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Research on a novel low modulus OFBG strain sensor for pavement monitoring.

Wang C, Hu Q, Lu Q - Sensors (Basel) (2012)

Bottom Line: 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.

View Article: PubMed Central - PubMed

Affiliation: School 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.

No MeSH data available.


Related in: MedlinePlus

Test of asphalt concrete beam.
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f15-sensors-12-10001: Test of asphalt concrete beam.

Mentions: Steel dies with inner size of 100 mm × 100 mm × 400 mm were prepared. The new developed sensor is embedded after 10 mm thick asphalt concrete is spread. The following operation is the same as the fabrication of regular asphalt specimens. The MTS810 test machine is used to press the beam as shown in Figure 15. The load is from 0.5 KN∼5 KN, and the steps are 0.5 KN. Two displacement transducers are also installed to measure the flexibility of the beam. According to the monitoring results, we can see that the deformation of the asphalt specimen can be divided into two parts, recoverable and unrecoverable, as shown in Figure 16.


Research on a novel low modulus OFBG strain sensor for pavement monitoring.

Wang C, Hu Q, Lu Q - Sensors (Basel) (2012)

Test of asphalt concrete beam.
© Copyright Policy
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC3472812&req=5

f15-sensors-12-10001: Test of asphalt concrete beam.
Mentions: Steel dies with inner size of 100 mm × 100 mm × 400 mm were prepared. The new developed sensor is embedded after 10 mm thick asphalt concrete is spread. The following operation is the same as the fabrication of regular asphalt specimens. The MTS810 test machine is used to press the beam as shown in Figure 15. The load is from 0.5 KN∼5 KN, and the steps are 0.5 KN. Two displacement transducers are also installed to measure the flexibility of the beam. According to the monitoring results, we can see that the deformation of the asphalt specimen can be divided into two parts, recoverable and unrecoverable, as shown in Figure 16.

Bottom Line: 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.

View Article: PubMed Central - PubMed

Affiliation: School 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.

No MeSH data available.


Related in: MedlinePlus