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Vol. 22, Special Issue, June 2013, pp. 74-80

 

Bullet

 

Experimental Study on the Corrosion of Buried Directly Heating Supply Pipeline Based on the BOTDA (R) Technique
 
LI Xiang-Li, ZHAO Xue-Feng, LU Xingjun

School of Civil Engineering, Dalian University of Technology, No.2 Linggong Road Gaoxin Distric, Dalian, 116024, China

Tel.: +86-411-8470-7684, fax: +86-411-84674141

E-mail: lxl@dlut.edu.cn

 

Received: 15 April 2013   /Accepted: 20 June 2013   /Published: 28 June 2013

Digital Sensors and Sensor Sysstems

 

Abstract: A novel Brillouin Optical Time Domain Analysis sensors, BOTDA(R), has been developed, which can monitor steel corrosion in concrete structures and various insulation structures. The application of distributed BOTDA(R) technology in heating supply pipe corrosion detection is discussed in this paper. According to the characteristics of derictly buried heating supply pipe, we have designed the optical fiber corrosion sensors for the prefabricated pipe, and the sensors were arranged in the junction of pipe section. Accelerated corrosion tests were used to demo the acid soil environment. Quantitative evaluation was derived formula for steel pipe corrosion.

 

Keywords: Prefabricated derictly heating supply pipe, Brillouin optical time domain analysis, Brillouin optical fiber sensing technology, Online detection, Sensor, Corrosion.

 

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