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  • 1
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    New Wire Constructions for Active Damage Detection (2011)
    In:  CASI
    Details
    Publication Date: 2019-07-13
    Description: No abstract available
    Keywords: Electronics and Electrical Engineering
    Type: KSC-2011-076 , Aircraft Airworthiness and Sustainment 2011 Conference; Apr 18, 2011 - Apr 21, 2011; San Diego, CA; United States
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 2
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    Electric Vehicle Charging Stations as a Climate Change Mitigation Strategy (2014)
    In:  CASI
    Details
    Publication Date: 2019-07-12
    Description: In order to facilitate the use of electric vehicles at NASA Langley Research Center (LaRC), charging stations should be made available to LaRC employees. The implementation of charging stations would decrease the need for gasoline thus decreasing CO2 emissions improving local air quality and providing a cost savings for LaRC employees. A charging station pilot program is described that would install stations as the need increased and also presents a business model that pays for the electricity used and installation at no cost to the government.
    Keywords: Electronics and Electrical Engineering
    Type: NASA/TM-2014-218186 , L-20253 , NF1676L-16569
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 3
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    Method for Predicting and Optimizing System Parameters for Electrospinning System (2011)
    In:  CASI
    Details
    Publication Date: 2019-08-28
    Description: An electrospinning system using a spinneret and a counter electrode is first operated for a fixed amount of time at known system and operational parameters to generate a fiber mat having a measured fiber mat width associated therewith. Next, acceleration of the fiberizable material at the spinneret is modeled to determine values of mass, drag, and surface tension associated with the fiberizable material at the spinneret output. The model is then applied in an inversion process to generate predicted values of an electric charge at the spinneret output and an electric field between the spinneret and electrode required to fabricate a selected fiber mat design. The electric charge and electric field are indicative of design values for system and operational parameters needed to fabricate the selected fiber mat design.
    Keywords: Electronics and Electrical Engineering
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 4
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    Thermal Control Method for High-Current Wire Bundles by Injecting a Thermally Conductive Filler (2011)
    In:  CASI
    Details
    Publication Date: 2019-07-12
    Description: A procedure was developed to inject thermal filler material (a paste-like substance) inside the power wire bundle coming from solar arrays. This substance fills in voids between wires, which enhances the heat path and reduces wire temperature. This leads to a reduced amount of heat generated. This technique is especially helpful for current and future generation high-power spacecraft (1 kW or more), because the heat generated by the power wires is significant enough to cause unacceptable overheating to critical components that are in close contact with the bundle.
    Keywords: Electronics and Electrical Engineering
    Type: GSC-15987-1 , NASA Tech Briefs, April 2011; 19
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 5
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    Development and Application of Wide Bandwidth Magneto-Resistive Sensor Based Eddy Current Probe (2010)
    In:  CASI
    Details
    Publication Date: 2019-07-13
    Description: The integration of magneto-resistive sensors into eddy current probes can significantly expand the capabilities of conventional eddy current nondestructive evaluation techniques. The room temperature solid-state sensors have typical bandwidths in the megahertz range and resolutions of tens of microgauss. The low frequency sensitivity of magneto-resistive sensors has been capitalized upon in previous research to fabricate very low frequency eddy current sensors for deep flaw detection in multilayer conductors. In this work a modified probe design is presented to expand the capabilities of the device. The new probe design incorporates a dual induction source enabling operation from low frequency deep flaw detection to high frequency high resolution near surface material characterization. Applications of the probe for the detection of localized near surface conductivity anomalies are presented. Finite element modeling of the probe is shown to be in good agreement with experimental measurements.
    Keywords: Electronics and Electrical Engineering
    Type: NF1676L-10687 , 37th Annual Review of Progress in QNDE; Jul 18, 2010 - Jul 23, 2010; San Diego, CA; United States
    Format: application/pdf
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    NASA TECHNICAL REPORTS
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