Determination of Burn Criterion for Promoted Combustion Testing

    Volume 6, Issue 10 (November 2009)

    ISSN: 1546-962X

    CODEN: JAIOAD

    Published Online: 10 September 2009

    Page Count: 11


    Sparks, Kyle M.
    Mechanical Engineer, NASA Test and Evaluation Contract, Las Cruces, NM

    Stoltzfus, Joel M.
    Laboratories Office, NASA Johnson Space Center White Sands Test Facility, Las Cruces, NM

    Steinberg, Theodore A.
    Senior Lecturer, School of Engineering Systems, Queensland University of Technology (QUT), Brisbane, QLD

    Lynn, David
    Postgraduate Student, School of Engineering Systems, Queensland University of Technology (QUT), Brisbane, QLD

    (Received 27 January 2009; accepted 18 August 2009)

    Abstract

    Promoted ignition testing [1–3] is used to determine the relative flammability of metal rods in oxygen-enriched atmospheres. In these tests, a promoter is used to ignite each metal rod to start the sample burning. Experiments were performed to better understand the promoted ignition test by obtaining insight into the effect a burning promoter has on the preheating of a test sample. Test samples of several metallic materials were prepared and coupled to fast-responding thermocouples along their length. Various ignition promoters were used to ignite the test samples. The thermocouple measurements and test video were synchronized to determine temperature increase with respect to time and length along each test sample. A recommended length of test sample that must be consumed to be considered a flammable material was determined based on the preheated zone measured from these tests. This length was determined to be 30 mm (1.18 in.). Validation of this length and its rationale are presented.


    Paper ID: JAI102351

    DOI: 10.1520/JAI102351

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    Author
    Title Determination of Burn Criterion for Promoted Combustion Testing
    Symposium Twelfth International Symposium on Flammability and Sensitivity of Materials in Oxygen-Enriched Atmospheres, 2009-10-09
    Committee G04