How does a fatigue tester work?

 

1. Sample Preparation:
First, a test sample needs to be prepared, this can be a sample of a metallic material, an alloy, a plastic, a rubber or other material. Sample preparation may include steps such as cutting, machining, and preparing standard sizes to ensure consistency and repeatability.

 

2. Loading method:
The fatigue tester usually uses cyclic loading to apply stress to the sample. Depending on the specific test requirements, different loading methods can be used, such as bending, tensile, compression or torsion.

 

3. Loading parameter setting:
Before conducting a fatigue test, it is necessary to determine the loading parameters, such as loading amplitude, frequency, test temperature, etc.. These parameters are selected and set according to the test standard, material properties and specific research needs.

 

4. Testing process:
The sample is placed in the fatigue tester and loaded cyclically according to the set loading parameters. The tester applies a predetermined loading pattern and amplitude, cyclically loading and unloading the sample. Such cyclic loading process simulates the cyclic stresses that may be encountered by the material in actual use.

 

5. Recording and monitoring:
During the testing process, the fatigue tester records the number of loadings, the amplitude of the loadings, the stresses and strains in the samples, and other relevant data. These data can be used to monitor the fatigue performance and damage level of the sample.

 

6. Fatigue life assessment:
The fatigue life of the sample can be assessed by loading the sample for a certain number of cycles. Fatigue life is defined as the number of times or the life of a sample that undergoes damage after a certain number of cyclic loading.

 

7. Result analysis:
Finally, based on the test data and evaluation results, the results can be analyzed and compared to assess the fatigue performance of the material or component, such as fatigue life, fatigue strength or other relevant parameters.

 

It should be noted that the specific working principle and operation procedure of fatigue tester may vary depending on different equipment types, test methods and application areas. Therefore, before performing a fatigue test, you should refer to the equipment manufacturer's operating manual or the relevant test standard to ensure proper operation and correct interpretation of the test results.