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Optical Engineering

Fiber grating systems used to measure strain in cylindrical structures
Author(s): Eric Udd; Kelli Corona-Bittick; Kerry T. Slattery; Donald James Dorr; C. Robert Crowe; Terry L. Vandiver; Robert N. Evans
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Paper Abstract

Fiber optic grating systems are described that have been used to measure strain in cylindrical structures. The applications of these systems to a composite utility pole and to a composite missile body are described. Composite utility poles have significant advantages with respect to wooden utility poles that include superior strength and uniformity; light weight for ease of deployment; the ability to be recycled, reducing hazardous waste associated with chemically treated wooden poles; and compatibility with embedded fiber optic sensors, allowing structural loads to be monitored. Tests conducted of fiber optic grating sensors in combination with an overcoupled coupler demodulation system to support structural testing of a 22-ft composite pole are reported. Monitoring strain in composite missile bodies has the potential to improve the quality of manufactured parts, support performance testing, and enhance safety during long periods of storage. Strain measurements made with fiber optic grating and electrical strain gauges are described.

Paper Details

Date Published: 1 July 1997
PDF: 8 pages
Opt. Eng. 36(7) doi: 10.1117/1.601408
Published in: Optical Engineering Volume 36, Issue 7
Show Author Affiliations
Eric Udd, Blue Road Research (United States)
Kelli Corona-Bittick, Production Products and Sales Inc. (United States)
Kerry T. Slattery, Washington Univ. (United States)
Donald James Dorr, Duke and Associates (United States)
C. Robert Crowe, DARPA (United States)
Terry L. Vandiver, U.S. Army Missile Command (United States)
Robert N. Evans, U.S. Army Missile Command (United States)

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