High-frequency resonance fatigue testing machine and electro-hydraulic servohydraulic fatigue testing machine are two common types of fatigue testing equipment, and they have some differences:
1.Working principle: The high-frequency resonance fatigue testing machine simulates the fatigue failure of the material by generating a high-frequency vibration load, which is usually realized by motor drive and has a high test frequency. The servohydraulic fatigue testing machine is driven by a hydraulic system, and the fatigue test is realized by adjusting the pressure and position of the hydraulic device.
2.Load range: High-frequency resonance fatigue testing machines are usually suitable for fatigue testing in the small load and high frequency range to evaluate the fatigue properties of materials. The servohydraulic fatigue testing machine usually has a large load range, which is suitable for fatigue testing in the large load and low frequency range.
3.Control mode: The high-frequency resonance fatigue testing machine usually adopts a controller to realize the automatic control of the test process, which can pre-set the test parameters and actively monitor the test process. The electro-hydraulic servohydraulic fatigue testing machine usually realizes the control of the test process through the PID control algorithm, which has high control accuracy and stability.
4.Applications: The high-frequency resonance fatigue testing machine is mainly used in the study of material fatigue characteristics, fatigue strength evaluation, etc., and is suitable for aerospace, automotive, electronics and other industries. The electro-hydraulic servohydraulic fatigue testing machine is usually used for fatigue strength testing of large structures, such as bridges, ships, wind turbines, etc.
It is necessary to select the appropriate fatigue testing machine according to the specific application requirements and test requirements.
Fatigue testing machine