DEVELOPMENT OF A SURFACE APPLIED FIBRE OPTIC MONITORING. FINAL REPORT

The project reported deals with the problem of detecting, by means of optical fibre sensors, crack growth on concrete and steel bridge type test specimens undergoing static and fatigue loadings. The range of minimum crack width detection was determined for cracks appearing in the surface of concrete beams, and for fatigue cracks growing a) from the toes of fillet welds, b) along butt welds, and c) on longitudinal stiffeners. The objective of the project was to develop an essentially laboratory-based prototype device into a reliable and rugged system which can be used indefinitely on bridges continuously carrying heavy traffic. This project was carried out for the Transport and Road Research Laboratory, Crowthorne, Berkshire. (TRRL)

Corporate Authors:
NMI Limited

Capitol Projects and Trials Division, St John's Street
Southampton, England
Authors:
- Hale, K F
- Halliday, M A
Publication Date: 1984-11

Media Info

Features: Figures; Photos; Tables;
Pagination: 56 p.

Subject/Index Terms

TRT Terms: Beams; Bridges; Butt welds; Concrete; Cracking; Detection and identification; Detectors; Failure; Fiber optics; Fibers; Fillet welds; Longitudinal stiffeners; Measurement; Measuring instruments; Metal bridges; Monitoring; Optical instruments; Sensors; Steel; Steel bridges; Structures
Uncontrolled Terms: Concrete beams; Concrete cracking
ITRD Terms: 3455: Bridge; 4755: Concrete; 5211: Cracking; 9115: Detection; 3355: Engineering structure; 4557: Fibre; 6136: Measurement; 6782: Optical instrument; 6120: Sensor; 4542: Steel
Subject Areas: Bridges and other structures; Design; Geotechnology; Highways; Materials; Planning and Forecasting; I24: Design of Bridges and Retaining Walls; I32: Concrete; I34: Steels and Metals; I72: Traffic and Transport Planning;

Filing Info

Accession Number: 00393326
Record Type: Publication
Source Agency: Transport Research Laboratory
Report/Paper Numbers: Monograph
Files: ITRD, TRIS
Created Date: Jun 30 1985 12:00AM