Instrumental Analysis

Bench for Frictional and Wear Tests

© Fraunhofer IFAM Dresden

Tribometer

© Fraunhofer IFAM Dresden

Detailed view of a tribometer

Advantages

  • Highly reproducible due to constant testing conditions
  • Manifold sample geometries near to application cases
  • such as pins of 4 to 20 mm diameter, rings (max. diameter 112 mm) Component testing feasible
  • Qualitative assessment of materials under conditions near to practice

 

Parameters

  • Testing load 0 ... 5,000 N
  • Friction couple to be dissolved in cycles
  • Rotation to the right/left up to 8,000/min
  • Heating of the testing installation to about 300 °C
  • Testing under inert gas, fluid or abrasive media
  • Rotating motion can be overlaid by vibration
  • Oscillation from 35° to 350°
  • Stop braking upon electronic rotating mass simulation

 

Measuring variables

  • Frictional moment (max. 10 Nm)
  • in situ measurement of total abrasion
  • Temperature
  • Acoustic emission

 

 

Range of applications

  • Materials development
  • Generation of material data sheets
  • Pin/disk testing according to DIN 50324
  • Testing of friction couples at original parts vibrating in rotating direction whereby vibration is overlaid a very low speed value (amplitude and frequency can be selected), at increased testing temperature.
  • Operational testing (stop braking) of materials for clutches and brakes
  • Testing of friction couples whereby rotating direction is changed (moving about, hinges or plunger/ cylinder) by oscillating rotating motion
  • Testing on impacts by abrasive media, Testing installation pin/ disk, or ring/ disk with cyclic dissolving and pressing against the frictional couple, thus, fresh abrasive material is getting to the frictional surface again and again.