0102030405
Soil Foundation Loading Fatigue Testing Machine
Purpose and scope of application
The soil fatigue testing device includes a fixed plate and settlement plate, a reaction frame, a data acquisition instrument, and a pressure-displacement sensor.
The fatigue testing machine can control and conduct various dynamic and static mechanical property tests. The self-contained software communicates with the control system. While controlling the test system, it also plots cyclic and static force test curves and independently manages various test functions, including data storage and test report printing. For details, see the software operating instructions.
Common testing software is divided into static force testing and cyclic force testing. Static force testing is further divided into damage testing and creep testing. Cyclic force testing is divided into load cyclic force testing and constant displacement cyclic testing. The test automatically stops after a breakage test results in failure; the fatigue test automatically stops after the set number of tests is reached.
Manual control is available at any time. This function allows for manual adjustment of the cylinder position and is used during test installation, emergency shutdown, and equipment commissioning.
TECHNICAL PARAMETER
I. Loading System and Static and Dynamic Servo Cylinders:
1. Soil Test Chamber Dimensions: 1.5m long x 0.8m wide x 1.5m high (customizable).
2. Crossbeam Vertical Movable Range: 1000mm
3. Servo Actuator Stroke: 210mm
4. Cylinder and Crossbeam Ascending and Lowering Rates: 0.1mm/min to 100mm/min.
5. The servo actuator can be moved upward or downward, stopping and starting the test at any position.
6. Servo Actuator. Maximum Output: 100 kN
7. Optional Connected Force Sensors:
Spoke-Type Force Sensor Range: (0-5) kN; Class 1
Spoke-Type Force Sensor Range: (0-50) kN; Class 1
Spoke-Type Force Sensor Range: (0-100) kN; Class 1
8. Cylinder Displacement Sensor: (0-210) mm; Accuracy: 0.01 mm
9. Dynamic Cylinder Amplitude: (0.02-0.5) mm
10. High-Pressure Oil Pipe: Pressure Resistance: 34 MPa
11. Jet Tube Electro-Hydraulic Servo Valve: Voltage: 8 mA; Rated Pressure: 21 MPa; Rated Flow: 30 L/min
II. Servo Oil Source
1. Rated Working Pressure: (0-31.5) MPa 2. Working Medium (Oil): YH-10 (SH0358-1995) aviation hydraulic oil. Recommended oil grade 25 in summer and 46 in winter. The oil must be replaced after 1500 hours of continuous operation. 3. Ambient temperature: -10°C to 45°C
4. Oil temperature alarm: 0°C to 60°C (factory preset)
5. Power supply voltage: 380V; Frequency: 50Hz
6. Motor power: 37kW; Speed: 1470r/min
7. Oil cooling: Cooling power: 2000W; Voltage: 220V
8. Differential pressure generator: Working pressure: 32MPa; Trigger pressure: 0.35MPa
9. Maximum pump output flow: ≥100L/min
10. Main oil gauge: Range: (0-40)MPa; Accuracy: Class 2.5
11. Oil return gauge: Range: (0-6)MPa Accuracy: Class 2.5
12. Servo Oil Source Dimensions: 1300mm × 1200mm × 1750mm
III. Fatigue Test Loading Parameters
1. Static Full Force: 100kN
2. Dynamic Full Force: 50kN
3. Test Frequency Range: 0.1Hz–25Hz, configurable
4. Main Test Waveform: Sine Wave
5. Loading Rate: 0.001kN/s–30kN/s, configurable
6. Loading Speed: 0.1mm/min–100mm/min, configurable
7. Specimen Deformation Displacement Sensor: (0–20)mm, 0.001mm accuracy
8. Vibration Pressure, Frequency, and Waveform Settings: 13 Continuous Vibration Ranges
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