Something you want to Know about Universal Testing Machine

A universal testing machine, which is also called a universal material testing machine, is the product of the combination of modern electronic technology and mechanical transmission technology.

 

Today, let’s talk about some information about universal material testing machines.

 

 

Main functions of universal testing machine

 

General test items

 

Tensile stress, tensile strength, elongation at break, constant tensile stress, constant stress elongation, constant stress value, tear strength, force value at any point, elongation at any point, pull-out force, adhesion force, and the calculated value of peak value, pressure test, shear stripping force test, bending test, pull-out force puncture force test.

 

Special test items

 

1. The coefficient of elasticity is the definition of Young's modulus of elasticity: the ratio of normal stress components in the same phase to normal strain. To determine the coefficient of rigidity of materials, the higher the value, the stronger the material.

 

2. Proportional limit: the relationship between load and elongation can be maintained in direct proportion within a certain range, and its maximum stress is the specific limit.

 

3. elastic limit: the maximum stress that the material can bear without permanent deformation.

 

4. Elastic deformation: after removing the load, the deformation of the material disappears completely.

 

5. Permanent deformation: after removing the load, the material remains deformed.

 

6. Yield point: when the material is stretched, the deformation increases rapidly and the stress remains unchanged. This point is the yield point. The yield point is divided into upper and lower yield points. Generally, the above yield point is used as the yield point. Yield: when the load exceeds the proportional limit, it is no longer proportional to the elongation. The load will drop suddenly and then fluctuate up and down over some time, resulting in great changes in elongation. This phenomenon is called yield.

 

7. Yield strength: the load on which the permanent elongation reaches a specified value during tension, divided by the original cross-sectional area of the parallel part.

 

8. Spring K value: the ratio of the force component in the same phase with the deformation to the deformation.

 

Operation procedure of universal testing machine

 

1. Turn on the power supply of the computer monitor, controller, and host.

 

2. Enter the online parameter interface, set the sensor, and click the online button.

 

3. Click the up and down buttons on the right or drag the speed scale to move the beam up and down to the appropriate position.

 

4. Install the corresponding collet according to the sample form.

 

5. Set the test scheme and test parameters.

 

6. The initial value of the sensor of the electronic tensile testing machine is set to zero.

 

7. Install the sample and sensor.

 

8. Click the start test button to start the test and stop automatically after the test.

 

9. Install the next specimen and repeat the step.

 

10. Until all samples are tested.

 

11. Print the test report with the electronic tensile testing machine.

 

12. Turn off the host, controller, and computer monitor.

 

13. Clean the test site.

 

Precautions for universal testing machine

 

1. During the test of the universal testing machine, guardrails shall be set around the sample to prevent the sample from flying out at the moment of fracture and wounding people.

 

2. When replacing the sample clamping device, pay attention to the center of gravity of the device to prevent the device from toppling, injuring personnel, or damaging the universal testing machine. When installing the sample, pay attention to centering as much as possible.

 

3. After the test, clean and restore the test site, and ask the test machine manager to check the condition of the test machine and make test records.

 

4. If any accident is found during the test, immediately press the red emergency stop button on the base of the universal testing machine and ask the management personnel of the testing machine to check.

 

It is of great significance to ensure the normal operation accuracy of the universal testing machine. We are the universal testing machine suppliers, any interests, welcome to contact us.