RETRACTED: Development of a fiber Bragg grating sensing beam for internal deformation measurement in asphalt pavement

Abstract

The measurement of internal deformation of asphalt pavement is essential for transportation network maintenance, from which the early stage fatigue of asphalt pavement can be detected and then retrofitted. However, existing transducers could only measure either point strains inside the asphalt pavement or the deformation at the surface. To fill this gap, a fiber Bragg grating sensing beam is developed, which can measure the internal deformation of the asphalt pavement under traffic loads. The design principles and working mechanism of the fiber Bragg grating sensing beam are presented in detail. A prototype of the fiber Bragg grating sensing beam was fabricated in the laboratory, and its measurement resolution and maximum deflection, as determined through a calibration test, are 0.29 mm/me and 87.1 mm, respectively. A physical model test established in the laboratory indicated that the fiber Bragg grating sensing beam has a good performance and thus can be used to measure internal deformation of the asphalt pavement.

A Framework for Using UAVs to Detect Pavement Damage Based on Optimal Path Planning and Image Splicing

“…These include a road surface breakage shooting vehicle developed by the French LCPC road management department [6], an automatic pavement-distress-survey system (APDS) developed in Japan [7], a pavement camera evaluation system (PCES) developed by Earth Technology Corporation in U.S. [8], an automatic road analyzer (ARAN) developed by Roadware Corporation in Canada and the Hakeye2000 rapid inspection system developed by the Australian Road Research Board (ARRB) [9]. Furthermore, there are also some scholars who are devoted to pavement crack identification and use various sensor technologies, including polymer optical fiber sensing technology [10], ground penetrating radar (GPR) [11,12], or fiber Bragg grating sensors [13,14]. Each of these pavement detection methods have disadvantages; manual detection, for instance, requires significant human effort [15], has low efficiency and is high-risk [16].…”

Experiment and Numerical Study on Deformation Measurement of Cast-in-Place Concrete Large-Diameter Pipe Pile Using Optical Frequency Domain Reflectometer Technology

“…The strain precisions are OFDR (1 µε), BOTDR (40 µε), BOTDA (20 µε), BOFDA (2 µε), BOCDA (10 µε), FBG (1 µε). The OFDR is a type of DOFS technologies which has shorter measuring time, higher sensitivity, and higher spatial resolution than other frequently-used DOFS technologies like BOTDR, BOTDA, BOFDA, BOCDA, and so on [10][11][12][13][14][15][16][17][18][19][20][21][22][23].…”

Instrumentación de edificios para la evaluación del estado estructural en tiempo real

“…Las carreteras también se han monitorizado para conocer su salud estructural. El asfalto ha sido objeto de muchos trabajos de investigación (Devrez et al, 2019;Xu, Luo and Liu, 2020;Zeng et al, 2020) (Hoyos, Claudia Milena and Cardona, 2010).…”