Title page for ETD etd-02132009-171339

Type of Document Master's Thesis
Author Koob, Christopher E.
URN etd-02132009-171339
Title High temperature fiber optic strain sensing
Degree Master of Science
Department Electrical Engineering
Advisory Committee
Advisor Name Title
Claus, Richard O. Committee Chair
Jacobs, Ira Committee Member
Midkiff, Scott F. Committee Member
  • Fiber optics
Date of Defense 1991-05-15
Availability restricted

Two high temperature fiber optic based strain sensors have been developed for use in a coal combustor environment. An intensity based sensor uses losses created by longitudinal misalignment as a sensing mechanism and has a maximum operating temperature of 700°C. An interferometric based sensor makes use of a Fabry-Perot cavity created by aligning two fibers in a splice tube with a small gap in between. The Fabry-Perot based sensors' maximum operating temperature is 950°C. Attachment methods and sensor design are discussed as well as the presentation of results from in situ testing.

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