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A method for measuring the bonding properties of "cfrp-glue-line-steel"

A technology of bonding performance and measurement method, which is applied in the direction of measuring devices, instruments, and mechanical devices, etc., can solve the problems such as difficult to test the bonding performance of "CFRP-adhesive layer-steel", achieve fast measurement speed, less capital, The effect of the clear measurement principle

Inactive Publication Date: 2017-12-29
WUHAN UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a fast and low-cost "CFRP-adhesive-steel" bond for the defect that it is difficult to test the bonding performance of "CFRP-adhesive-steel" in the prior art Performance Measures

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  • A method for measuring the bonding properties of "cfrp-glue-line-steel"
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  • A method for measuring the bonding properties of "cfrp-glue-line-steel"

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Embodiment Construction

[0024] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0025] Such as figure 1 Shown, the measurement method of " CFRP-adhesive layer-steel " bonding performance of the embodiment of the present invention, comprises the following steps:

[0026] S1. According to the measurement needs, select the corresponding CFRP probe and steel probe, and install them on the handle of the ultimate bond stress measurement device, and apply an adhesive layer between the two probes to form a "CFRP-adhesive layer-steel "Adhesive interface;

[0027] S2. Start the limit bond stress measurement device, the tension slider slides at a low speed, the spring is stretched to m...

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Abstract

The invention discloses a measuring method of a CFRP, adhesive layer and steel adhering property, which comprises the following steps: S1, selecting a corresponding CFRP measuring head and a corresponding steel measuring head, and mounting the same on a measuring handle of an extreme adhering stress measuring device, and smearing an adhesive layer between the two measuring heads to form a CFRP, adhesive layer and steel adhering interface; S2, starting the extreme adhering stress measuring device, gradually enlarging a spring tension till the CFRP, adhesive layer and steel adhering interface is damaged, measuring a distance between a moving measuring handle and a tension sliding block in real time, and drawing a length and time relation curve; S3, obtaining a sudden change dot of the length and time relation curve and calculating an extreme adhering stress according to an original length of a spring and a spring length corresponding to the sudden change dot. The method is clear in principle and fast in measuring speed, the used device is simple in structure and low in cost, is convenient for a laboratory to obtain by less money, and tests by large scale complex equipment such as a fatigue machine is not needed.

Description

technical field [0001] The invention relates to the field of steel structure reinforced by carbon fiber composite materials, in particular to a method for measuring the bond performance of "CFRP-adhesive layer-steel". Background technique [0002] CFRP (carbon fiber composite material) has the advantages of high strength, light weight, corrosion resistance, and good durability. It has been gradually applied to the field of steel structure reinforcement in recent years. CFRP reinforced steel structure is to paste CFRP material on the surface of the weak part of the steel structure, and through the bonding effect of the adhesive layer, a part of the load is transferred to the CFRP, thereby improving the stress state at the paste and achieving the purpose of repair and reinforcement. [0003] From the technological characteristics of CFRP reinforced steel structures, it can be seen that the mechanically weak link after strengthening is the "CFRP-adhesive layer-steel" bonding in...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N19/04
CPCG01N19/04
Inventor 刘志平柯亮陈凯陈山何超超
Owner WUHAN UNIV OF TECH
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