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Method and device for microwave non-destructive testing, rapid repair and real-time monitoring of composite materials

A composite material and non-destructive testing technology, applied in the direction of measuring devices, analyzing materials, and using microwave means for material analysis, etc., can solve problems such as uneven temperature field distribution and inability to control repair quality in real time, so as to improve repair speed and repair quality , light weight, good repair quality effect

Active Publication Date: 2018-04-20
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to invent a highly integrated system that includes non-destructive testing, rapid curing, and on-line monitoring of the curing state of the material in order to solve the problem that the inspection and repair of the existing composite components are carried out separately and the repair quality cannot be controlled in real time during the repair process. A method for microwave non-destructive testing, rapid repair and real-time monitoring of composite materials with other functions, and a corresponding device is provided at the same time
During the curing process, according to the temperature change of the material and the change of the curing degree during the curing process, the output power and frequency of the microwave source are intelligently controlled, which efficiently solves the problem of uneven distribution of the temperature field when the microwave is heating the material, and improves the compounding efficiency. Material repair speed and repair quality

Method used

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  • Method and device for microwave non-destructive testing, rapid repair and real-time monitoring of composite materials
  • Method and device for microwave non-destructive testing, rapid repair and real-time monitoring of composite materials

Examples

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Effect test

Embodiment 1

[0034] Such as Figure 1-2 shown.

[0035] A method for microwave non-destructive testing, rapid repair and real-time monitoring of composite materials. First, use the same microwave source and transceiver antenna to realize microwave non-destructive testing of damaged areas of composite materials; secondly, start microwave heating to cure the area to be repaired according to the test results; third Monitor the curing state of the composite material while curing and repairing, and adjust the repairing process in real time; wherein, detection, monitoring and repairing can be performed simultaneously, step by step or separately. The frequency of microwave detection, repair and monitoring is between 300MHz and 300GHz, preferably between 2GHz and 8GHz. Such as figure 1 As shown, the microwave source generates microwave under the control of the microwave controller and passes through the transmission line, and the microwave is radiated by the hemispherical transceiver to directly...

Embodiment 2

[0045] Such as Figure 1-2 shown.

[0046] An integrated device for microwave non-destructive testing, rapid repair and real-time monitoring of composite materials, which includes a microwave controller 1, a microwave source 2, a microwave switcher 3, an active amplifier 4, a hemispherical transceiver 5, a microwave transceiver antenna 6, a signal Modulator 8 (using fiber optic signal modulator) and temperature sensor 11 (using fiber grating temperature sensor), such as figure 1 As shown, the microwave controller 1 controls the microwave source 2 to generate microwaves and transmits them to the microwave transceiver antenna 6 in the hemispherical transceiver 5 through the transmission line 9 to radiate microwaves to directly detect the components of the composite material 12 that need to be inspected and repaired, or through the microwave switcher 3 Switch to the active amplifier 4 to amplify, and quickly repair the composite material heating and curing area 7 through the mul...

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Abstract

The invention relates to a method and device for microwave nondestructive testing, quick repairing and real-time monitoring of a composite material. The method includes the steps that the damaged part of the composite material is subjected to microwave nondestructive testing first; and then a to-be-repaired region is solidified through microwave heating, the solidification state of the composite material is monitored while solidification, and the repair technology is adjusted in real time. Due to the fact that a microwave generation source is adopted in the device, microwave nondestructive testing can be conducted on the composite material, and microwave fast repairing and solidification monitoring can also be conducted on the composite material. By the adoption of the method and device, microwave nondestructive testing, quick repairing and solidification monitoring can be carried out synchronously, hence, the repairing speed of the composite material is obviously increased, the repairing quality of the composite material is obviously improved, and repairing cost is lowered.

Description

technical field [0001] The present invention relates to a composite material component non-destructive testing, rapid repair and on-line monitoring technology of curing process, especially an integrated detection and repair technology, specifically a composite material microwave non-destructive testing, rapid repair and real-time monitoring method and device. Background technique [0002] At present, with the further improvement of the lightweight requirements of aircraft, the use of composite materials in aircraft structural parts gradually exceeds that of metal materials. However, when aircraft composite components are subjected to external effects such as severe impact, vibration, lightning strike, bird strike, ablation, etc., they are prone to damage, fatigue fracture, delamination and degumming. Most of these damages need to be repaired during the use of the aircraft. Inspection and repair. The traditional field repair of aircraft composite components adopts the hot p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C73/34G01N22/00G01R27/26
CPCB29C73/34G01N22/00G01R27/2617
Inventor 李迎光李楠垭
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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