FRP (fiber reinforced plastic) lossless multi-electrode sensing structure for intelligent tensioning and CFRP (carbon fiber reinforced plastic) rib manufacturing method

An intelligent tensioning and multi-electrode technology is applied in the direction of material analysis, measuring devices, and instruments through electromagnetic means, which can solve problems that have not been effectively solved, and achieve the effects of easy implementation, accurate real-time monitoring, and simple structure

Pending Publication Date: 2018-08-10
THE FOURTH ENG CO LTD OF CTCE GRP +1
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

However, if it is designed as a multi-electrode, generally more cross-sections are required for setting electrodes; however, for components using continuous fibers (take CFRP as an example), how to set up multi-electrodes without weakening the bearing capacity of continuous fibers has always been a challenge. not effectively resolved

Method used

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  • FRP (fiber reinforced plastic) lossless multi-electrode sensing structure for intelligent tensioning and CFRP (carbon fiber reinforced plastic) rib manufacturing method
  • FRP (fiber reinforced plastic) lossless multi-electrode sensing structure for intelligent tensioning and CFRP (carbon fiber reinforced plastic) rib manufacturing method
  • FRP (fiber reinforced plastic) lossless multi-electrode sensing structure for intelligent tensioning and CFRP (carbon fiber reinforced plastic) rib manufacturing method

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Experimental program
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Effect test

Embodiment Construction

[0025] see figure 1 and figure 2 , the FRP non-destructive multi-electrode sensing structure used for intelligent tensioning in this embodiment is:

[0026] Each electrode is set in the CFRP tendon, including terminal electrodes and internal electrodes, and the terminal electrodes are the first electrodes 11 and the second electrodes 12 at the left and right ends of the CFRP tendons; the internal electrodes are arranged inside the CFRP tendons, And the third electrode 13 and the fourth electrode 14 at different axial positions are in one-to-one correspondence.

[0027] The detection circuit is set by connecting the constant current power supply 5 between the first electrode 11 and the second electrode 12, and setting the ammeter 3 in series in the current output circuit of the constant current power supply 5; between the third electrode 13 and the fourth electrode 14 A voltage detection circuit is set between them, and a voltmeter 4 is set in the voltage detection circuit; ...

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Abstract

The invention discloses an FRP (fiber reinforced plastic) lossless multi-electrode sensing structure for intelligent tensioning and a CFRP (carbon fiber reinforced plastic) rib manufacturing method. The structure is characterized in that electrodes including two terminal electrodes and two inner electrodes and a detection circuit are arranged in a CFRP rib, a constant-current power supply is connected between the two terminal electrodes, and an ampere meter is serially connected in a current output circuit of the constant-current power supply. A voltmeter is arranged in a voltage detection circuit which is arranged between the two inner electrodes. When a body resistance change value resulted from axial deformation of the CFRP rib is obtained by calculation according to detection signals of the detection circuit when the CFRP rib is under an axial force, a stress state of the CFRP rib is judged, and real-time monitoring aiming at the stress state of the CFRP rib is realized.

Description

technical field [0001] The invention relates to a multi-electrode sensor structure for indicating material resistance and its resistance change value, in particular to a sensor and a CFRP tendon for accurately identifying the resistance value and resistance value change of an FRP conductive composite material so as to monitor the stress on the material A method of fabrication for implementing structural monitoring. Background technique [0002] At present, for conductive composite materials with low conductivity, the DC two-terminal electrode method is generally used for resistance testing. Although there is a contact resistance between the electrode and the conductive composite material during the test, its influence is small. However, for conductive composite materials with medium or high conductivity, the electrode contact resistance in the two-terminal electrode method has a significant impact on its conductivity test value. In order to eliminate the influence of the co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/04
CPCG01N27/041
Inventor 毕文文夏文明张赫陈平黄景新刘冯吴晓锋邹文尹标宋宝吉刘荣桂延永东李十泉
Owner THE FOURTH ENG CO LTD OF CTCE GRP
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