Fiber optic white light distributed sensor for condition monitoring of civil structures

Condition Monitoring of civil structures is best accomplished by way of distributed sensors. Sensors capable of making distributed measurements allow for monitoring the entire structure. Optical fiber sensors are especially very attractive for this purpose, since they are geometrically versatile and they can be readily integrated within various types of structures and materials. The research presented here describes the development of a new optical fiber sensor system for measurement of structural strains based on white light interferometry. Individual sensors are linked through simple connectors, and an optical switch provides for multiplexing of strain signals from various locations in the structure. Redundant Bragg grating type fiber optic sensors as well as strain gauges were employed for comparison and verification of strain signals as measured by the new system. The system provides capability for distributed sensing of strains in large structures. (A) For the covering abstract see ITRD E127016.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/1566766710
• Authors:
  • CHEN, Z
  • MENDEZ, A
  • LI, Q
  • ANSARI, F
• Publication Date: 1998

Language

• English

Media Info

• Pagination: 101-14
• Serial:
  • FIBER OPTICS SENSORS FOR CONSTRUCTION MATERIALS AND BRIDGES - PROCEEDINGS OF THE INTERNATIONAL WORKSHOP HELD MAY 1998
  • Publisher: TECHNOMIC PUBLISHING COMPANY INC

Subject/Index Terms

• TRT Terms: Condition surveys; Conferences; Fiber optics; Sensors; Strain gages; Structures; Surveillance
• ITRD Terms: 3857: Condition survey; 8525: Conference; 3355: Engineering structure; 6765: Fibre optics; 6120: Sensor; 5562: Strain gauge; 9101: Surveillance
• Subject Areas: Bridges and other structures; Maintenance and Preservation; I61: Equipment and Maintenance Methods;

Filing Info

• Accession Number: 01013826
• Record Type: Publication
• Source Agency: Transport Research Laboratory
• ISBN: 1-56676-671-0
• Files: ITRD
• Created Date: Dec 22 2005 11:23AM