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  • 1
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    Membrane Tension Control (2005)
    In:  CASI
    Details
    Publication Date: 2019-08-13
    Description: An electrostrictive polymer actuator comprises an electrostrictive polymer with a tailorable Poisson's ratio. The electrostrictive polymer is electroded on its upper and lower surfaces and bonded to an upper material layer. The assembly is rolled tightly and capped at its ends. In a membrane structure having a membrane, a supporting frame and a plurality of threads connecting the membrane to the frame, an actuator can be integrated into one or more of the plurality of threads. The electrostrictive polymer actuator displaces along its longitudinal axis, thereby affecting movement of the membrane surface.
    Keywords: Mechanical Engineering
    Format: text
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    NASA TECHNICAL REPORTS
  • 2
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    Membrane position control (2004)
    In:  CASI
    Details
    Publication Date: 2019-08-28
    Description: A membrane structure includes at least one electroactive bending actuator fixed to a supporting base. Each electroactive bending actuator is operatively connected to the membrane for controlling membrane position. Any displacement of each electroactive bending actuator effects displacement of the membrane. More specifically, the operative connection is provided by a guiding wheel assembly and a track, wherein displacement of the bending actuator effects translation of the wheel assembly along the track, thereby imparting movement to the membrane.
    Keywords: Mechanical Engineering
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 3
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    One-Dimensional Contact Mode Interdigitated Center of Pressure Sensor (CMIPS) (2009)
    In:  CASI
    Details
    Publication Date: 2019-07-13
    Description: A one dimensional contact mode interdigitated center of pressure sensor (CMIPS) has been developed. The experimental study demonstrated that the CMIPS has the capability to measure the overall pressure as well as the center of pressure in one dimension, simultaneously. A theoretical model for the CMIPS is established here based on the equivalent circuit of the configuration of the CMIPS as well as the material properties of the sensor. The experimental results match well with theoretical modeling predictions. A system mapped with two or more pieces of the CMIPS can be used to obtain information from the pressure distribution in multi-dimensions.
    Keywords: Mechanical Engineering
    Type: LF99-8632 , Applied Physics Letters; 94; 23
    Format: application/pdf
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