Requirements for installing of universal tensile test machine fixture

A universal tensile testing machine is a multifunctional tensile machine, which is widely used in machinery, electronics, universities, research institutes, and other industries. With the progress of technology, it is used in the tensile test, compression test, bending test, stress relaxation or creep test of metal, plastic, rubber, film, fiber, glass fiber, paper, textile, and other metal materials, non-metallic materials and composites, as well as the tensile, peeling and welding strength test of mechanical components and electronic components.

Today, we’ll talk about the requirements for the installation of a universal tensile testing machine fixture.

What is the fixture of the universal tensile testing machine?

The fixture is an indispensable part of the universal tensile testing machine. The universal tensile testing machine holds the sample through the fixture, and judges whether the material is qualified and reaches the predetermined performance index through the force adding device, force value display device, and record. Without the available fixture, these cannot be judged.

The fixture is a part of the universal tensile testing machine that often changes according to the change of material samples. Different materials need different fixtures. The fixture is an important factor in whether the test can be carried out smoothly and the accuracy of test results. Because the tensile testing machine can measure the performance of a variety of products, the particularity of fixture structure is formed due to the different structures and appearance of various samples.

Therefore, reasonable and correct use of the fixture is conducive to the smooth progress of the test.

Requirements for installation of universal tensile testing machine fixture

1. The correct clamping of the sample is very important to the test, which directly affects the success or failure of the test and the accuracy of the test data;

2. For rectangular samples and brittle samples, clamping is more important;

3. When clamping, install the sample in parallel before and after as far as possible, and then stretch after parallel;

4. In the steel wire winding fixture, the wire pressing cannot occur, which will cause local stress concentration and often break from the wire pressing point, resulting in the difference of breakpoint;

5. For the wedge-shaped clamp, the left and right alignment of the sample is guaranteed by the clamp, but it is easy to skew the front and back. After skewing, the stress on both sides of the sample is uneven in the tensile process, which may tear the sample or have a poor breakpoint;

6. For lapped specimens, the lapped surface shall pass through the force action center of the sensor.

To sum up, when we install the fixture, the general principle is to make the force action line of the sample coincide with the force action line of the sensor as much as possible. For users, before each step of operation, they should carefully read the relevant product instructions and operate in strict accordance with the relevant operations, to better operate the universal tensile testing machine.

If you need more relevant information such as universal tensile testing machine price or universal tensile testing machine working principle, please consult our customer service staff through the website, and we will serve you wholeheartedly.