Research on a Novel Low Modulus OFBG Strain Sensor for Pavement Monitoring

Sensors

Chuan Wang¹  Qingli Hu² 

[1] School of Civil Engineering, Harbin Institute of Technology, Harbin 150090, China;

关键词: OFBG;    strain measuring;    low modulus;    asphalt concrete;   

DOI  :  10.3390/s120810001

来源: mdpi

【 摘 要 】

Because of the fatigue and deflection damage of asphalt pavement, it is very important for researchers to monitor the strain response of asphalt layers in service under vehicle loads, so in this paper a novel polypropylene based OFBG (Optical Fiber Bragg Gratings) strain sensor with low modulus and large strain sensing scale was designed and fabricated. PP with MA-G-PP is used to package OFBG. The fabrication techniques, the physical properties and the sensing properties were tested. The experimental results show that this kind of new OFBG strain sensor is a wonderful sensor with low modulus (about 1 GPa) and good sensitivity, which would meet the needs for monitoring some low modulus materials or structures.

【 授权许可】

CC BY   
© 2012 by the authors; licensee MDPI, Basel, Switzerland.