fraction, and Growth Rate of Intermetallic Strengthening Particles in Aluminum-Lithium Alloys by Thermal Processing and Composition Control”

18^th ASM Heat Treating Society Materials Solution Conference, Chicago, Illinois Nov. 1998

“The Influence of Heat Treating on the Microstructure and Ductility of a Particle Strengthened

Al-2.6wt.%Li-0.09wt.%Zr Alloy”

ASME Winter Annual Meeting, Dallas, Texas Nov. 1997

"Predicting the Precipitation Hardening Response of Particle Strengthened Alloys Hardened by

Ordered Precipitates"

ASME Winter Annual Meeting, Dallas, Texas Nov. 1997

"A Model for Predicting the Precipitation Strengthening Response of Precipitation Hardened

Alloys Strengthened by Ordered Precipitates"

NASA/ASEE Faculty Fellowship Seminar, Marshall Space Flight Center, Huntsville, AL Aug. 1997

"Potential for EMU Fabric Damage by Electron Beam and Molten Metal During Space Welding"

18th Southeastern Conference on Theoretical and Applied Mechanics, Tuscaloosa, Alabama April 1996

"Predicting the Particle Shearing and Particle Looping Response for a Precipitation Hardened

Alloy Strengthened by Ordered Precipitates"

The University of Alabama Aerospace Engineering & Mechanics Seminar, Tuscaloosa, AL, March 1997

"A Method to Predict the Precipitation Strengthening Response of Particle Strengthened Alloys

Hardened by Ordered Precipitates"

20th Annual Conference of Composites, Materials, and Structures, Cocoa Beach, Florida Jan. 1996

"Review of Ceramic Joining Technology"

ASME Winter Annual Meeting, Atlanta, Georgia Nov. 1996

"A Method to Predict the Precipitation Hardening Response of a Particle Strengthened Al-Li Alloy"

NASA/ASEE Faculty Fellowship Seminar, Marshall Space Flight Center, Huntsville, AL Aug. 1996

“An Assessment of Molten Metal Detachment Hazards During Electron Beam Welding in the Space Shuttle Bay at LEO for the International Space Welding Experiment"

Purdue University Mechanical Engineering Design Seminar, West Lafayette, Indiana Sept. 1994

"A Method for Predicting the Precipitation Hardening Response of Particle Strengthened Alloys"

ASME Winter Annual Meeting, San Francisco, California Dec. 1989

"Integration of Microstructural Development and Properties Design into the CAD/CAM Environment"

Purdue University Mechanical Engineering Design Seminar, West Lafayette, Indiana Nov. 1989

"Modeling the Tensile Strength of a Precipitation Hardened Aluminum-Lithium Alloy"

The Fifth International Aluminum-Lithium Conference, Williamsburg, Virginia March 1989

"An Investigation of the d’ Particle Strengthening Mechanisms and

Microstructure for an Al-2.6wt.%Li-0.09wt.%Zr Alloy"

Past Awards, Honors, Certificates, etc.

University of Pittsburgh Merit Scholarship (1981-85)

Carpenter Technology Corporation Scholarship (1982)

Univ. of Pitt. School of Engineering Honor list and Dean's Honor List (4 terms)

Phi Eta Sigma National Honor Society (1981-85)

Tau Beta Pi National Engineering Honor Society: Elected to the Advisory Board as

Inter-Honorary Council Representative. (1983-85)

Omicron Delta Kappa Leadership Honor Society (1985)

Engineer-in-Training (EIT) certificate - State of Indiana (1992)

Order of Engineer (1989)

Open Water Scuba Diver Certification (1997)

Sigma Xi, The Scientific Research Society, (1996-00)

Pi Tau Sigma Mechanical Engineering Honor Society, Ohio University (1998-00)

Past and Current Technical Societies Affiliations, Organizations, and Activities

American Society for Engineering Education, ASEE (1993-01)

Society for the Advancement of Material and Process Engineering, SAMPE (1992-01)

American Society for Metals, ASM (1982-01)

American Institute of Mining, Metallurgical, and Petroleum Engineers, AIME (1982-01)

The American Society of Mechanical Engineers, ASME (1989-01)

The Minerals, Metals, and Materials Society, TMS (1999-01)

Ohio University Society for the Advancement of Material & Process Engineering, SAMPE (1999)

Ohio University SAMPE student chapter faculty advisor (1999)

The University of Alabama Society of Women Engineers, SWE (1996-97)

University of Pittsburgh Foundry Casting Club (1984-85)

American Society for Quality Control, ASQC (1986)

Private pilot license training (1986-88)

Purdue Student Government, PSG (1992)

Pi Tau Sigma, Ohio University (1998-00)

The American Welding Society, AWS (1998-01)

The American Institute of Aeronautics and Astronautics, AIAA (1996-01)

Univ. of Pittsburgh Foundry Educational Foundation (1984-85)

Pennsylvania Society of Professional Engineers, PSPE (1985-87)

