A review of previous studies on the applications of optical fiber sensors in geotechnical health monitoring

Hua Fu Pei, Jun Teng, Jianhua Yin, Rui Chen

Research output: Journal article publicationJournal articleAcademic researchpeer-review

52 Citations (Scopus)

Abstract

In recent decades, conventional electric instruments have already been widely used to monitor the performance of geotechnical structures. However, there are several inherent limitations of electric instruments for engineering including: electromagnetic interference, a large number of cables for multipoint measurement, signal loss in long distance transmission, and poor durability. Since the first Fiber Bragg Grating (FBG) sensor was fabricated in 1978, a significant progress has been made on the commercialization of optical fiber sensing technologies. In 1980s, a fully distributed sensing technology named Brillouin Optical Time Domain Analysis (BOTDA) has been proposed and developed for measuring strain and temperature. In this paper, the authors review previous studies on the development and application of fiber optic sensors. Based on the measured strains, various analysis methods were transferred to required parameters such as displacement, force and pressure which can more directly reflect the safety of geotechnical structures under complex engineering stress condition.
Original languageEnglish
Pages (from-to)207-214
Number of pages8
JournalMeasurement: Journal of the International Measurement Confederation
Volume58
DOIs
Publication statusPublished - 1 Dec 2014

Keywords

  • Brillouin Optical Time Domain Analysis
  • Fiber Bragg Grating
  • Geotechnical structure
  • Structural health monitoring

ASJC Scopus subject areas

  • Instrumentation
  • Electrical and Electronic Engineering

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