AREA OF EXPERTISE
METALLURGY & MATERIALS SCIENCE / MATERIALS SCIENCE & ENGINEERING
Expert CV Stephen Wortman (condensed)

EXPERTISE
Mechanical Engineering; Materials Engineering; Metals; Plastics; Glasses; Composites; Non Destructive Testing; Failure Analysis; Fracture Analysis; Metals, Plastics, Glass, and Composites Processing and Manufacture; Thin Films; Mechanical Parts Failure; Exercise Equipment Failure; Aircraft Accident Investigation; Windshield Failures; Ladders; Finite Element Analysis; Slips and Falls; Orthopedic Implants; Playground accidents and certifications.

EDUCATION
1971 B.S. Washington University, St. Louis, Missouri
1985 M.S. University of California, Davis, California
2001 National Playground Safety Institute Certified Playground Safety Inspector

EXPERIENCE
1985-Present Consulting Engineer
Expert witness and testimony in areas of failure analysis, fatigue analysis, corrosion, processing and design of plastic, glass, metal, ceramic, and composite parts and structures; safety. Recent cases have involved: Candle explosion failure analysis; Garage door failures; Swing-seat failure; Paint spray gun defect; Wiring harness fire evaluation; Milk evaporator/dryer sighting glass failure; Sliding glass door accidents; Auto hoist failure; Truck lift failure and analysis; Ice/rock salt effectiveness in slip and fall; Evaporative condenser tube failure analysis; Low light level trip and falls; Stairway slip and falls; Grease spill slip and falls; Scaffolding failures; Ladder failures; Plastic molded chair failures and design analyses; Aluminum and plastic lawn chair failures; Office and ergonomic chair failures; Motorcycle tire valve failure analysis; Beer and wine bottle failure analyses; Go-cart evaluations; Plastic housing design, failure and processing analysis; Glass coffee pot (French press) failure and design analysis; Electrical appliance failure and design analysis; Wood molder safety design evaluation; Exercise equipment failure analysis and design review; Metal lathe safety guarding evaluation, Faulty fireplace-insert manufacturing defect; Nitrogen heat exchanger operational evaluation; Composite bicycle wheel failure analysis, design and manufacturing evaluation; Motor home door lock failure; Plastic water filter failure/fracture analyses; Glass security film failure; Auto windshield impact failure analysis; Plastic water cooler jug processing and failure analysis; Lawn mower safety and failure analysis; Composite sailplane damage assessment.

1990-1999 USAF Advanced Composites Program Offices - Chief Transparency Engineer
Providing design testing, stress analysis, accident investigation, failure analysis, technology insertion, and technical expertise to all logistics program managers in the area of aircraft windshields and canopies, sensor windows, advanced transparency coatings and composites.

1985-1990 Failure Analysis Unit, Physical Sciences Branch, McClellan AFB - Failure Analysis Engineer.
Provided aircraft system program managers failure analyses and solutions to major operational problems encountered in mechanical and structural systems and components. Performed analyses on a myriad of failed mechanical parts, motors, metal flight structures, switches, cables, mechanical drives, fasteners, glass, and plastic parts. Evaluated materials (plastic, glass, and metal) used in the manufacture of aircraft parts for proper physical and mechanical properties using material and metallurgical destructive and nondestructive inspection techniques. Developed, tested, and implemented new transparency designs for operational jet aircraft.

1985-Present Department of Mechanical Engineering, University of California - Davis, - Visiting Lecturer.
Teaches lower and upper division and graduate level courses in Introduction to Material Science and Engineering, Failure and Fracture Analysis, Materials in Engineering Design, Manufacturing Process Design, Nondestructive Testing, Rate Processes, Bio-Materials, and Professional Engineering Ethics.

1980-1985 Department of Orthopedic Surgery, University of California - Davis Medical School - Research Engineer Assistant. Providing failure analysis on failed orthopedic implants, medical instrument design, stress analysis, and testing for joint research, and bio-material corrosion analysis.

AREA OF EXPERTISE
METALLURGY & MATERIALS SCIENCE / MATERIALS SCIENCE & ENGINEERING

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