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An ultrasonic phased array online testing method for the internal quality of thin-walled CFRP pipe fittings

An ultrasonic phased array, on-line testing technology, applied in the analysis of solids using sonic/ultrasonic/infrasonic waves, material analysis using sonic/ultrasonic/infrasonic waves, measurement devices, etc., to improve detection accuracy, avoid adverse effects, and improve detection efficiency Effect

Active Publication Date: 2019-07-12
BEIJING SATELLITE MFG FACTORY
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  • Claims
  • Application Information

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Problems solved by technology

[0004] The technical problem of the present invention is: to overcome the deficiencies of the prior art, and propose an ultrasonic phased array online testing method for the internal quality of thin-walled CFRP pipe fittings, which solves the problem of the existing carbon fiber reinforced resin matrix composite material internal quality performance testing method. It is applicable to the problem of online non-destructive testing of thin-walled CFRP pipe fittings, and provides a new test method for online testing of carbon fiber thin-walled CFRP pipe fittings. Using this method can reliably reflect the actual internal quality performance of carbon fiber reinforced resin matrix composite pipes

Method used

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  • An ultrasonic phased array online testing method for the internal quality of thin-walled CFRP pipe fittings
  • An ultrasonic phased array online testing method for the internal quality of thin-walled CFRP pipe fittings
  • An ultrasonic phased array online testing method for the internal quality of thin-walled CFRP pipe fittings

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Embodiment

[0062] The seven-layer wound loop antenna structure with an outer wall diameter of 26 mm and a wall thickness of 0.6 mm was tested with a thin-walled CFRP pipe for ultrasonic phased array testing. It is required that there are no defects larger than 0.5mm equivalent in CFRP pipe fittings. The steps of the method include:

[0063] (1) Prepare standard comparison specimens of CFRP pipe fittings with defects;

[0064] The preparation method is: in the process of preparing CFRP thin-walled pipe fittings by winding method, place two single layers with sizes of Φ3mm, Φ5mm, and Φ7mm and a thickness of 0.02mm between the sixth and seventh layers of CFRP PTFE film, the function of placing the PTFE film is to isolate CFRP, and the position where the PTFE film is placed is the defect position, such as figure 1 shown;

[0065] (2) carry out ultrasonic phased array test to the standard comparative specimen prepared in step (1);

[0066] The ultrasonic phased array test method is as fol...

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Abstract

The invention relates to an ultrasound phased array online testing method for internal quality of a thin-walled CFRP (carbon fiber reinforced resin matrix composite) pipe fitting and belongs to the technical field of ultrasound phased array online testing for internal quality of the thin-walled CFRP. The method is applicable to nondestructive testing experiments for measuring internal quality of the CFRP pipe fitting with wall diameter range being 20-30 mm and wall thickness range being 0.6-1.5 mm, that is, the outer diameter of the thin-walled CFRP pipe fitting is 20-30 mm and the wall thickness is 0.6-1.5 mm. The testing method is mainly used for testing defect types such as internal delamination, hollowing and loosening and the like of the thin-walled CFRP pipe fitting.

Description

technical field [0001] The invention relates to an ultrasonic phased array online testing method for the internal quality of a thin-walled fiber-reinforced resin-based composite material (CFRP) pipe fitting, belonging to the technical field of ultrasonic phased array online testing for the internal quality of a fiber-reinforced resin-based composite material, and is suitable for measuring the pipe wall The internal quality non-destructive test test of CFRP pipe fittings with a diameter range of 20-30mm and a wall thickness range of 0.6-1.5mm, that is, the outer diameter of the thin-walled CFRP pipe fittings is 20-30mm, and the wall thickness is 0.6-1.5mm. The method is mainly used to test the types of defects such as internal delamination, voids, and looseness of thin-walled CFRP pipe fittings. Background technique [0002] CFRP thin-walled pipe fitting structure is a typical unit of composite material components, and is a commonly used structural component in aviation and s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N29/06G01N29/04G01N29/24
CPCG01N29/043G01N29/048G01N29/0654G01N29/24G01N2291/0231G01N2291/0289G01N2291/2634G01N2291/2636
Inventor 徐丽霞周双锋杨耀东刘慧高静
Owner BEIJING SATELLITE MFG FACTORY
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