How to choose a tensile testing machine

 

　　 1. Thin film materials mainly detect the tensile force and elongation of the material. Since most thin film materials have high elongation, a large-stroke testing machine is required. For example, a tensile testing machine with a stroke of 1 meter;

 

2. Rubber materials, mainly for testing the tensile strength and elongation of the material. This material has a high elongation, sometimes reaching more than 1000%. A large-stroke tensile testing machine must be used. Usually the test space will not be less than 900mm. Even bigger. This material has high requirements for elongation detection, and displacement instead of deformation can no longer meet the test requirements. Therefore, a large deformation measurement system is indispensable;

 

3. Ordinary plastics are mainly used to test the tensile strength and elongation of materials. Usually, the stretching space is not large and will not exceed 600mm; you can also add appropriate fixtures to make the bending strength and bending modulus of the plastic. ；

 

4. Waterproof coiled material. This material usually uses a tensile testing machine of 1000-5000N to test the maximum test force and elongation of the material. Due to the addition of many additives to the new material, it has a higher requirement for the fixture of the testing machine. High, otherwise, the test data is inaccurate;

 

　　5. The packaging belt and protective net are mainly used to test the maximum test force. The test space is not required. Generally, the stretching stroke of 100-200mm is sufficient;

 

　　6. ​​Wires and cables are usually tested with the maximum test force, the test space is not large, and the requirements for fixtures are also high;

 

7. Copper wire, aluminum wire, steel wire and other metal wires are mainly used for testing the tensile strength and elongation rate of materials. The elongation rate of non-ferrous metals is high, up to 50%, and the elongation rate of steel wire is extremely low. It is difficult to detect the length rate, and a tensile testing machine with higher specifications is required;

 

8. Aluminum foil and copper foil, mainly to detect tensile strength and elongation. Because the material is very thin, usually between 0.005 and 0.2mm, it is very important for the vertical stretching of the material. If you are not careful, the stretching of the material will be changed. In order to tear, the result is quite different from the true value. The coaxiality, universality, and equipment rigidity of the upper and lower clamps of the product are important to it;

 

　　9. The paper mainly detects the maximum test force and tearing force, and the clamping of the fixture becomes the key to the test accuracy;

 

　　10. Non-woven geotextile, mainly for testing the performance of maximum test force, tearing, puncture, bursting, etc., and requires high neutrality and firmness of product fixtures;

 

　　How to choose a tensile testing machine? After an introduction by Shanghai Qianshi, are you clear about this issue? There will be subtle differences in the functional characteristics of different parts of the test machine. If you want to obtain a machine with good product performance and functions, it is not enough to look at the function introduction of the machine itself. When buying a machine, the main thing is to see what you want to do. Kind of test, to achieve what kind of test purpose, buy a machine suitable for your test purpose.

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