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Types of tensile testing machines

Types of tensile testing machines

Tensile testing machine is used to test the breaking force, elongation, tensile strength, deformation, etc. of materials. The following is an introduction to the types and characteristics of tensile testing machines for reference:

1. According to the degree of automation, tensile testing machines can be divided into the following types

Pointer tensile testing machine: It is a traditional tensile testing machine. This tensile testing machine has low test accuracy and has now been replaced by a digital display tensile testing machine. However, when testing very small samples, pointer-type tensile testing machines, such as dynamometers, are also used because the test force value is small and the price is low.

Digital tensile testing machine: also known as microcomputer tensile testing machine, the test data is directly displayed on the LCD screen. The microcomputer type controller can use the button type or the touch screen type. This type of tensile testing machine test items are relatively fixed and cost-effective, and are often used in factory quality control.

Computer-controlled tensile testing machine: The test data is collected by computer software, and the test results can be automatically calculated, and the test methods can be added or edited. The test data can be printed out in the form of a report, and it can also be connected to the internal control network to upload the test data in real time. This type of tensile testing machine is often used in scientific research units, testing institutions, new product development, etc.

2. According to the industry and functional characteristics, tensile testing machines are usually classified as follows

Metal tensile testing machine: The tensile strength of metal materials is large and the elongation is small, so an extensometer is usually required.

Rubber tensile testing machine: The elongation of elastomer or rubber is relatively large, and a large deformation measuring instrument is often required. At the same time, the design of the test fixture should consider the characteristics of the rubber sample, and it should not slip during the test process. O-ring fixtures, special fixtures for tire industry and other special fixtures can also be added.

Plastic tensile testing machine: The elongation of plastic materials is large or small, and the tensile strength is larger than that of rubber, and it is usually necessary to test the bending strength.

Textile tensile testing machine: The textile industry needs to test the peeling performance, puncture force, tearing performance, single yarn tensile performance, etc. of the fabric, and the fixtures and software need to be customized.

Paper tensile testing machine: The paper industry needs to test tensile strength, ring pressure strength, flat pressure, vertical pressure, peel strength, edge pressure, etc. There are many types of fixtures.

Leather tensile testing machine: The test items of leather are usually tensile strength, tear strength, etc.

3. According to the test material, the tensile testing machine can be divided into metal material tensile testing machine and non-metallic material tensile testing machine

4. According to the control system, the types of tensile testing machines are as follows

Frequency conversion system tensile testing machine: The tension, compression and speed of the system are controlled by the variable speed governor

Servo tensile testing machine: controlled by servo motor, the test speed and accuracy are more accurate, and it can be used for constant speed test, cycle test, programming test, etc.

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