Author Information

Parker BrooksFollow

Is this project an undergraduate, graduate, or faculty project?

Undergraduate

group

Daytona Beach

Poster Session

Authors' Class Standing

Parker Brooks, Senior

Lead Presenter's Name

Parker Brooks

Faculty Mentor Name

Dr. Dan Su

Loading...

Media is loading
 

Abstract

The goal of this project is to optimize the existing optical frequency-domain reflectometry (OFDR) method to facilitate dynamic structural health monitoring using Distributed Optical Fiber Sensors (DOFS) under field conditions. DOFS are gaining interest in Structural Health Monitoring (SHM) applications, especially for large and irregular structures. These sensors offer a cost-effective solution that reveals temperature, strain, and vibration information from any point along the entire length of an optical fiber. However, one of the biggest challenges that hinder the wide implementation of DOFS is the dynamic monitoring capability under field conditions. Although several efforts have been made to improve the dynamic monitoring capability of DOFS using polarization-optical time-domain reflectometry (OTDR), OTDR is limited to a spatial resolution of ~1m. The cost to improve the spatial resolution of OTDR is very high and limits its suitability for a large range of structural monitoring applications. On the other hand, optical frequency-domain reflectometry (OFDR) technique offer high spatial resolution and easy setup for stationary measurements. If similar performance can be achieved under dynamic monitoring conditions, OFDR can be implemented in virtually any SHM application. To date, only preliminary studies have been performed under laboratory conditions to evaluate dynamic measurements using OFDR. Thus, this study aims at developing an optimized OFDR for dynamic monitoring using DOFS under field conditions. Advanced algorithms have been developed for spectral analysis along with new de-noising methods. A laboratory experimental program and field monitoring program were carried out to validate static and dynamic measurements with conventional sensors, respectively. The research related to OFDR-based dynamic monitoring is still in the early stages of development. Successful execution of this project gives ERAU a great advantage in our signature SHM field. Based on findings from this project, future research proposals will be submitted to the FDOT Structural Research Center, NCHRP Highway IDEA program, and the EPMD program of NSF.

Did this research project receive funding support (Spark, SURF, Research Abroad, Student Internal Grants, or Ignite Grants) from the Office of Undergraduate Research?

Yes, Spark Grant

Share

COinS
 

Optimization of Optical Frequency-domain Reflectometry for Dynamic Structural Health Monitoring using Distributed Optical Fiber Sensors

The goal of this project is to optimize the existing optical frequency-domain reflectometry (OFDR) method to facilitate dynamic structural health monitoring using Distributed Optical Fiber Sensors (DOFS) under field conditions. DOFS are gaining interest in Structural Health Monitoring (SHM) applications, especially for large and irregular structures. These sensors offer a cost-effective solution that reveals temperature, strain, and vibration information from any point along the entire length of an optical fiber. However, one of the biggest challenges that hinder the wide implementation of DOFS is the dynamic monitoring capability under field conditions. Although several efforts have been made to improve the dynamic monitoring capability of DOFS using polarization-optical time-domain reflectometry (OTDR), OTDR is limited to a spatial resolution of ~1m. The cost to improve the spatial resolution of OTDR is very high and limits its suitability for a large range of structural monitoring applications. On the other hand, optical frequency-domain reflectometry (OFDR) technique offer high spatial resolution and easy setup for stationary measurements. If similar performance can be achieved under dynamic monitoring conditions, OFDR can be implemented in virtually any SHM application. To date, only preliminary studies have been performed under laboratory conditions to evaluate dynamic measurements using OFDR. Thus, this study aims at developing an optimized OFDR for dynamic monitoring using DOFS under field conditions. Advanced algorithms have been developed for spectral analysis along with new de-noising methods. A laboratory experimental program and field monitoring program were carried out to validate static and dynamic measurements with conventional sensors, respectively. The research related to OFDR-based dynamic monitoring is still in the early stages of development. Successful execution of this project gives ERAU a great advantage in our signature SHM field. Based on findings from this project, future research proposals will be submitted to the FDOT Structural Research Center, NCHRP Highway IDEA program, and the EPMD program of NSF.

 

To view the content in your browser, please download Adobe Reader or, alternately,
you may Download the file to your hard drive.

NOTE: The latest versions of Adobe Reader do not support viewing PDF files within Firefox on Mac OS and if you are using a modern (Intel) Mac, there is no official plugin for viewing PDF files within the browser window.