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    Apparatus and method for volumetric dilatometry

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    6718281.pdf (930.9Kb)
    Downloads: 80
    Publication Date
    2004-04-06
    Filing Date
    2001-02-15
    Inventor
    Duncan, Paul G.
    Christian, Sean M.
    Shinpaugh, Kevin A.
    Marand, Herve
    Metadata
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    Abstract
    Disclosed is a novel apparatus and method for volumetric dilatometry. A volumetric dilatometer includes an optical displacement sensor and a means for using a gap measurement obtained from the displacement sensor application in an application which requires the measurement of absolute distance and/or displacement. A novel signal-processing algorithm for volumetric dilatometry is also disclosed. The signal-processing algorithm includes a step for recovering the phase information from a spectral signal by taking the Fourier transform of a spectral signal and deriving a sensor gap measurement from the phase information. A micro-translation stage is provided for automated positioning of the optical sensor and automated re-leveling in an out-of-range condition. A heat source is consists of a vertical tube furnace, such as those found in drywell technologies. Further disclosed is a novel sealed-cell design which consists of a mercury reservoir, a sample cell capable of locking onto the bottom of the mercury reservoir and an outer reservoir sleeve for sensor-to-cell alignment during sensor positioning.
    Assignee
    Virginia Polytechnic Institute and State University
    Patent Number
    6718281
    Application Number
    9783389
    Source URL
    http://pimg-fpiw.uspto.gov/fdd/81/182/067/0.pdf
    Primary/U.S. Class
    702/159
    Other/U.S. Class
    CPC Class
    G01B11/18
    G01B11/161
    Patent Type
    utility
    URI
    http://hdl.handle.net/10919/72489
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