Fatigue strength

Static and dynamic tests on car bodies, bogies, parts & components

Testing and qualification using common standards such as DIN EN 12663 •  DIN EN 13749 • VDV 152 • EN 12082 • UIC regulations for fatigue strength verification of wagon bodies, bogies as well as parts and components.

Fatigue strength car bodies

Fields of application

  • Tests of head, middle, double-decker cars, tram modules or locomotive mainframes
  • Investigation of car body structures against the background of new manufacturing technologies and lightweight design
  • Validation of designs in vehicle development


  • Static test of car bodies according to DIN EN 12663, alternatively also according to other regional standards
  • Implementation of static and dynamic tests with standardised load specifications or customer-specific requirements
  • Creation of load assumptions and load spectra
  • Online display of bending lines with predictions for direct comparison with the FE model and customer presentation
  • Optical absolute displacement measurement for pre-bent car body structures
  • Measurement of strains and deformations
  • Testing under consideration of environmental conditions
  • Modal analysis

Car body test benches: Technical data

  • 2 car body test benches in parallel operation
  • Each with up to 30 hydraulic cylinders
  • Each with up to 500 measuring channels if required
  • Longitudinal compression forces up to 5,000 kN to cover US standards
  • Car bodies and/or coupled tram modules with a length of up to 32 m

Fatigue strength bogies

Fields of application

  • Approval testing of all types of bogies (EMU, DMU, locomotives, trams, freight and passenger coaches, special vehicles) according to DIN EN 13749, VDV152, UIC regulations, and other standards
  • Tests according to customer requirements in order to safeguard the function and strength of projects and new types of bogie constructions already in the development phase
  • Gaining knowledge for production optimisation and the choice of production methods


  • Static and dynamic tests with individual load components
  • Test of two- and multi-axle frames
  • Permanent damage monitoring
  • Optical measurement of the geometrical dimensions of the bogie frame before, during and after the test in coordination with the customer
  • Measurement of strains and deformations
  • Non-destructive testing, failure analysis, test programme development and on-track measurements re offered as additional services

Bogie frame test benches: Technical data

  • Two and multi-axis frames with calculated control channels
  • Bogie frame with passive and active tilting technology
  • Simulation of internal pressure
  • Static and fatigue tests on 12 bogie frame test benches in parallel operation
  • Each test bench is equipped with 30 hydraulic cylinders

Fatigue strength parts & components

Fields of application

  • Performance tests on wheelset bearings according to DIN EN 12082
  • Proof and function tests of components such as brake
    components, springs and dampers, rubber-metal-elements, axle box housings, supports, consoles, couplers, wheel-swingarms, anti-roll bars, bolsters and roof and floor panels
  • Static strength tests on multi-material leight weight
    structures such as front masks and floor sections
  • Service life tests taking into account typical vibration and oscillation influences


  • Development of test bench concepts for applying of the required test conditions/flexible test set-ups
  • Strength asessment under consideration of static and fatigue loads
  • Permanent damage monitoring
  • Non-destructive testing
  • Vibration and shock tests on high performance shakers
  • Tests under high and low temperatures



Technical data • Capacity

  • A total of 16 test benches for individual tests in parallel operation
  • Each test bench is equipped with up to 10 control and 50 measuring channels
  • 4 test benches for performance tests on wheelset bearings according to DIN EN 12082
  • Test bench for water tightness test on wheelset bearings according to DIN EN 12082
  • Use of state-of-the-art measurement and control technology as well as iteration software for increasing the test frequencies
  • Service load simulation
  • Stand alone clamping fields