Journal
SENSORS
Volume 12, Issue 8, Pages 10001-10013Publisher
MDPI
DOI: 10.3390/s120810001
Keywords
OFBG; strain measuring; low modulus; asphalt concrete
Funding
- National Natural Science Foundation of China [51008092]
- Fundamental Research Funds for the Central Universities [HIT.NSRIF. 201196]
- Key Projects in the National Science & Technology Pillar Program [2011BAK02B00]
- China Postdoctoral Science Foundation [20110491081]
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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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