Fraunhofer Institute for Material and Beam Technology IWS
Ultrasonic fatigue testing system for determination of fatigue strength at a load frequency of 20 kHz
Modern resonance pulsator with a testing frequency of about 1,000 Hz
Classic resonance pulsator for fatigue and crack growth experiments
Equipment
2 ultrasonic fatigue testing machines (f ≈ 20 kHz)
- High frequency fatigue testing up to 108 – 1010 load cycles
- Material specific sample geometries (round or flat samples)
- Already tested geometries: 100Cr6, Ti-Leg., Ni based alloys, Al alloys, various steels
2 electromagnetic resonance pulsators (f ≈ 1.000 Hz)
- Technical data: Fmax ≤ 50 kN
- Testing of material samples and components
- Operational test conditions (temperature, oil bath, salt fog, etc.)
1 electromagnetic resonance pulsator (40 Hz ≤ f ≤ 250 Hz)
- Technical data: Fmax ≤ 100 kN
- Testing of material samples and components
- Operational test conditions (temperature, oil bath, salt mist, etc.)
Application
- High frequency fatigue testing of material samples and components in the HCF and VHCF range (load cycles up to 1010)
- Determination of fatigue strength under operational test conditions of different states, manufacturing parameters etc. by means of HF fatigue testing
- Single stage testing, bloc-program testing
- Load increase tests, staircase tests, fatigue tests with holding times
- Tension/compression tests
- Fatigue crack growth, da/dN, determination of fracture toughness