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Method for testing compression performance of carbon-fiber reinforced resin-based thin-wall composite pipe

A technology for reinforcing resin-based and composite materials, which is used in the preparation of test samples and the application of stable tension/pressure to test the strength of materials. The effect of increasing stability, avoiding additional bending moments, and reducing dispersion

Active Publication Date: 2016-02-24
BEIJING SATELLITE MFG FACTORY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method stipulates the way to prepare the test piece, that is, to increase the wall thickness at both ends of the pipe to be tested. However, for the carbon fiber reinforced resin-based thin-walled composite pipe, when the test piece prepared by this method is tested, the pipe wall is thinner. The structural rigidity is poor, and it is prone to instability when loaded, resulting in additional bending moment to the sample, resulting in bending damage of the sample, and it is impossible to truly measure the actual compression performance of the product

Method used

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  • Method for testing compression performance of carbon-fiber reinforced resin-based thin-wall composite pipe
  • Method for testing compression performance of carbon-fiber reinforced resin-based thin-wall composite pipe
  • Method for testing compression performance of carbon-fiber reinforced resin-based thin-wall composite pipe

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Embodiment

[0047] Take the compression performance test of carbon fiber reinforced resin-based thin-walled composite pipe fittings with an inner diameter of Φ24mm and a wall thickness of 0.6mm as an example:

[0048] 1. Use a diamond grinding wheel to cut a length of 230mm from the carbon fiber reinforced resin-based thin-walled composite pipe to be tested as a test. When cutting, select a glass rod with a diameter of Φ24mm and insert it into the carbon fiber-reinforced resin-based thin-walled composite pipe to be tested. , using a diamond grinding wheel to mill the two end faces of the test pipe fittings obtained after interception, to ensure that the parallelism of the two end faces is 0.05mm.

[0049] 2. According to the inner and outer diameters of the test fittings obtained in step 1, one end of the test fittings is used to design and process a metal joint for testing. The metal joint includes an inner sleeve and an outer sleeve, and the inner sleeve is a hollow cylinder. It has a s...

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Abstract

The invention discloses a method for testing the compression performance of a carbon-fiber reinforced resin-based thin-wall composite pipe. A mechanical compression testing piece of the carbon-fiber reinforced resin-based thin-wall composite pipe is prepared with the cementing connection technology. Firstly, the compression testing piece is installed and clamped on a mechanical testing machine; secondly, the compression testing piece is loaded; finally, a breaking load and the corresponding deformation value are obtained. By means of the method, the problem that an existing mechanical performance testing method of a carbon-fiber reinforced resin-based composite pipe material is not suitable for the thin-wall composite pipe is solved, buckling failure of the pipe in the testing process is avoided with a novel compression test piece preparing method, and a new test method is provided for the carbon-fiber thin-wall composite pipe. The practical compression performance of the carbon-fiber reinforced resin-based thin-wall composite pipe can be reliably reflected with the method.

Description

technical field [0001] The invention relates to a method for testing the compression properties of carbon fiber reinforced resin-based composite material pipe fittings, which is suitable for measuring carbon fiber reinforced composite pipes with a wall thickness less than 1.5mm (nominal diameter less than 50mm) and a ratio of diameter to wall thickness greater than 50 (nominal diameter is 50mm-100mm). The invention relates to the mechanical properties of thin-walled pipe fittings made of resin-based composite materials, and belongs to the field of structural performance testing of carbon fiber-reinforced resin-based composite materials. Background technique [0002] Carbon fiber reinforced resin matrix composite material rod and tube structure is a typical unit of composite material components. It is a commonly used structural component in aviation and spacecraft structures. Most large satellite antenna brackets use carbon fiber reinforced resin matrix composite material pipe...

Claims

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Application Information

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IPC IPC(8): G01N3/08G01N1/28
CPCG01N1/28G01N3/08
Inventor 王洋董丰路陈维强朱大雷
Owner BEIJING SATELLITE MFG FACTORY
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