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 Expert  721754

Expert in Mechanical Properties of Metals

Available for your Consulting and Expert Witness Needs

Ohio (OH)
Education Work History Career AccomplishmentsPublicationsConsulting Services Expert Witness

Summary of Expertise: Listed with other top experts in: 
Expert has studied aluminum alloys from the 2xxx, 5xxx, 6xxx and 7xxx series and studied their grain size, tensile properties, heat treatments, corrosion resistance, and fatigue behavior (both room temperature stress - life (S-N) and crack growth behavior). His work is also in the area of selecting new aluminum alloy materials for applications in aircraft.

aluminum material selection

Expert has an extensive background in high temperature materials used in aircraft engines and that used in power plants. He maintains a large data base on these and other materials on the creep-fatigue behavior of materials. Other materials he studied are used in solder joints, aircraft, automobiles, and manufacturing engineering applications.

materials selection

Expert has been studying metal corrosion issues on aircraft materials and components for the last 11 years. He was a principal investigator on the corrosion evaluation and mechanical properties determination of exposed C/KC 135 tanker aircraft skin materials. Materials he studied are aluminum alloys, steel alloys and titanium alloys.

metal corrosion

Expert has been studying the creep and creep fatigue damage mechanisms in materials that were used in such applications as gas turbines, power equipment and other applications. He also studied the creep damage mechanisms under the laboratory test conditions known as low cycle fatigue and creep-fatigue interactions. Some materials studied were SS316, Ti-6Al-4V, MarM002, 1Cr-Mo-V and other superalloy blade and vane materials.

metal creep

Expert has been working with the metal materials used in a range of applications such as for making valves, chemical running plant equipment, gas turbine components, and aircraft components. He has industrial experience to foresee the application requirements to suggest a material for a particular application.

metal material selection

Most of the work Expert has been doing over the last 15 years is to understand the mechanical behavior of materials. The mechanical behavior include such terms as tensile, fatigue, creep, corrosion, and wear behaviors in order to model the damage growth mechanisms and failure by one of these modes. The materials range from solder alloys, aluminum alloys, titanium alloys, superalloys, steel alloys and other alloys.

metal mechanical behavior

In order to generate a material behavior Expert has been very active in conducting mechanical tests. He has performed tensile, hardness, wear, fatigue, creep, corrosion, wear tests and other tests on the full-scale components to determine the material behavior and predict the component life.

metal testing

Expert's recent work at Cessna Aircraft Company involved conducting failure analysis of aircraft components failed in service or on the test articles while conducting tests. Since the aircraft components are made of a range of materials he has conducted failure analysis on a range of materials being non-ferrous and ferrous metal. His other failure analysis work involve failure analysis if pipes, pipe fittings used in power plants and some gas turbine engine components.

nonferrous metal failure analysis

Expert has written extensively on the physics of pitting and how pitting interacts with fatigue. He has developed models to predict the pit growth rates in aluminum alloys and presented models to capture the phase in which a pit changes to a crack. The damage growth rates increase when a crack grows in a corrosion environment.


Show Secondary and Basic Areas of Expertise
Expert may consult nationally and internationally, and is also local to the following cities: Columbus, Ohio;  Toledo, Ohio;  Dayton, Ohio;  Lorain, Ohio;  Springfield, Ohio;  Elyria, Ohio;  Middletown, Ohio;  Fort Wayne, Indiana;  and Muncie, Indiana.

Often requested
with this expert:

Aluminum Alloys
Materials Processing and Manufacturing
Carbon Fibers, Composites, Pitches, CVD, Graphite
corrosion in plant,buildings, hvac, etc; Hi-Temp; surveys/...

Year   Degree   Subject   Institution  
1999   Doctor of Science   Mechanical (Materials) Engineering   Helsinki University of Technology  
1986   Master of Engineering   Mechanical (Welding) Engineering   University of Roorkee, India  

Work History:
Years   Employer   Department   Title   Responsibilities

2000 to


(Undisclosed University)



Mechanical Engineering


He is a coordinator of the Industry - University cooperation initiative with local area manufacturers, processors and utility companies. This initiative allows him to serve the local industry in fighting fires on a short term basis solving problems in manufacturing, failure analysis, material testing and other areas. He also teaches such courses as Mechanics of Materials and Machine Design to Engineering students.

