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Three-dimensional textile composite material stretching and compressing sample preparation device and method

A technology for sample preparation and composite materials, which is applied in the preparation of test samples and the application of stable tension/pressure to test the strength of materials, etc. Problems such as poor applicability of materials and high dependence on reinforcing sheets can achieve the effect of increasing the uniformity of structural adhesive distribution, guaranteeing discreteness and authenticity, and ensuring stability and consistency

Active Publication Date: 2020-12-11
NANJING FIBERGLASS RES & DESIGN INST CO LTD
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Problems solved by technology

[0006] Commonly used reinforcing sheet pasting tooling is often designed for specific types and sizes of samples, which is not suitable for three-dimensional woven composite materials. Difficult, it is difficult to ensure the stability and consistency of the paste quality of the sample reinforcement sheet

Method used

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  • Three-dimensional textile composite material stretching and compressing sample preparation device and method
  • Three-dimensional textile composite material stretching and compressing sample preparation device and method
  • Three-dimensional textile composite material stretching and compressing sample preparation device and method

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Embodiment Construction

[0042] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0043] In this embodiment, a device and method for preparing tensile and compression samples of three-dimensional textile composite materials is proposed. Arm 2, two intermediate positioning sliding arms 3, four positioning sliders 4, four scale lines 5, and bolts, nuts, washers for mechanical connection, such as figure 1 shown;

[0044] The two vertical chute arms 1 are parallel to each other, located on both sides of the tooling, and are machined with scale lines, such as Figure 5 shown;

[0045] The two ends of the positioning sliding arm 2 are L-shaped, such as Figure 6As shown, parallel to each other, the first end positioning sliding arm 2 and the aforementioned two vertical chute arms 1 are completely vertically fixed by bolts and other mechanical connection methods, as a positioning reference, the second end positioning sliding arm 2 is connect...

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Abstract

The invention discloses a three-dimensional textile composite material stretching and compressing sample preparation device and method. The sample preparation method is different from a conventional composite material sample preparation method, and based on the specific unit cell attribute of a composite material, the geometric dimension parameters of a stretching and compressing sample and a reinforcing sheet can be changed. According to the preparation method, the universality of a tool can be improved, the tool cost is reduced, the parallelism and perpendicularity of sample manufacturing are guaranteed, the structural adhesive distribution uniformity between the reinforcing sheet and the sample body is improved, the dependence degree of the bonding quality of the reinforcing sheet on operators is reduced, the stability and consistency of the bonding quality of the sample and the reinforcing sheet are guaranteed, and a guarantee is provided for reliability, discreteness and authenticity of test data.

Description

technical field [0001] The invention belongs to the technical field of composite material sample preparation, in particular to a three-dimensional textile composite material tensile and compression sample preparation device and method. Background technique [0002] As we all know, when composite materials are tested in tension and compression, the end of the sample needs to be pasted with a reinforcing sheet as a clamping area, which is in direct contact with the fixture to protect the sample body and prevent the fixture from causing damage to the sample body, resulting in premature failure. Occurs, no scientific and rigorous experimental data can be obtained. In the past, when pasting the reinforcement sheet, the composite material plate was often cut to the required sample size according to the geometric size design of the sample, and then the reinforcement sheet was pasted on the sample by scribing to determine the sticking position, and then the structural glue was appli...

Claims

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Application Information

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IPC IPC(8): G01N1/28G01N3/08
CPCG01N1/28G01N3/08Y02T50/40
Inventor 黄建王昆王克周海丽李超张立泉
Owner NANJING FIBERGLASS RES & DESIGN INST CO LTD
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