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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

Strain sensing properties of PP-OFBG sensor.
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f11-sensors-12-10001: Strain sensing properties of PP-OFBG sensor.

Mentions: The tensile sensing tests were carried out using an universal testing machine. The load measurement precision is 0.001 kg. A 50 mm extensometer was used to measure the tensile strain of the sensor. The strain measurement precision is 0.001 mm. The calibration test is shown as Figure 10. The wavelength of OFBG was measured with the FBG-SLI Interrogator SI720 of Micron Optics. The load, tensile strain, and wavelength of OFBG were recorded, as shown in Figures 11 and 12. Because the PP matrix is in an elastomeric state with a low modulus like asphalt at normal atmospheric a temperature, time-lag phenomenon appears, but the repetitive properties are very good, so it can be used in monitoring low modulus materials or structures.


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

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

Strain sensing properties of PP-OFBG sensor.
© Copyright Policy
Related In: Results  -  Collection

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

f11-sensors-12-10001: Strain sensing properties of PP-OFBG sensor.
Mentions: The tensile sensing tests were carried out using an universal testing machine. The load measurement precision is 0.001 kg. A 50 mm extensometer was used to measure the tensile strain of the sensor. The strain measurement precision is 0.001 mm. The calibration test is shown as Figure 10. The wavelength of OFBG was measured with the FBG-SLI Interrogator SI720 of Micron Optics. The load, tensile strain, and wavelength of OFBG were recorded, as shown in Figures 11 and 12. Because the PP matrix is in an elastomeric state with a low modulus like asphalt at normal atmospheric a temperature, time-lag phenomenon appears, but the repetitive properties are very good, so it can be used in monitoring low modulus materials or structures.

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