Instantaneous RRMI of Iron Rods in Reduced Gravity
Edwards, Amanda P.R., Chiffoleau, Gwenael J.A., Maes, Migue J., & Steinberg, Theodore A. (2003) Instantaneous RRMI of Iron Rods in Reduced Gravity. In Steinberg, T.A., Beeson, H.D., & Newwton, B.E. (Eds.) Flammability and Sensitivity of Materials in Oxygen-Enriched Atmospheres: Tenth Volume, ASTM STP 1454. American Society for Testing and Materials.
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Standard upward -burning promoted ignition tests (“Standard Test Method for Determining the Combustion Behavior of Metallic Materials in Oxygen-Enriched Atmospheres," ASTM G4-124  or “Flammability, Odor, Offgassing, and Compatibility Requirements and Test Procedures for Materials in Environments that Support Combustion," NASA -STD-6001, NASA Test 17 ) were performed on cylindrical iron (99.95% pure) rods in various oxygen purities (95.0–99.98%) in reduced gravity onboard NASA JSC’s KC-135 to investigate the effect of gravity on the regression rate of the melting interface. Visual analysis of experiments agrees with previous published observations showing distinct motions of the molten mass attached to the solid rod during testing. Using an ultrasonic technique to record the real-time rod length, comparison of the instantaneous regression rate of the melting interface and visual recording shows a non-steady-state regression rate of the melting interface for the duration of a test. Precessional motion is associated with a higher regression rate of the melting interface than for test periods in which the molten mass does not show la teral motion. The transition between the two types of molten mass motion during a test was accompanied by a reduced regression rate of the melting interface, approximately 15–50% of the average regression rate of the melting interface for the entire test.
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|Item Type:||Book Chapter|
|Additional Information:||For more information about this book please refer to the publisher's website (see link) or contact the author . Author contact details : email@example.com|
|Keywords:||iron, reduced gravity, promoted ignition test, geometry, precessing, modeling, metals combustion, melting interface, regression rates, metals burning, oxygen compatability, fire, safety|
|Subjects:||Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > MECHANICAL ENGINEERING (091300) > Mechanical Engineering not elsewhere classified (091399)|
|Divisions:||Past > QUT Faculties & Divisions > Faculty of Built Environment and Engineering|
|Copyright Owner:||Copyright 2003 American Society for Testing and Materials|
|Deposited On:||18 Nov 2005|
|Last Modified:||29 Feb 2012 23:21|
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