Roensch & Associates
Steve Roensch  Platinum Member

Available Globally


Fox Crossing, Wisconsin,


Logo"If it bent or broke causing loss, injury or death, I can help explain the failure." ™

Steve has a robust background in engineering mechanics, physics and mathematics, and 42 years of professional experience analyzing product designs and failures. His workload is a combination of consulting on product designs and serving as an expert on injury, death, loss and patent cases. He has worked on a wide array of product designs, from utility task vehicles (UTV, SSV, SxS, ROV, ROPS) and all terrain vehicles (ATV) to farm equipment, oilfield equipment to robots, military vehicles to the International Space Station (ISS). Steve holds an M.S. in Engineering Mechanics and a B.S. in Applied Mathematics, Engineering and Physics with Honors.

Steve has served as an expert witness on 77 cases and has testified 23 times. He has taught engineering classes at the University of Wisconsin-Madison, Marquette University, IBM Research & Development, and at client locations. In addition to a very strong theoretical background, he is a hands-on engineer, and has performed maintenance and repairs on his own SUVs, boats and aircraft.

Steve can be of assistance when a product fails in a physical manner, such as bending or fracturing, and the failure results in loss, injury or death. He will analyze the product design and the manufacture of the subject part, and determine what caused the failure. Typically, the product's stress distribution is compared to overload or fatigue failure criteria. Often, industry standards or a comparison to similar designs will help pinpoint the problem.

Steve specializes in analyzing the physical stresses that arise in a product under various loading conditions, and in determining if the design is sufficient to survive such loads. He investigates product failures and accidents from a fundamental engineering perspective, often applying finite element analysis. He documents his efforts thoroughly from the start, for concise presentation to the legal team, other experts and the jury.

Complex engineering principles are explained using everyday concepts that everyone can understand. Color stress plots and animations are used whenever possible to convey complicated engineering results in an easy to understand visual format. C.V., case studies and white paper are available at

Areas of experience include:

Utility Task Vehicles UTV
Side-by-Side Vehicles SSV or SxS
All Terrain Vehicles ATV
Recreational Off-Highway Vehicles ROV
Rollover Protective Structures ROPS
Off-Highway Vehicles OHV
Off-Road Vehicles ORV
Falling Object Protective Structures FOPS

Airport Snowblowers
Agricultural Equipment
Amusement Park Equipment
Blast Walls
Cone Crushers
Consumer Products
Construction Equipment
Crash and Rescue Vehicles
Disk Drives
Drilling Rig
Earthmoving Equipment
Engine Components
Farm Equipment
Farm Machinery
Food Processing Equipment
Front-End Loaders
Hunting Ladders
Hunting Stands
Industrial Equipment
Industrial Machinery
Jaw Crushers
Ladder Stands
Man Lifts
Material Handling Equipment
Medical Devices
Medical Equipment
Military Equipment
Military Vehicles
Mining Equipment
Motor Homes
Motor Winders
Oil Field Equipment
Power Plant Equipment
Power Tools
Pressure Vessels
Quarry Equipment
Recreational Vehicles RV
Rock Crushers
Roll Cages
Rough Terrain Forklifts
Split Rims
Tree stands
Truck Racks
Vibrating Screens
Wheel Rims
Wind Turbines
Workover Rigs

Aircraft Engine Pistons
Aircraft Engine Cylinders
Aircraft Engine Crankshafts
Airliner Components
Military Truck Components
Military Trailer Components
Military Missile Loaders
Marine Outboard Crankshafts
Marine Outboard Cowlings & Castings
Marine Inboard Manifolds
Space Station Components
Industrial Robots
Robot Gantries
Hydraulic Motors
Electric Motors
High-Speed Motor Winding Equipment
Fuel Plant Piping
Boiler Components
Generator Enclosures
All Terrain Vehicles ATV
Automotive Radiators
Automotive Mirror Housings
Automotive Battery Housings
Automotive Steering Components
Automotive Drive Components
Automotive Seating
Commercial Trucks
Truck Racks
Motorcycle Components
Agricultural Vehicles
Earth Moving Equipment
Transmission Housings
Transmission Gears
Chain Links
Medical Diagnostic Equipment
Medical Beds and Lifts
Athletic Braces
Computer Disk Drive Components
High-Precision Machining Equipment
Concrete Vibrators
Distiller Housings
Plastic Gears

