Carbon fiber multifilament and fixture auxiliary tool for carbon fiber cable tensile testing

Abstract

The invention relates to a carbon fiber multifilament and a fixture auxiliary tool for carbon fiber cable tensile testing, and provides a carbon fiber multifilament and a fixture auxiliary tool for carbon fiber cable tensile testing; the tool comprises two same main bodies as a group; the two same main bodies are respectively disposed in an upper and a lower chucks of the fixture; the main body comprises a connecting rod; a chuck is fixed at one end of the connecting rod, and a screw is fixed at the other end; a groove chuck is fixed near the screw on the connecting rod; a fastening block is disposed on the screw; the fastening block is tightly compressed by a nut on the screw; the heights of the chuck and the groove chuck are greater than the diameter of the connecting rod. The inventioncan realize the completion of tensile testing of a carbon fiber cable which is not dipped with resin, omits the procedures of glue preparation, glue dipping, or solidification, not only prevent the fixture from contacting the carbon fiber and thus prevent the damage of the carbon fiber, but also prevent the slipping of the carbon fiber from the fixture, and ensures that the carbon fiber cable fractures at a position far from the fixture.

Description

technical field [0001] The invention belongs to the technical field of fiber material testing, in particular to a fixture auxiliary tool for tensile testing of carbon fiber multifilament and carbon fiber cables. Background technique [0002] Carbon fiber is a high-strength and high-modulus brittle material. At present, its strength test refers to GB / T 3362-2005 carbon fiber multifilament tensile performance test method, and the pretreatment is carried out by dipping method. Foreign standards such as Japanese standard JIS K7073-1988 also adopt similar methods. However, after the carbon fiber cable is dipped in glue, the surface of the prepared sample is not smooth, and there are glue beads and holes, forming defective parts, which may easily cause the failure of the tensile test. [0003] In addition, the end of the carbon fiber cable is easily broken in the clamp after dipping, so it must be strengthened here. The reinforcement sheet at the head end of the sample at home a...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a carbon fiber multifilament and carbon fiber cable tensile test fixture auxiliary tool to solve the problem that the fixture damages the sample and the sample slips in the fixture

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