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    Method and apparatus for measuring pressure with embedded non-intrusive fiber optics

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    5452087.pdf (474.3Kb)
    Date
    1995-09-19
    Author
    Taylor, Henry F.
    Atkins, Robert A.
    Gibler, William N.
    Lee, Chung-Eun
    Mccoy, James J.
    Spears, Matthew O.
    Oakland, Mark D.
    Swenson, Victor P.
    Beshouri, Gregory M.
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    Abstract
    A method and apparatus is provided for measuring pressure in a pressure containing vessel with a non-intrusive, metal-embedded fiber optic pressure sensor. The pressure containing vessel may, for example, be the combustion chamber of an internal combustion engine. A Fabry-Perot Interferometer is arranged in a terminated, single mode fiber to function as a strain gauge. The fiber Fabry-Perot Interferometer (FFPI) is embedded in a metal part which may be disposed in a wall of the pressure containing vessel. The metal part and FFPI experience a longitudinal strain in response to the pressure in the vessel. In another aspect of the invention, a non-intrusive fiber containing the FFPI may be embedded along the axis of a metal bolt. The bolt may be used to attach a part or structure, which is directly exposed to the pressure, to the wall of the vessel. Consequently, the bolt and FFPI experience a longitudinal strain in response to the pressure on the part or structure. In this aspect, the part or structure exposed to the pressure may be, for example, a fuel injection valve that is attached by the bolt to a cylinder head of an internal combustion engine.
    URI
    https://hdl.handle.net/1969.1/176529
    Subject
    356/480
    250/227.19
    356/35.5
    385/12
    G01L 11/025
    G01L 23/16
    Collections
    • Texas A&M University Patents
    Citation
    Taylor, Henry F.; Atkins, Robert A.; Gibler, William N.; Lee, Chung-Eun; Mccoy, James J.; Spears, Matthew O.; Oakland, Mark D.; Swenson, Victor P.; Beshouri, Gregory M. (1995). Method and apparatus for measuring pressure with embedded non-intrusive fiber optics. United States. Patent and Trademark Office; Texas A&M University. Libraries. Available electronically from https : / /hdl .handle .net /1969 .1 /176529.

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