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A shear test fixture

A shear test and fixture technology, used in measuring devices, instruments, scientific instruments, etc., can solve the problems of non-pure shear failure, easy to shake, complex shape, etc., and achieve the effect of ensuring slippage and increasing versatility

Active Publication Date: 2017-07-04
BAIMTEC MATERIAL CO LTD
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

[0002] When using a universal testing machine to test the interlaminar shear strength of materials (such as fiber-reinforced plastics, plexiglass, etc.) and the bond strength of the bonded surface of the board, "Z-type" and "T-type" shear specimens are usually used. Due to the complex shape of the sample and the various thicknesses and dimensions of the material to be tested, the general shear test fixture can only test samples of a single shape and thickness, which is difficult to meet the requirements of sample form changes
In addition, in the shear test process, the specimens using traditional fixtures are usually simply supported or fixed, which is prone to shaking, which may cause non-pure shear damage and affect the accuracy of test results

Method used

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Embodiment Construction

[0018] The technical scheme of the present invention will be described in further detail below in conjunction with accompanying drawing and embodiment:

[0019] See attached Figure 1~5 As shown, this kind of shear test fixture is characterized in that: the fixture includes a base platform 2, and a concave cavity 13 is processed in the middle part of the base platform 2, and the bottom of the cavity 13 is placed two for The lower slider 5 and the positioning slider 7 for clamping the sample are respectively pushed by the first positioning rod 4 and the second positioning rod 6, and the first positioning rod 4 and the second positioning rod 6 Respectively pass through the holes 15 on the two end faces 14 of the cavity 13, the holes 15 are threaded holes, the first positioning rod 4 and the second positioning rod 6 are threaded rods, and the two are rotated by threaded connection, the upper part of the lower slider 5 A fixed block 3 fixedly connected to the base platform 2 is p...

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Abstract

The invention discloses a shear test fixture. The shear test fixture can simultaneously satisfy the use of shear strength tests on Z-shaped and T-shaped samples. By using the flexible adjustment of a lower slide block selecting gaskets with different thicknesses, the fixture can be applied to samples with different thicknesses, thereby increasing the versatility of samples; and due to the addition of a fore applied spring and a positioning slide block, the force exerted on a sample in a clamped state can be adjusted, so that the elastic clamping of the sample is realized, therefore, the fixture has the advantages of ensuring that the sample does not slide in the process of testing, and the like.

Description

technical field [0001] The invention relates to a shear test fixture, which relates to the technical field of material shear strength detection, and is a compression shearing fixture for T-shaped shear samples and "Z-shaped" and "T-shaped" samples of different thicknesses. Test fixture. Background technique [0002] When using a universal testing machine to test the interlaminar shear strength of materials (such as fiber-reinforced plastics, plexiglass, etc.) and the bond strength of the bonded surface of the board, "Z-type" and "T-type" shear specimens are usually used. Due to the complex shape of the sample and the various thicknesses and sizes of the materials to be tested, the general shear test fixture can only test samples of a single shape and thickness, which is difficult to meet the requirements of sample form changes. In addition, in the process of shear testing, the samples using traditional fixtures are usually simply supported or fixed, which is prone to shakin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N3/04
Inventor 厉蕾郭世毅陈洁聂磊丁宇婷
Owner BAIMTEC MATERIAL CO LTD
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