Ultrasonic Fatigue Testing System

With the ultrasonic fatigue testing system USF-2000A in standard- or mean stress configuration fatigue tests in the Very-High-Cycle-Fatigue (VHCF) range can be performed time- and cost-efficiently with the frequency 20 kHz. Results about the fatigue behaviour and the fatigue strength at 107 cycles will be available after ca. 10 minutes and at 1010 cycles after ca. 6 days.


  • Economic determination of the fatigue behaviour and the fatigue strength, i.e. usage for variety inspection in research and development or quality control in mass production
  • Accelerated evaluation of the performance capability at 20 kHz, even tests until 1010 cycles are completed after ca. 6 days
  • High-precision stress- and amplitude control for excellent result quality  
  • Windows software package includes all necessary actions from specimen design (without FEM skills) until user-friendly test execution and evaluation
  • Compact system design for various installation possibilities without necessity of a lab infrastructure (cooling water, hydraulic oil etc.)
  • Mean stress loading is available as option: More information

[Complete service life of...]

(PDF, 6,7 MB)

[System Configuration]

Name Description
Main Unit Ultrasonic Fatigue Testing Machine
USF-2000 Standard Configuration
Consists of:
  1) Main unit
  2) Ultrasonic resonator system
  3) Personal Computer
  4) Software

Stroke Sensor, USF-2000

Displacement measuring Sensor (eddy current type displacement sensor, resolution 0.5 µm)
Calibrator Displacement sensor calibrator (High-Performance Micrometer CDE-25 C1)
Displacement Recorder Displacement recorder, High speed data logger for waveform capture (Minimum sampling speed 1Mhz), Measurement laptop computer (not included in the delivery)


Test frequency 20 kHz ±500 Hz (recommended test range 20 kHz ±30 Hz) * The test frequency is determined by the resonance frequency of the specimen.
Nominal Stress 100MPa – 1200MPa
Test piece end face amplitude ±10 to ±50 µm
Test stress range Stress when the specimen undergoes ±10 to ±50 µm displacement *The stress value depends on the specimen shape and physical properties.
Power requirements
200 V 1-phase: 3.5 kVA (ultrasonic fatigue testing system)
100 V 1-phase: 1 kVA (including PC, displacement recorder, air drier)
  Mean stress max 1.5 kN tensile force can be applied to the specimen during the test

[Material Classes]

Testable materials Materials that can resonate at 20 kHz, and that generate little heat when resonating (such as high-strength steel, duralumin, titanium alloys, aluminum)

[Application Areas]

Determination of the fatigue behaviour and the fatigue strength in the VHCF-range

* Appearance and specifications are subject to change without notice.

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