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Updated: May 17, 2026

Production of a Strain-Measuring Device with an Improved 3D Printer
Published on: January 30, 2020
Research on a novel low modulus OFBG strain sensor for pavement monitoring
Chuan Wang1, Qingli Hu, Qiyu Lu
1School of Civil Engineering, Harbin Institute of Technology, Harbin 150090, China. wangchuan@hit.edu.cn
Abstract:
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.
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