Novel three-point bending experimental device

Abstract

The invention relates to the technical field of material performance testing, in particular to a multifunctional material bending experimental device. The experimental device comprises a base, a scaleline on the base for aligning two supports, a first support and a second support for supporting a sample, a removable and replaceable three-point bending and four-point bending indenter and a pulleyfor adjusting the positions of the two supports. The position of the support can be adjusted accurately through the pulley, and the purpose that measurement can be carried out under different bendingmoments is achieved; different grooves are opened in the top parts of the two supports, a corresponding form is adopted for a different sample, and the sample can be better fixed; a material three-point bending experiment can be carried out, and also, a four-point bending experiment can be carried out by replacing the indenter; and the device is the removable device and can be directly connected with a tensile testing machine, the operation is simple, and the application range of the experimental equipment can be greatly increased.

Description

technical field [0001] The invention relates to the technical field of material performance testing, in particular to a multifunctional material bending test device. Background technique [0002] Material bending test is a test to determine the mechanical properties of materials when subjected to bending loads. It can measure the performance indicators of materials such as stiffness, strength, load-deflection, etc. It is one of the basic methods of material mechanical performance tests. The material bending test is usually based on three-point bending, but due to its concentrated loading method and uneven distribution of bending, defects in certain parts may not be observed, and the expected effect cannot be achieved, while the four-point bending test is relatively more uniform due to the loading , and the three-point bending test can be corrected at the same time. In the existing experimental devices, only three-point bending or four-point bending experiments can be perfor...

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Problems solved by technology

[0004] 1) Only three-point bending or four-point bending experiments can be performed on materials, and the experimental results cannot be corrected, and the expected results cannot be achieved;

[0005] 2) When adjusting the position of the support, errors are prone to occur, and it is not easy to operate, and the position of the support cannot be well determined;

[0006] 3) Samples of different shapes cannot be fixed well, and it is easy to loosen during the experiment, resulting in experimental errors;

[0007] 4) The experimental device is not easy to disassemble, and the operation is more troublesome

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