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Applications of Fiber Optic Sensors in Engineering Mechanics

Abstract

  • Sponsored by the Engineering Mechanics Division of ASCE.

    Recent advances in fiber optic technology and the possibility of its use in civil structures has instigated the development of a number of research activities in the civil engineering community. Fiber optic sensors and smart structure technology have been successfully employed in space and aeronautics applications. With minimal research, these technologies can be applied to civil structure and can help protect our infrastructure.

    This report contains 21 papers describing the current state of the art for this emerging technology. Topics include: techniques for measurement of strain, temperature, pressure, and magnetic fields; smart structure technology; applications in fracture mechanics; and embedment in concrete structures.

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Front Matter
i–vi

    I Overview

    Engineering Applications for Fibre Optic Sensors
    2–16
      Smart Structure Technology and Its Potential for Civil Engineering
      17–38
        The OSTIC Programme: Its Achievements and Their Impact on Instrumentation in Civil Engineering
        39–58

          II Measurement of Strain

          Extrinsic Fabry-Perot Sensor for Structural Evaluation
          60–70
            Etched Fibers for Strain and Vibration Measurements
            71–84
              Interpretation of Embedded Optical Fiber Sensor Signals
              85–99
                Serpentine Optical Fiber Strain Gauge Evaluation
                100–118

                  III Embedment in Concrete Structures

                  Evaluation of Fiber Optic Bragg Grating Strain Sensor in High Strength Concrete Beams
                  120–133
                    Dynamic Testing of Concrete with Fiber Optic Sensors
                    134–143
                      Applications of Embedded Optical Fiber Sensors for Non-Destructive Testing of Concrete Elements and Structures
                      144–158

                        IV Fracture Mechanics

                        A Fiber Optic Sensor for the Determination of Dynamic Fracture Parameters in Fiber Reinforced Concrete
                        160–176
                          Fiber-Optic Sensors and Fracture Mechanics
                          177–192

                            V Strain and Temperature

                            High Temperature Distributed Strain and Temperature Sensing Using OTDR
                            194–209
                              Distributed Fiber Optic Temperature Sensing
                              210–224
                                New Methods for Distributed Optical-Fibre Measurement of Strain and Temperature in Large Structures
                                225–235
                                  Strain and Temperature Measurement Using Optical Fiber
                                  236–250

                                    VI Measurement of Pressure

                                    Single- and Few-Mode Fiber-Optic Pressure Sensors
                                    252–264

                                      VII Measurement of Magnetic Field

                                      Fiber Optic Sensing of Magnetic Field Gradients in Near and Far Field
                                      266–278

                                        VIII Localized Detection and Smart Structures

                                        Spatially Multiplexed Optical Fiber Time Domain Sensors for Civil Engineering Applications
                                        280–287
                                          Shape Memory Alloy Actuators Energized Optically through Optical Fibers for Smart Civil Structures
                                          288–302
                                            Distributed Fiber Optic Sensors for Civil Structures Using OTDR
                                            303–327
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                                              Index
                                              329–330