1996 to 2000


Cessna Aircraft Company


Materials and Processes




First two years as Engineer he performed durability and damage tolerance analyses of aircraft components. Used software package such as CRACKS 95 and others and determined crack growth as a function of flight hours. Maintained and updated the database for CRACKS program. The other two years were devoted to the material testing, reducing the data, failure analysis, specification development and/or revisions, manufacturing issues and other fire fighting issues.

1992 to 1996


University of Utah



Mechanical Engineering


Developed funded research work in the corrosion prevention and life extension issues of aircraft fleet. Low cycle fatigue and creep-fatigue interaction studies of steel and superalloys. General fatigue studies and material selection and testing.

1989 to 1992


University of Wollongong, Australia and Open University, England


Materials Engineering


Research Assistant


Performed research in the area of creep-fatigue interactions and life prediction of low alloy steels.

1986 to 1989


Gas Turbine Research Establishment


Materials and Structures


Research Scientist


Materials Testing Laboratory. Involved in the testing of new materials for gas turbine engine development program, performed full scale fatigue tests to assess the life.

1983 to 1984


Orient Paper Mills Ltd



Chemical Recovery Plant


In-plant maintenance of chemical running plant such as pumps, pipe-lines, evaporators, etc.

Career Accomplishments:


Professional Appointments

Associate Editor of High Temperature Materials and Processes an International Journal

Publications and Patents Summary

He has over 75 publications in various journals, and conferences.

Additionally, he has authered over 75 reports while at Cessna Aircraft Company.

Selected Publications and Publishers  
 - Materials and Design, Elsevier Science  
 - International Journal of Fatigue, Elsevier Science  
 - International Symposium for Materials Ageing and Life Management  
 - Materials and Design, Elsevier Science  

Government Experience:
Years   Agency   Role   Description
1994 to 1995   Air Force Office of Scientific Research   Co-Principal Investigator   Conducting contract reserarch on the effect of fretting corrosion and pitting corrosion on the structural integrity of aircraft structure.

Consulting Services:
Selected Consulting Examples:
  • Participated in a round-robin test effort from the Air Force/Boeing Contract on the corrosion prevention and life assessment of C/KC 135 fleet.
  • Coordinated material testing efforts for Cessna new material characterization and data reduction for the new aircraft programs.
  • Performed failure analysis of test article components and aircraft components from service for failure mode and cause investigation.
  • Updated the data-base and material parameters in the damage tolerance software package, CRACKS-95.
  • Served as a consultant to various corporations such as FASIDE International, ARINC Research Corporation, Boeing Defense and Space Group, etc.
Click the green button above to contact Expert for a free initial screening call regarding your expert consulting needs.  Expert is available for consulting to corporate, legal and government clients.  Remember, your initial screening call to speak with Expert is free.

Expert Witness:
Recent Litigation Client Requests:
  • Expert in aerospace applications for consulting on hermetic dissimilar metal electrical connectors.
Click the green button above to contact Expert for a free initial screening call regarding expert testimony, litigation consulting and support, forensic services, or any related expert witness services.  A few litigation needs include product liability, personal injury, economic loss, intellectual property (patent, trademark, trade secret, copyright), and insurance matters.  Remember, your initial screening call to speak with Expert is free.

International Experience:
Years   Country / Region   Summary
1986 to 1989   India   Research on the material testing, full scale component testing, thermal shock, bird ingestion, spin pit tests and life assessment of turbine materials and components.
1989 to 1991   Australia   Performed research on the grain size and defect documentation of thick rolled plates. Performed failure analysis of power plant pipe-lines. Conducted resarch in the low cycle fatigue and creep-fatigue life prediction.
1991 to 1992   England   Performed research on the development and assessment of creep-fatigue life prediction models. Interacted with R&D Labs.
1999 to 2000   Finland   Performed research on the high temperature fatigue. Interacted with Industry
1992 to 2000   Japan and Holland   Visited IHI Research Institute in Tokyo and presented seminars (1992). Visited Nattional Research Laboratory in Amsterdam and conducted research on the durability of bondcoat systems.

Language Skills:
Foreign Language  

Additional Skills and Services:

Failure analysis of metals and non-metal components. Light weight materials. Life assessment methods Metal joining

Supplier and Vendor Location and Selection

Expert has experience selecting vendors for material testing, specific welding processes, and coating.


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