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Servo-hydraulic testing machines for fatigue testing
Fast facts
Servo-hydraulic fatigue testing systems – maximum rigidity and reliability in dynamic testing
ZwickRoell's servo-hydraulic test frames are specifically designed for fatigue testing and crack growth analysis, where high measurement accuracy and frame rigidity are critical. They are used to determine material properties under cyclic loading, including:
- High-Cycle Fatigue (S-N) / Wöhler Curves
- Low-Cycle Fatigue (LCF)
- Fracture mechanics and fracture propagation
The test actuator can be mounted above or below the test area, depending on ergonomics and the type of test. The actuator features hydrostatic bearings, which provide very low friction, minimal wear, and a long service life—even under high loads and at high frequencies.
The systems are powered by separate hydraulic power units, which are available in various power ratings to suit your needs. With extremely high frame rigidity and a precision-controlled tool and load cell mount featuring a guide pin and flange, exceptional alignment and repeatability are achieved in all test sequences.
ZwickRoell's testing systems always come equipped with testControl II electronics and testXpert software, ensuring precise control, data acquisition, and analysis—all integrated and user-friendly.
ZRS is there to help you every step of the way—from configuration to installation, calibration, and long-term service.
Advantages of servo-hydraulic testing machines:
Advanced Testing – Supports both HCF and LCF tests as well as tensile testingHigh load capacity – Capable of handling demanding material tests under extreme conditionsPrecision and reliability – Provides accurate data for material analysis.Highly rigid load frames ensure that the applied load is transferred directly and evenly to the test specimenA rigid frame makes it easier to maintain a constant voltage throughout the entire test cycle, allowing for precise control of voltage levels.Lower risk of resonance frequencies
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