Polyimide-coated embedded optical fiber sensors

Dilip K. Nath; Gary W. Nelson; Stephen E. Griffin; C. T. Harrington; Yi-Fei He; Lawrence J. Reinhart; D. C. Paine; Theodore F. Morse

doi:10.1117/12.46584

1 October 1991 Polyimide-coated embedded optical fiber sensors

Dilip K. Nath, Gary W. Nelson, Stephen E. Griffin, C. T. Harrington, Yi-Fei He, Lawrence J. Reinhart, D. C. Paine, Theodore F. Morse

Author Affiliations +

Proceedings Volume 1489, Structures Sensing and Control; (1991) https://doi.org/10.1117/12.46584
Event: Orlando '91, 1991, Orlando, FL, United States

Abstract

The present paper describes the behavior of embedded optical sensor fibers in a high- temperature PEEK (polyether ether ketone) carbon fiber composite. Sheets of this material, 200 micrometers thick, were layered in alternating directions for the carbon fibers. Typically, 16 sheets were used to form 3' X 6' or 3' X 8' panels by placing the optical fibers in the middle of the `prepreg' sheets, which were then heated to the processing temperature, and subjected to a pressure of 300 psi during the cool-down phase. Since the ordinary polymeric coatings of optical fibers cannot survive the 380 degree(s)C to 400 degree(s)C processing temperature of PEEK impregnated fiber composites, all of the optical sensor fibers tested were polyimide coated. The optical, mechanical, and thermal properties are reported and it is concluded that polyimide coated fibers can withstand PEEK processing conditions.

Citation Download Citation

Dilip K. Nath, Gary W. Nelson, Stephen E. Griffin, C. T. Harrington, Yi-Fei He, Lawrence J. Reinhart, D. C. Paine, and Theodore F. Morse "Polyimide-coated embedded optical fiber sensors", Proc. SPIE 1489, Structures Sensing and Control, (1 October 1991); https://doi.org/10.1117/12.46584

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