• Login
    View Item 
    •   SMARTech Home
    • Georgia Tech Patents
    • Georgia Tech Patents
    • View Item
    •   SMARTech Home
    • Georgia Tech Patents
    • Georgia Tech Patents
    • View Item
    JavaScript is disabled for your browser. Some features of this site may not work without it.

    Rotational Displacement Apparatus With Ultra-low Torque And High Thrust Load Capability

    Thumbnail
    View/Open
    5967017.pdf (343.7Kb)
    Date
    10/19/1999
    Author
    Hooke, David Andrew
    Armanios, Erian A.
    Metadata
    Show full item record
    Abstract
    An improved rotational displacement apparatus is provided for measuring accurately the twist induced in an extension-twist coupled specimen in response to application of an axial load. The apparatus has an internal cylinder within which a piston rides. A piston rod extends from the piston through a pair of radial ball bearings in the base of the cylinder block to a free end outside the cylinder block. The piston is sized to be slightly smaller in diameter than the cylinder to provide a small space between the piston and the cylinder walls. A part for supplying compressed air to the region of the cylinder below the piston and a part for venting air from the region of the cylinder above the piston are provided. An optical encoder is coupled to measure rotational motion of the piston within the cylinder. In use, the apparatus is mounted in a testing machine and a specimen to be tested is secured at one end to the free end of the piston rod and at its other end to the mounting block of the testing machine. Compressed air is supplied to the cylinder causing the piston to ride up in the cylinder to apply an axial load to the test specimen. The piston rides on a cushion of compressed air and is free to rotate virtually friction free. Thus, any twist induced in the specimen as a result of the axial load causes the piston to rotate and this rotation is measured by the optical encoder.
    URI
    http://hdl.handle.net/1853/57312
    Collections
    • Georgia Tech Patents [1761]

    Browse

    All of SMARTechCommunities & CollectionsDatesAuthorsTitlesSubjectsTypesThis CollectionDatesAuthorsTitlesSubjectsTypes

    My SMARTech

    Login

    Statistics

    View Usage StatisticsView Google Analytics Statistics
    facebook instagram twitter youtube
    • My Account
    • Contact us
    • Directory
    • Campus Map
    • Support/Give
    • Library Accessibility
      • About SMARTech
      • SMARTech Terms of Use
    Georgia Tech Library266 4th Street NW, Atlanta, GA 30332
    404.894.4500
    • Emergency Information
    • Legal and Privacy Information
    • Human Trafficking Notice
    • Accessibility
    • Accountability
    • Accreditation
    • Employment
    © 2020 Georgia Institute of Technology