Purdue University Habitat for Humanity (1992-93)

Northwest Indiana Knights of Columbus (1985-87)

Purdue Society of Professional Engineers, office assistant (1991-92)

National Society of Professional Engineers, NSPE (1985-96)

Indiana Society of Professional Engineers, ISPE (1992-96)

Purdue Society for the Advancement of Material and Process Engineering, SAMPE, mechanical engineering class representative for SAMPE (1992-93)

Purdue University SAMPE Graduate Vice President (1993-94)

Purdue University Rugby Football Club (1987)

Purdue Outing Exploration Club (1987-88)

Advanced Formal University Engineering Courses Completed

Advanced Fracture Mechanics Finite Element Analysis Mechanical Vibrations Theory of Elasticity Advanced Dynamics Linear Analysis Advanced Calculus Statistical Methods Design of Experiments Physical Metallurgy Mechanical Metallurgy Intermediate Heat transfer Thermodynamics

Numerical Methods in Engineering Advanced Topics in Composite Materials Dynamical Problems in Design Ceramic Engineering Boundary Value Problems Applied Regression Analysis Mechanical Behavior of Materials Micromechanisms in Particle Strengthened Alloys Advanced Mathematics for Engineers and Physicists Deformation Mechanisms in Crystalline Solids Fatigue and Fracture in Aerospace Materials High Temperature Alloys Transport Phenomena

webpages:

es.udmercy.edu/~materiallab

www.ent.ohiou.edu/~giridhar/thesis.html

Research Interests:

Microstructure- Material Property- Processing - Chemistry - Material Science - Relationships;

This research involves microstructure mechanical property correlation and modeling. The effect of material processing and chemistry/composition on mechanical behavior can be optimized by controlling microstructure. This research involves multilevel or multuscale modeling of a material for the microstructure, macrostructure or grain structure, and crystallographic texture to predict the specific mechanical properties and phenomena such as deformation, strength, ductility, fatigue, fracture toughness. The research would in general involves understanding, defining, and/or determining the relationship between specific material properties to the materials microstructure, the manufacturing and material processing, and the composition. The material processing, for example, includes the solution heat treatment, the aging practice (temp. and time), etc. The manufacturing includes the deformation processing parameters such as the strain rate of deformation, temperature, grain flow, flow stress, type of processing, geometry of the processing, etc. The material behavior during deformation processing is important to include because of the effects on the microstructure. Also, determining the effects of composition variation on the microstructure would be an important consideration in specifying a material property. The alloying could have a strong effect on the crystal structure, microstructure, and phase stability. Developing models and methods to predict the fatigue life, fracture toughness, ductility, and strength is part of the goal of the ongoing research. The properties of a material can be controlled through controlling the internal structure of the material. In order to understand the internal-structure properties relationship of certain materials or alloy systems, both a macroscopic and a microscopic analysis is required. The macrostructure includes parameters such as the grain size, grain size distribution, grain morphology, grain orientation or texture, the fracture mechanisms, grain boundary precipitates, dislocation grain boundary interaction, etc. Some of the microstructure parameters include the particle size, interparticle spacing, the size distribution, the particle morphology, the different chemistries of precipitates in a distribution, grain-boundary precipitates, equilibrium versus nonequilibrium particles, the dislocation-particle interaction mechanisms, shearable versus nonshearable precipitates, etc. An understanding of both the macrostructure and the microstructure is necessary for determining the mechanical behavior of a given material system. A solid mechanics approach from both a microstructural and macrostructural level is required to predict certain materials behavior such as fatigue, fracture, ductility, strength; both the microscopic and the macroscopic deformation mechanisms simultaneously effect the properties. Thus a materials performance can be determined from the given materials design parameters through an understanding of the internal properties structure relationship. This research is applicable to metals and alloys, composites, ceramics, biomaterials, superalloys, polymers, nonmetallic materials, organic materials, etc. Some specific alloys of interest include some aluminum alloys such as alloys Al-Sc-Ti, 2090, 2091, 8090, 8091, 6061, 7075, etc. Other materials of interest for research activities in relating the mechanical behavior to the internal structure include superalloys, aerospace structural alloys, ceramic-matrix composites, automotive alloys and materials, metal-matrix composites, and bioengineering alloys. The current research focus is on microstructure and mechanical properties correlation’s of the more recently developed Al-Li-Cu-Mg-Zr aerospace alloy AF/C-458. The objective of this research activity is to develop optimal thermo-mechanical processing schedules to achieve improved levels of mechanical properties performances for current needs of the aerospace industry. To achieve this, the microstructure is characterized by quantitative microscopy methods, and correlated to the mechanical properties to develop predictive models of microstructure. Thus, the motivation for the research will also be to optimize the microstructure and mechanical behavior of this new lightweight aluminum alloys for primary aerospace systems where isotropic mechanical properties and good ductility, mechanical strength, and fracture toughness are essential.

