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Intelligent structure self-healing method and health monitoring system based on light repairing technology

A technology of intelligent structure and photoremediation, which is applied in chemical instruments and methods, optical testing of defects/defects, and other chemical processes, can solve the problems of low catalyst use efficiency and achieve structural integration, strong practicability, and low cost Effect

Inactive Publication Date: 2009-09-30
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, the use efficiency of the catalyst is very low, and a large catalyst concentration also has a certain influence on the performance of the smart composite material

Method used

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  • Intelligent structure self-healing method and health monitoring system based on light repairing technology
  • Intelligent structure self-healing method and health monitoring system based on light repairing technology
  • Intelligent structure self-healing method and health monitoring system based on light repairing technology

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Embodiment 1

[0039] Example 1: figure 1 A schematic embodiment of an intelligent structure self-healing method and a health monitoring system of the present invention is given. Such as figure 1 As shown: the present invention includes: a light source (1), an optical fiber sensing network module (2), a repairing reinforcement fiber (3), a signal transmission and processing module (4) and a damage location module (5).

[0040] Among them, the repairing reinforcing fiber (3) includes: fiber coating (301) and photocuring repairing agent (302); the signal transmission and processing module (4) includes: photoelectric conversion and amplification (401), analog-to-digital conversion (402), signal Processing (403) and data communication (404).

Embodiment 2

[0041] Example 2: figure 2 , 3, 6, 7 give an example of self-healing of a schematic smart structure of the present invention.

[0042] In the embodiment, the epoxy acrylate prepolymer (the Viscosity: 6800mPa s (25°C)), as the base material of photocuring repair agent ( figure 2 Figure of the experimental setup prepared for the prepolymer); with photoinitiator 1173 (2-hydroxy-2-methyl-1-phenylacetone) and TPO (two 2,4,6-trimethylbenzoyl diphenyl base phosphine oxide) according to the mass ratio of 1:1 preparation composite photoinitiation system ( image 3 is the absorption spectrum of the composite photoinitiator, the abscissa is the wavelength, and the ordinate is the absorbance); with prepolymer (epoxy acrylate), reactive diluent (methyl methacrylate) and photoinitiator (prepared by 1173 and TPO Composite photoinitiator) according to the mass percentage of 15:4:1 preparation photocuring restoration agent, the prepared photocuring restoration agent has a viscosity of 598...

Embodiment 3

[0044] Example 3: Figure 4 , 5 gives an embodiment of a specific intelligent structure sensing, signal transmission and processing module of the present invention.

[0045] In the example, Figure 4 In order to adhere to the optical fiber sensor network module on the surface of the intelligent composite structure according to the orthogonal distribution (in the figure: X1~X8 respectively represent 8 sensing fibers in the orthogonal distribution, and the sensor network includes 16 sensing areas), use Sensing and transmitting deformation and damage information of structures;

[0046] Figure 5 The signal transmission and processing module (4) includes: photoelectric conversion and amplification (401), analog-to-digital conversion (402), signal processing (403) and data communication (404). Photoelectric conversion and amplification (401) uses a phototransistor L-31ROPT1D2 (Q1) without a base lead, an adjustable resistor (R1=28KΩ) and a current limiting resistor (R2=20kΩ) to ...

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Abstract

The invention relates to an intelligent structure self-healing method and a health monitoring system, in particular to a brand-new intelligent structure self-healing and self-diagnostic method which utilizes solar energy and light-curing technology to realize damage self-healing of composite material and simultaneously realizes health monitoring on the basis of neural network and digital signal processing technologies. In the method, light-curing plasteringagent is taken as light-curing restoration agent and is arranged in tubular fibre coated with photomask agent and coupling agent; when material cracks, fibres at the front expansion edge of the crack rupture, and the light-curing restoration agent permeate into the damaged cracks and adopt sunlight as supply power resource to realize the self-healing of the damaged material; at the meantime, an optical fibre sensor used as a signalling and sensing element and a digital signal processing technology are combined to realize the status health monitor of the intelligent structure. The invention has the characteristics of strong practicality, low cost, environment protection, energy saving, and the like, and provides an effective solution for realizing the self-healing and the health monitor of composite material components.

Description

technical field [0001] A new type of intelligent structure self-healing method and health monitoring system based on photoremediation technology described in the present invention, combined with photocuring technology, optical fiber sensing technology, composite material structural mechanics and digital signal processing technologies, utilizes sunlight energy The self-healing of composite materials is realized, and the health monitoring of composite material structures is realized by combining neural network and digital signal processing technology, which belongs to a new intelligent structure self-repair and self-diagnosis. In particular, the material self-healing solution proposed by the present invention, which uses sunlight as energy supply and photocuring repair agent as material supply, provides a more practical, low-cost, environmentally friendly and energy-saving effective solution for the safer and wider use of composite material components. way. Background techniqu...

Claims

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Application Information

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IPC IPC(8): B29C73/22C09K3/10C09J163/10G01N21/88
Inventor 赵志敏李鹏俞晓磊洪小芹陈玉明
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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