Fatigue and Fracture Mechanics

Regarding fatigue and fracture mechanics we and our students deal with a variety of different topics. In this context, we include the following points to our range of services:

  • Detail design
  • New cutting and welding methods
  • New materials
  • Production and in-service influences on fatigue and fracture behaviour

Capabilities

1) Stress- and strain-based fatigue testing of base material and welded specimen

  • Under tension-tension, tension-compression, and compression-compression loading
  • Torsion loading
  • At temperature ranging from -180°C to 600°C

2) Fatigue crack growth rate measurements

  • Under tension-tension, tension-compression, and compression-compression loading
  • At temperature ranging from -180°C to 600°C

3) Charpy impact and fracture toughness testing

  • Charpy, CTOD, J-integral testing and determination of R-curves
  • Under tensile, bending, shear and mixed-mode loading
  • At temperature ranging from -150°C to 100°C
  • By means of mechanical and 3D optical measurement systems

Equipment

Our laboratory is equipped with a number of various test machines and measurement devices.

  • Fast dynamic resonance pulser (frequency ca. 30 Hz) with constant or variable loads of up to 200 kN / 600 kN as well as different stress ratios
  • Uniaxial servo-hydraulic test facilities with individual adjustable loads of 25 kN to 1250 kN
  • Testing under 3- or 4-point bending
  • Cylinders in fixed frames for tensile, bending, shear, and mixed-mode loading
  • Drop tower for impact testing
  • Charpy impact testing equipment

Current Projects

Completed Projects (since 2000)