Teaching Interests, Philosophy, and Goals

Teaching Philosophy:

The engineering teacher must for any given class must challenge and motivate the students to be creative, resourceful, and ingenious in learning how to solve engineering, math, and science related problems. The instructor should provide lectures that challenge and stimulate the students thinking about engineering problem solving, science, solution approaches, and related theory. I strive to motivate the students through class lectures to think independently about solutions approaches to engineering problems and to utilize their background, knowledge, and skills to creatively solve engineering problems. I encourage the students to relate what they are learning in their class studies to real life engineering challenges and needs by directing them to bridge the gap between the theoretical and experimental. I provide open communication with the students as a priority to provide an environment that would maximize the learning of a particular area of engineering or science. I compliment the lecture material with examples from research and industry. This gives the students a better appreciation and understanding of the topic of study.

An important aspect of teaching engineering is that the students must learn how to solve difficult and challenging engineering problems both independently as well as in a group. The students must be able to analyze and develop solutions, approaches, and methods to complex systems. The students must learn to be resourceful in their various efforts to attain a precise solution to an engineering problem. The instructor of a class must provide the students with challenging and interesting engineering problems to solve. The engineering activities within the classroom should challenge and stimulate the engineering students to think in a creative, intuitive, systematic and scientific manner. The students must learn to understand the basic assumptions and derivations of the theories they apply, and how to apply those theories to real life engineering situations.

The students must also develop very good technical writing skills to adequately and accurately provide a communication for the engineering solution. This is a very important part of engineering that the results of one work be concisely and formally written in a complete manner to express that which must be presented. The students must also be at times capable of providing good oral presentations of their work. All of these activities take practice to improve and become successful. I strive to include all of these aspects of communication into the engineering courses through technical report writing, presentations, and group work projects.

The instructor must also keep his understanding of engineering and science current through involvement with industry and research labs, attending workshops, conferences, and seminars, and research activities related to the classes being taught. As an instruction I integrate that which I have learned through my research and industry activities into the classroom lectures and course activities to give the students up to date current and new technology of engineering progress relevant to the goals and objectives of the particular classes I teach.

Finally the engineering instructor must be able to relate personally with the students both in and outside the class in order for the students to feel free to have communication with the instructor. The instructor should be involved with engineering student functions, extra-curricular activities, and recruiting activities. The instructor should communicate with and mentor the students through office hours, emails, phone conversation, after class discussion, and laboratory instruction. There are various engineering student groups that students should be encouraged to participate such as the American Society of Mechanical Engineers (ASME), Phi Tau Sigma, American Society for Materials (ASM), etc. These group help the students become involved and meet their instructors and other students.

Teaching Interests for Undergraduate Courses:

Some of the engineering courses that I am interested in to instruct include statics, dynamics, metal processing, strength of materials, manufacturing science, mechanical behavior of materials, engineering material science, heat and mass transfer, numerical methods, engineering economics, physical metallurgy, process metallurgy, finite element analysis, material processing, chemistry, and engineering mathematics.

Teaching interests for Advanced Level Courses:

The courses that I am most qualified to instruct include the following areas: mechanical behavior of materials, fracture mechanics and fatigue, solid mechanics and materials, material science and engineering, dynamics, metallurgical engineering, and applied mathematics.

Mechanical Behavior of Materials - Areas of interest include advanced stress analysis, mechanical properties and microstructure, fatigue behavior of metals and alloys, dislocation interactions in material and effect on properties, and mechanical metallurgy. In addition, I would be interested in developing courses relating

the mechanical behavior of materials to the microstructure and processing of materials.

Solid Mechanics and Materials - Areas of interest include structure and properties of engineering materials,

statics and dynamics, fatigue and deformation, strength of materials, elasticity, and plasticity.

Material Science and Engineering - Topics of interest include high temperature alloys, composites, ceramics, polymers, metal-matrix composites, particle strengthened alloys, advanced aluminum alloys, steel alloys, nickel-aluminum alloys, micromechanisms in particle strengthened alloys, corrosion engineering, deformation mechanisms in crystalline solids, and the influence of microstructure on the mechanical and material properties.

Advanced Engineering Mathematics - Areas of interest would include advanced calculus, linear analysis, complex algebra, Fourier series, partial differential equations, ordinary differential equations, boundary value problems, Laplace transform, finite difference method, design of experiments, statistical regression analysis, and numerical methods.

Metallurgical and Chemical Engineering - Areas of interest include physical metallurgy, process metallurgy, heat and mass transport phenomena, metallurgical thermodynamics, physics of solids, crystallography and x-ray diffraction, welding metallurgy, foundry metallurgy, heat treating of alloys, phase diagrams in metallurgy, and quantitative microscopy analysis.

Manufacturing Science and Metal Processing – The effect of manufacturing and metal processing parameters on microstructure and mechanical properties. Metal flow during deformation. Plastic deformation mechanisms. Anisotropy and crystallographic texture effect. Areas of interest include casting, forging, extrusion, rolling, sheet metal forming, welding.