STP986: Modeling and Data Analysis of the NASA-WSTF Frictional Heating Apparatus: Effects of Test Parameters on Friction Coefficient

    Zhu, S-H
    Scientist and senior engineer, EMSCO, Johnson Space Center, White Sands Test Facility, Las Cruces, NM

    Stoltzfus, JM
    Scientist and senior engineer, EMSCO, Johnson Space Center, White Sands Test Facility, Las Cruces, NM

    Benz, FJ
    Aerospace engineer, NASA, Johnson Space Center, White Sands Test Facility, Las Cruces, NM

    Yuen, WW
    Professor, University of California at Santa Barbara, Santa Barbara, CA

    Pages: 16    Published: Jan 1988


    Abstract

    A theoretical model is being developed jointly by the NASA White Sands Test Facility (WSTF) and the University of California at Santa Barbara (UCSB) to analyze data generated from the WSTF frictional heating test facility. Analyses of the data generated in the first seconds of the frictional heating test are shown to be effective in determining the friction coefficient between the rubbing interfaces. Different friction coefficients for carbon steel and Monel K-500® are observed. The initial condition of the surface is shown to affect only the initial value of the friction coefficient but to have no significant influence on the average steady-state friction coefficient. Rotational speed and the formation of oxide film on the rotating surfaces are shown to have a significant effect on the friction coefficient.

    Keywords:

    friction, heating, ignition, metals, alloys, oxygen, modeling


    Paper ID: STP26746S

    Committee/Subcommittee: G04.93

    DOI: 10.1520/STP26746S


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