Scope of application:Electro-hydraulic servo structure dynamic fatigue testing machine is mainly used to test the dynamic and static mechanical properties of various structural parts, parts, buffer blocks, rubber elastomers, shock absorbers, beams and columns and other large products. Tensile, compression, bending, low cycle and high cycle fatigue, crack propagation and fracture mechanics tests can be carried out under sine wave, triangular wave, square wave, trapezoid wave and combined waveform. Environmental test devices can also be configured to complete environmental simulation tests at different temperatures.
Performance characteristics:1, testing machine host: column, base, beam form a closed frame structure, frame stiffness, no reverse gap, good stability. The outer surface of the column is treated with hard chromium plating. The servo actuator (cylinder) is placed on the upper side and adopts the design of bidirectional acting cylinder piston. The sample clamping adjustment is convenient and flexible.
2, key components: the use of international well-known brands - MOOG servo valve, Germany DOLI controller, Japan Fujikoshi oil pump, the United States Shihua sensor, the United States MTS displacement sensor.
3, hydraulic servo pump station: the use of no leakage quiet technology, stable pressure output, no fluctuation, low noise, good heat dissipation effect, high filtration accuracy, pressure overload, oil temperature overtemperature automatic protection.
4, control mode: force, displacement, deformation PID closed-loop control, and can achieve any control mode smooth without disturbance switching.
5, test software: suitable for Windows test platform operation, with the control system, can control the test system to complete all kinds of dynamic and static mechanical property tests, such as metal tensile, compression, bending, low cycle and metal fracture mechanics tests, and independently complete all kinds of test management, data storage, test report printing and other functions.
6, test waveform: sine wave, triangular wave, square wave, random wave, sweep wave, combined waveform, etc.
7, protection function: with oil circuit blockage, overtemperature, low liquid level, hydraulic system overload, motor overheating, preset fatigue times to, specimen fracture alarm shutdown function.
According to the criteria:1, in line with GB/T2611-2007 "testing machine general technical requirements", GB/T16826-2008 "electro-hydraulic servo universal testing machine", JB/T9379-2002 "tensile fatigue testing machine technical conditions" requirements;
2, meet the GB/T3075-2008 "Metal axial fatigue test method", GB/T228-2010 "Metal material room temperature tensile test method" and other standards;
3, applicable to GB, JIS, ASTM, DIN and other standards.
Product parameter table:| Testing machine type | HJ-9001S | HJ-9002S | HJ-9003S | HJ-9004S | HJ-9005S |
| Maximum dynamic load (kN) | ±20 (±30) | ±50 | ±100 | ±200 (±250) | ±500 |
| Test frequency (Hz) | Low cycle fatigue 0.01~20, high cycle fatigue 0.01~50, customized 0.01~100 |
| Actuator stroke (mm) | ±50, ±75, ±100, ±150 and customized |
| Test load waveform | Sine wave, triangle wave, square wave, oblique wave, trapezoid wave, combination of custom waveform |
| Measurement accuracy | load | Better than the indicated value ±1%, ±0.5% (static); Better than indicated value ±2% (dynamic) |
| deformation | Better than the indicated value ±1%, ±0.5% (static); Better than indicated value ±2% (dynamic) |
| displacement | Better than the indicated value ±1%, ±0.5% |
| Test parameter measurement range | 1~100%FS (full scale), can be extended to 0.4 ~100%FS | 2~100%FS (full scale) |
| Test space (mm) | 50 ~ 580 (extensible customization) | 50~850 (extensible customization) |
| Test width (mm) | 500 (Extensible customization) | 600 (Extensible customization) |
| Oil source configuration (21Mpa motor power) | 20L/min (7.50kW), 40L/min (15.0kW), 60L/min (22.0kW),00L/nin (37.0kw) discharge oil sources work in combination according to requirements, with optional pressure of 14, 21, 25mpa |
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