Fatigue strength of stabilizer bars

Relevant influences

  • Mechanical loading as a result of
    •  Bar torsion
    •  Axle kinematics
  • Corrosive environmental conditions
  • Damage to surface and coating caused by stone impact

Experimental verification

  • Pre-damage caused by stone impact
  • Corrosion in alternating cycle tests developed by the German Association of the Automotive Industry (Verband der Automobilindustrie, VDA)
  • Tests with original stabilizer bars in installation position
  • Optional tests with simulated compression kinematics on full axle configuration
  • Vibration fatigue tests with fixed or variable amplitudes
  • Statistical validation with systematic testing and a sufficient number of test items


Benefits of IABG stabilizer bar test benches

  • Energy efficiency by utilising the principle of resonance in tests
  • Reliability and low maintenance
  • Exclusion of exogenic forces and vibrations
  • Tests with original stabilizer bar bearings and full axle configuration
  • Tests for up to 42 mm thick stabilizer bars
  • Software-based testing, documentation and evaluation
  • Accepted by all leading car manufacturers
  • Compliant with German OEM standards (AK-LH 07) for springs and stabilizer bars