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A Research on Low Modulus Distributed Fiber Optical Sensor for Pavement Material Strain Monitoring
Lingjian Meng1, Linbing Wang2, Yue Hou3
1National Center for Materials Service Safety, University of Science and Technology Beijing, Beijing 100083,China. b20150405@xs.ustb.edu.cn.
Abstract:
The accumulated irreversible deformation in pavement under repeated vehicle loadings will cause fatigue failure of asphalt concrete. It is necessary to monitor the mechanical response of pavement under load by using sensors. Previous studies have limitations in modulus accommodation between the sensor and asphalt pavement, and it is difficult to achieve the distributed monitoring goal. To solve these problems, a new type of low modulus distributed optical fiber sensor (DOFS) for asphalt pavement strain monitoring is fabricated. Laboratory experiments have proved the applicability and accuracy of the newly-designed sensor. This paper presents the results of the development.
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