The cooperative deformation test of an embedded FBG sensor and strain correction curve verification

In order to accurately measure the internal structural strain of asphalt pavement using a fiber Bragg grating (FBG) sensor, the cooperative deformation characteristics of the FBG sensor and asphalt mixture were investigated. First, the cooperative deformation test and evaluation method were designed for the developed three FBG sensors, and the strain correction curve was drawn to modify the measurement results. Next, the sensitivity, stability, survival rate, and other factors were considered comprehensively to optimize the FBG sensor and make it suitable for the internal monitoring of asphalt roads. Finally, the accuracy of the average strain correction curve was verified. The main conclusions are as follows: (a) the strain data monitored by the embedded FBG sensor can reflect the deformation accumulation and elastic recovery of the material in asphalt roads; (b) the FBG sensors, with large or small correction coefficients, affect the measurement accuracy and stability of long-term monitoring; (c) the strain data fluctuated from 8.1 to 9.05% after temperature compensation; and (d) the average strain correction curve can modify the strain monitored by the FBG sensor. The measurement results are accurate, and the measurement error was about 3.01–9.14%.

• Record URL:
  • https://doi.org/10.1016/j.conbuildmat.2022.128029
• Record URL:
  • http://www.sciencedirect.com/science/article/pii/S0950061822016981
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/09500618
• Supplemental Notes:
  • © 2022 Elsevier Ltd. All rights reserved. Abstract reprinted with permission of Elsevier.
• Authors:
  • Liao, Menghui
  • 0000-0003-0542-5844
  • Liang, Sheng
  • Luo, Rong
  • Xiao, Yuxiang
• Publication Date: 2022-8-1

Language

• English

Media Info

• Media Type: Web
• Features: Figures; Illustrations; Photos; References; Tables;
• Pagination: 128029
• Serial:
  • Construction and Building Materials
  • Volume: 342
  • Issue Number: 0
  • Publisher: Elsevier
  • ISSN: 0950-0618
  • Serial URL: http://www.sciencedirect.com/science/journal/09500618?sdc=1

Subject/Index Terms

• TRT Terms: Asphalt additives; Asphalt pavements; Deformation; Sensors; Strain (Mechanics)
• Subject Areas: Highways; Maintenance and Preservation; Pavements;

Filing Info

• Accession Number: 01853417
• Record Type: Publication
• Files: TRIS
• Created Date: Jul 29 2022 9:21AM