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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

Variation of apparent viscosity of PP. matrix (0%∼15%) with temperature.
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f1-sensors-12-10001: Variation of apparent viscosity of PP. matrix (0%∼15%) with temperature.

Mentions: The rheology behaviors of seven kinds of PP with different contents of MA-G-PP were tested using the AR2000 rheometer produced by TA Instruments. It can be seen from Figure 1 that the apparent viscosity of melting PP is very sensitive to temperature. With the temperature raises from 180 °C to 260 °C, the viscosity decreases to about the 1/3 of the original value of each specimen. The higher the content of the MA-G-PP, the lower the viscosity is. For low levels of MA-G-PP content, such as 0%, 1% and 3%, the change of viscosity is not apparent. A sudden drop appears for the 5% content, while 7%, 10% and 15% show almost identical results as the former. The viscosity of the PP with 5% of MA-G-PP is much lower than that of the PP without MA-G-PP, as shown in Figure 1. Concerning both the viscosity and the degradation of PP, 220 °C is a proper operating temperature.


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

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

Variation of apparent viscosity of PP. matrix (0%∼15%) with temperature.
© Copyright Policy
Related In: Results  -  Collection

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

f1-sensors-12-10001: Variation of apparent viscosity of PP. matrix (0%∼15%) with temperature.
Mentions: The rheology behaviors of seven kinds of PP with different contents of MA-G-PP were tested using the AR2000 rheometer produced by TA Instruments. It can be seen from Figure 1 that the apparent viscosity of melting PP is very sensitive to temperature. With the temperature raises from 180 °C to 260 °C, the viscosity decreases to about the 1/3 of the original value of each specimen. The higher the content of the MA-G-PP, the lower the viscosity is. For low levels of MA-G-PP content, such as 0%, 1% and 3%, the change of viscosity is not apparent. A sudden drop appears for the 5% content, while 7%, 10% and 15% show almost identical results as the former. The viscosity of the PP with 5% of MA-G-PP is much lower than that of the PP without MA-G-PP, as shown in Figure 1. Concerning both the viscosity and the degradation of PP, 220 °C is a proper operating temperature.

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