Large range reinforcing steel corrosion monitoring sensor based on fiber bragg grating sensing technology

Abstract

The invention discloses a large range reinforcing steel corrosion monitoring sensor based on fiber bragg grating sensing technology. The sensor comprises a sector which is formed by an inner layer fan-shaped backing plate and an outer layer fan-shaped backing plate and is perpendicular to the axis of a reinforcing steel to be detected, a fiber with at least one section of sensitive grating and an elastic plastic shell. The plastic shell is arranged at two outer sides of the sector which is formed by an inner layer fan-shaped backing plate and an outer layer fan-shaped backing plate. A fiber micro grating type reinforcing steel corrosion stress sensor of the invention has long-term stability in a marine corrosion environment, the size of the corrosion expansion stress of a detected reinforcing steel and the time process of concrete member cracking are monitored in the condition that a chlorine ion penetration effect is not affected, a defect that the early reinforcing steel corrosion can not be monitored and the corrosion expansion stress can not be measured in the prior art is overcome, an objective basis and detailed data are provided for scientific research and daily maintenance decision, the remote monitoring can be realized, the precision is high, and the reliability is good.

Description

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AI Technical Summary

Benefits of technology

This patented device uses an optically active material called Optical Grille Network (OGS) sensors made up from fibers attached at specific points on their surface. These OGs have unique properties such as flexibility or ability to absorb water vapor effectively. When exposed to sea environments where salt concentration increases due to seawater exposure, these devices expand by absorbing moisture and creating space between them. By measuring this change caused by environmental factors like temperature and pressure, they provide accurate measurements even if there may also damage nearby structures during testing. Overall, this design allows for precise and reliable detection of corrosive phenomena while maintaining its effectiveness across different types of materials used throughout construction projects.

Problems solved by technology

This patented technical problem addressed in this patents relates to finding ways to prevent failure caused by corrosive substances such as salt water ingression into building materials during construction processes.

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