Aerospace Engineering
Automotive Engineering
Design Engineering
Engineering Mechanics
Industrial Engineering
Marine Engineering
Mechanical Engineering
Vehicle Engineering
Transportation Engineering

Accident Investigation
Failure Analysis
Fatigue Analysis
Finite Element Analysis
Fracture Analysis
Linear Analysis
Material Failure Analysis
Mathematical Modeling
Mechanical Failure Analysis
Nonlinear Analysis
Queueing Theory
Stress Analysis
Thermal Analysis
Vibration Analysis

Personal Injury
Product Liability
IP Infringement

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ASME - American Society of Mechanical Engineers

Master of Science in Engineering Mechanics
University of Wisconsin - Madison
Specialized in elasticity and stress analysis

Bachelor of Science in Applied Mathematics, Engineering and Physics with Honors
University of Wisconsin - Madison
Phi Beta Kappa, Phi Kappa Phi, Phi Eta Sigma, Graduated with Distinction, Trewartha Honors Undergraduate Research Fund Grant, Radtke Scholarship - University of Wisconsin Physics Department's Outstanding Senior, James F. Lincoln Foundation Engineering Award

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Steve's expertise lies in analyzing failures due to design defects, misuse or abuse, and in analyzing designs for patent infringement. These disciplines apply to many industries; as a result, Steve has provided expert services in the energy, construction, industrial, medical, transportation, marine, commercial, utility and residential industries. He has served as an expert witness, given deposition testimony, testified in court and arbitration hearings, and supplied legal team technical support.


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Aerospace   ,   ATV's   ,   Consumer Product Design   ,   Engineer   ,   Engineer - Crane   ,   Engineering Forensic   ,   Engineering Industrial/Materials   ,   Engineering Physics   ,   Expert Witness/Services   ,   Failure Analysis   ,   Finite Element Analysis   ,   Finite Element Analysis   ,   Forensic Engineering   ,   Fork Lift Trucks   ,   Fork Lift Truck Accident Analysis   ,   Gas Plants   ,   Head Protection   ,   Helmets   ,   Industrial Accidents   ,   Industrial Machinery   ,   Ladder   ,   Man Lift Safety   ,   Material Failure Investigations/Analysis   ,   Mechanical   ,   Motorcycle   ,   Motor Vehicle Accidents   ,   Oil and Gas Oil Tanks   ,   Oil and Gas Oil Tanks   ,   Patents   ,   Patent Infringements   ,   Patent Litigation   ,   Pipelines   ,   Pressure Vessels   ,   Product Design   ,   Product Liability   ,   Stress Analysis   ,   Trucking accidents and investigation   ,   Vessel Failures   ,   Engineers/Engineering   ,   Engineering Mechanical   ,   Failure Investigation   ,   Industrial Injuries   ,   Machinery   ,   Material Failure Investigations   ,   Oil and Gas   ,   Patents/Infringements   ,   Personal Injury & Fatal Accident   ,   Quarrying Engineers   ,   Trucks/Heavy   ,   Trucks/Trailors   ,   Vibration   ,   Mathematical Modelling   ,   Patent Validity/Invalidity   ,   Consumer Product Accidents   ,   Truck Accidents   ,   Mechanical Failure   ,   Fastener Mechanisms   ,   Industrial Failure   ,   Industrial Equipment   ,   Engineering - Industrial/Oil/Gas   ,   Forensic Mechanical Engineer   ,   Farm Equipment   ,   Hunting

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