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Direct tensile test jag of incompressible material

A tensile test and fixture technology, applied in the direction of analyzing materials, measuring devices, instruments, etc., can solve problems such as deformation and falling off, large deformation of the clamping end, distortion, etc.

Active Publication Date: 2015-07-22
TONGJI UNIV
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  • Abstract
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Problems solved by technology

[0005] 2. The tolerable test force is relatively large
[0006] However, when it is used for incompressible materials, there are some problems in the above-mentioned conventional clamping method: because the incompressible material is directly clamped due to large deformation, the clamping end slips and the test data is distorted, and even falls off when the deformation is too large unable to complete the test

Method used

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  • Direct tensile test jag of incompressible material
  • Direct tensile test jag of incompressible material

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Embodiment Construction

[0019] The technical solution of the present invention will be further introduced below in conjunction with the accompanying drawings.

[0020] The tensile test jig of the invention is suitable for direct tensile tests on incompressible materials, has reliable clamping, and does not slip. Such as figure 1 , figure 2 As shown, the structure of the tensile test fixture is composed of two parts that are mutually symmetrical up and down, and each part is composed of six parts, which are fixed joint 1, adapter chuck 2, two connecting plates 3, bolts 4, metal rod5. The connection of the six parts in the above part is introduced as an example, among which:

[0021] The upper end of the fixed joint 1 is connected with the testing machine (not shown in the figure) through a metal rod (not shown in the figure), and the lower end of the fixed joint 1 is connected with the adapter chuck 2 through a threaded rod;

[0022] The upper section of the adapter chuck 2 has a threaded hole, w...

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Abstract

The invention relates to a direct tensile test jig of an incompressible material, and belongs to the field of building material test devices. The direct tensile test jig is composed of fixed joints, switch chucks, connection boards, bolts and metal rods, solves a problem of test incompletion caused by data distortion even shedding because of the sliding of a test piece at the clamping end in the direct tensile test process of a present incompressible material, can reliably realize the direct tensile test of the incompressible material to accurately obtain the mechanical property parameters of the material, and has a certain application prospect.

Description

technical field [0001] The invention belongs to the technical field of building material testing devices, and in particular relates to reliable clamping and loading of specimens during direct tension tests of incompressible materials. Background technique [0002] The existing material tensile test device - universal testing machine, the clip body is generally made of high-quality medium carbon steel, alloy structural steel, or its mechanical properties can be improved by appropriate heat treatment process. The clamping methods of the fixture mainly include wedge type, pair clamp type, bolt type and so on. [0003] The advantages of these fixtures are: [0004] 1. Reliable clamping, no slippage; [0005] 2. The tolerable test force is relatively large. [0006] However, when it is used for incompressible materials, there are some problems in the above-mentioned conventional clamping method: because the incompressible material is directly clamped due to large deformation, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N3/04
Inventor 陈素文孙飞飞戎文杰丁瑞吴西强
Owner TONGJI UNIV
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