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Biaxial and Triaxial Testing Machines
The H.11 series servo-hydraulic biaxial dynamic testing machines are designed to perform low- and high-cycle fatigue tests, fracture toughness evaluation, and crack propagation analysis, among other applications.
This series is characterized by high frame stiffness, long service life, mechanical durability, and self-damping of resonances.
The wide range of hydraulic power units enables dynamic loading of specimens with forces up to 250 kN and frequencies up to 50 Hz.
H.11 Series Features
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- Robust vertical load frame design with extremely high lateral stiffness, as well as excellent resonance resistance and mechanical stability in dynamic mode for each test axis
- Powerful and compact HAD series hydraulic power units with low noise levels, designed for fatigue testing with water cooling
- HALT 18 hydraulic unit diagnostics system controlled via standard SIEMENS TOUCH LCD
- Individual axis control using proportional or servo valves in both force and position control loops
- Test & Motion – DYNPACK materials testing software providing complete test control and evaluation
- Compliance with all relevant CE directives for machinery and equipment, including new safety functions according to EN ISO 13850-SIL 1/PL
- Combined torsion load cells mounted on the piston rod, operating with accuracy classes according to EN ISO 7500-1 and ASTM E4, with linearization capability
- Compact EDCi Control – BIAXIAL measurement and control electronics, specifically designed for high-performance applications, with real-time synchronization of all measurement and control channels at a sampling rate of 10 kHz
- Analog signal resolution level: ±250,000 divisions (20 ms)
- Integrated BENTROD alignment measurement and adjustment unit for each axis, designed for evaluation and optimization of concentricity and edge alignment according to ASTM E1012
- Dynamic hydraulic wedge grips designed for clamping flat transverse specimens with proper centering
- Advanced EOX axial, transverse, and biaxial video extensometer using state-of-the-art digital image correlation (DIC) technology with a telecentric lens
- High-precision testing with temperature chambers or high-temperature furnaces
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