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 Expert  713533

Expert in Metallurgical Engineering

Available for your Consulting and Expert Witness Needs

Minnesota (MN)
Education Work History Career AccomplishmentsPublicationsConsulting Services Expert Witness

Summary of Expertise: Listed with other top experts in: 
Expert has expertise in the selection and application of materials, including metals and ceramics. He has been responsible for material selections for aircraft jet engines, industrial gas turbines, steam turbines, and generator components for 35 years. This includes the statistical analyses of material properties to create design properties. He is also experienced in developing and evaluating the repair of turbine components.

Les is extremely knowledgeable of material standards and codes such as ASTM, ANSI, DOD, and international standards. He has been responsible for the conversion of international standards, such as DIN to U.S. substitutes. He is also very experienced in the preparation and interpretation of material, processes, and product specifications. Les has extensive experience in the failure analysis of a wide variety of components, particularly high-temperature components such as gas turbine, steam turbine, and other power plant components. In addition to determining failure modes and root causes for failures, he is experienced in corrective actions to prevent failures. He also provides expert witness services in the area of failure analysis, and determining failure modes and root causes.


ceramic material selection


materials selection


metal material selection




metallurgical engineering




steam turbine




turbine generator


turbine repair




international standard


materials standard


failure analysis


forensic materials failure analysis


in-service materials failure analysis


materials failure analysis


metal failure


metal failure analysis


steel failure


steel failure analysis

Show Secondary and Basic Areas of Expertise
Expert may consult nationally and internationally, and is also local to the following cities: Minneapolis, Minnesota;  Saint Paul, Minnesota;  Burnsville, Minnesota;  Saint Cloud, Minnesota;  Eden Prairie, Minnesota;  and Minnetonka, Minnesota.

Often requested
with this expert:

Steel and Iron Casting Processes, Foundry Consulting,...
Refractories and Ceramics: Raw Materials, Manufacturing and...
Manufacturing and Quality of Casting Methods, Problem...

Year   Degree   Subject   Institution  
1969   MS   Metallurgical Engineering   University of Cincinnati  
1963   BS   Metallurgical Engineering   University of Cincinnati  

Work History:
Years   Employer   Department   Title   Responsibilities

1983 to





Metallurgical Engineer and Owner


He provides consulting and expert witness services to manufacturing, insurance, and legal clients. He is responsible for complete materials consulting services, testing services, and failure analysis. He is also responsible for the operation of a materials laboratory.

1974 to 1983


Brown Boveri Turbomachinery (Turbodyne Corp. )



Chief Metallurgist/Manager, Engineer


He was responsible for all materials and processing issues for land based gas turbines, steam turbines, and generators. He was responsible for the conversion of German drawings and specifications to American equivalents. He was also responsible for the operation of a materials testing laboratory.

1963 to 1974


General Electric Co.


Aircraft Engine Group, and Space Power and Propulsion Div.


Metallurgical Engineer, Nuclear Systems Programs and Aircraft Engine Group


He was responsible for materials support and failure analysis of assigned jet engine components. He was also involved with specification preparation and material properties design data analysis. He also conducted NASA R&D on refractory metals, and liquid metal corrosion.

Career Accomplishments:

Les is a member of ASM International, the Metallurgical Society of AIME, the American Welding Society (AWS), the American Society of Nondestructive Testing, the American Society for Quality Control, the National Association of Corrosion Engineers, ASTM, and SAE.


He is a P.E. in Minnesota and Ohio.

Professional Appointments

He was the Chairman of the Minnesota Chapter of ASM International for 1989-90, and was the Chairman of the Northwest section of AWS for 1990-91.

Selected Publications and Publishers  
 - Welding Journal  
 - Weld Repair of High and Intermediate-Pressure Turbine Rotors for Life Extension  

Consulting Services:
Selected Consulting Examples:
  • He evaluated refurbishment for a gas turbine component.
  • He was involved in the evaluation of processing problems with an implanted medical device component.
  • He was involved in material selection, brazing process development and heat treating process development for an industrial tool.
  • He conducted failure analysis of an aluminum extension ladder.
  • He was involved in U.S. specification equivalents of specifications from other countries.
Recent Client Requests:
  • Steel boiler expert for consulting on cupola liner structure failures.
  • Expert in LTCC process development to assess multilayer production process and equipment.
  • Jet engine expert for consulting on Information concerning manufacturing of turbine blades.
  • Aerodynamics expert for consulting on Turbomachinery.
  • Expert in bronze foundry for consulting on sand foundry Br-Ni-Al-C958000 and STD bronze C844.
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:
Expert Witness Experience Summary:
Les has provided regular support as an expert witness on numerous occasions. This includes depositions and court appearances.
Recent Litigation Client Requests:
  • Expert in and plane blade manufacture for litigation.
  • Expert witnesses for hose accidents for consulting on expert witness for Tranfer Hose Design.
  • Expert in aluminum failure for litigation case involving aluminum step ladder rung failure which caused client injury.
  • Steam turbine expert for consulting on steam turbine performance and damage.
  • Steam turbine expert for consulting on new turbine blade damage and corrosion associated with apparent boiler feed problem.
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.

Language Skills:
Foreign Language  

Additional Skills and Services:

Les provides seminars on failure analysis, materials evaluation, and material specifications.

Supplier and Vendor Location and Selection

Les has experience locating vendors of high-temperature metallic materials and European material vendors.

He has access to printed material and personal contacts to aid in vendor location.

Other Skills and Services

Les has extensive experience with gas turbines, steam turbines, and generators.


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