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Sensor based real-time crack monitoring system and monitoring method thereof

A real-time monitoring system and sensor technology, which is applied in the direction of instruments, measuring devices, scientific instruments, etc., can solve the problem of uneven brittleness between the driving layer and the substrate, and achieve immunity from electromagnetic interference, broaden the application range, good stability and reliability effect

Inactive Publication Date: 2016-09-21
BEIHANG UNIV
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Problems solved by technology

When the smart coating cloth is pasted on different substrates, the brittleness of the driving layer and the substrate is uneven, which makes it impossible for the smart coating to have good applicability on all materials
Judging from the physical mechanism that causes the false alarm of the intelligent layer, this problem cannot be solved fundamentally

Method used

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  • Sensor based real-time crack monitoring system and monitoring method thereof
  • Sensor based real-time crack monitoring system and monitoring method thereof

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Embodiment Construction

[0024] The specific embodiment of the present invention will be described with reference to the accompanying drawings.

[0025] Specific process such as figure 2 Shown:

[0026] The first step is to reasonably distribute the smart coating sensor and the Bragg grating sensor on the structure that needs to detect cracks;

[0027] The force analysis of the structure to be tested is carried out to simulate the stress of each part of the structure under working conditions, and the Bragg grating sensors and intelligent coating sensors are reasonably arranged in areas where cracks are prone to occur.

[0028] The second step is to build the hardware systems corresponding to the Bragg grating sensor and the smart coating sensor on the basis of the above, and combine the hardware systems;

[0029] The Bragg grating sensor hardware system includes an optical path composed of broadband light source, F-P cavity and other optical devices, and the intelligent coating sensor hardware syst...

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Abstract

The invention belongs to the technical field of structural health monitoring, and particularly provides a sensor based real-time crack monitoring system and a monitoring method thereof. The sensor based real-time crack monitoring system comprises a Bragg grating sensor hardware system, an intelligent coating sensor hardware system, a data collecting and processing platform and a data storage and pre-warning system. Two crack monitoring methods based on a Bragg grating sensor and an intelligent coating sensor are combined for real-time monitoring of cracks, so that the monitoring precision is improved, and the probability of mistaken alarm is reduced.

Description

technical field [0001] The invention belongs to the technical field of structural health monitoring, in particular to a sensor-based real-time crack monitoring system and a monitoring method thereof. Background technique [0002] With the gradual popularization of mechanization in various industries, structural life and reliability analysis has become an urgent problem to be solved. Among them, the detection of structural cracks has become an important aspect of structural life assessment. Cracks are one of the typical damage types in structures. Cracks will inevitably occur in important structures during the expected or extra service life. If the initiation and expansion of these cracks cannot be monitored timely and accurately, it may lead to major accidents. Therefore, real-time monitoring of cracks is very important for improving structural safety. Critical. [0003] Structural health monitoring technology is an intelligent structural monitoring method. Through the in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/88G01N27/00G01N27/04
CPCG01N21/88G01N27/00G01N27/041
Inventor 李英武张卫方金博任飞飞张萌王邓江刘晓鹏
Owner BEIHANG UNIV
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