Tensile and compressive fatigue testing machine for metal materials

The metal material tension-compression fatigue testing machine is mainly suitable for all kinds of metal, nonmetal materials and elastic elements. It is a special fatigue mechanics testing equipment designed and manufactured in strict accordance with the test specifications required by national standards. The equipment has high testing accuracy, fast frequency and accurate deformation to 0.01mm, which can test specimens with large deformation and also suitable for specimens with small deformation.

Equipped with different assistive devices, it can test the fatigue life of tensile fatigue, compression fatigue, tension-compression fatigue, bending fatigue, shear fatigue and special methods. The fatigue indicator test of shock absorber can also be carried out.The whole cycle test process of the sample is automatically completed by microcomputer control, which can detect the force attenuation, tensile and compressive load, tensile and compressive displacement and dynamic fatigue durability of the sample. Users can adjust the test program according to the actual needs and print out the test report, which is very convenient to operate.

Functional features:

1. The system is mainly powered by a mechanical linear actuator, and vertically reciprocates to meet the requirements of fatigue testing of samples;

2. The response frequency of imported servo motor is 2.0kHz, and the response speed is fast; The beam moves smoothly and there is no vibration when it stops;

3. The load sensor has 150% overload capacity and is placed at the front end of the actuating piston with a self-locking nut;

4. The system adopts anti-gap device to reduce the impact of high-frequency tension and compression test and effectively improve the test waveform;

5. The repeated positioning accuracy of the mechanical linear actuator is above ±0.01mm, with low noise, energy saving, cleanliness and high rigidity;

6. Single-channel digital servo controller is used as system controller, with signal conditioning unit of force and displacement (expandable);

7. Servo control has three closed-loop control loops of load, displacement and deformation, and each control mode has smooth switching function;

8. Signal generator waveform types: sine wave, square wave, angular wave, oblique wave and external input wave, etc.

9. The control system is equipped with a variety of application software and suites to choose from.

1. The maximum test force is 0-100kN (optional)

2. The accurate measuring range is 2%FS.-100%FS.

3. Dynamic indication fluctuation is ≤ 1% fs.

4. The amplitude fluctuation is not greater than 2% fs of each gear.

5. The maximum amplitude is ±250mm, and the precision error is not more than 1% fs.

6. Test frequency range 0.01—15Hz (customizable)

7. The main test waveforms are sine wave, square wave, angular wave, oblique wave and external input wave.

8. The maximum stroke of the actuator is ±125mm, and the indication accuracy is ±0.5%FS.

9. The main test waveforms are sine wave, triangle wave, square wave and oblique wave, etc.

10. Control mode Full-automatic displacement and load control.