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        Detection of broken rotor bars in induction motors using stator current measurements

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        Icondetectionofbroke00wels.pdf (10.50Mb)
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        Author
        Welsh, Mark Steven
        Date
        1988
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        Abstract
        This work proved the feasibility of an interferometric, high pressure sensor. A pressure measurement system based on a birefringent, compact, Fabry-Perot etalon was selected and designed. The temperature response of the reflectivity of the etalon was calibrated; a 1 C change in temperature was equivalent to a 1000 psi pressure change. Efficient coupling of the key components was demonstrated using a monolithic, single-frequency, diode-pumped ring laser (developed at Lightwave Electronics Corp. based on Stanford University research), a single-mode optical fiber, and a sapphire etalon. Successful experimental results demonstrated that an optical pressure transducer can be made that has the properties of compactness, wide pressure range, immunity to electro-magnetic interference, and low cost. Keywords: Pressure measurement, Fiber optics, Lasers, Etalon. (JHD)
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        http://hdl.handle.net/10945/23014
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        • 1. Thesis and Dissertation Collection, all items

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          Combs, Martin F.; Gertner, Charles A., Jr. (Monterey, California: U.S. Naval Postgraduate School, 1965);
          The finite-amplitude standing wave behavior of air within several tubes was experimentally investigated near standard conditions of temperature and pressure for frequencies below 3000 cps. The sound pressure levels obtained ...
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          Unsteady separation point injection for pressure recovery improvement in high subsonic diffusers 

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          Hydrofoil static pressure acquisition at high Reynolds number 

          Hamel, Joshua M. (2001);
          From 1999 through 2001 the University of Michigan carried out an experimental study of the high Reynolds number turbulent flow over a hydrofoil. The high Reynolds number foil, or Hifoil project was carried out in three ...
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