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Heat effects of promoters and determination of burn criterion in promoted combustion testing

Sparks, Kyle M., Stoltzfus, Joel, Steinberg, Theodore, & Lynn, David Benjamin (2010) Heat effects of promoters and determination of burn criterion in promoted combustion testing. In The 4th International Association for the Advancement of Space Safety Conference: Making Safety Matter, 19-21 May 2010, Huntsville, AL.

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Abstract

Promoted ignition testing (NASA) Test 17) [1] is used to determine the relative flammability of metal rods in oxygen-enriched atmospheres. A promotor is used to ignite a metal sample rod, initiating sample burning. If a predetermined length of the sample burns, beyond the promotor, the material is considered flammable at the condition tested. Historically, this burn length has been somewhat arbitrary. Experiments were performed to better understand this test by obtaining insight into the effect a burning promotor 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. Thermocouple measurements and test video were synchronized to determine temperature increase with respect to time and length along each test sample. A recommended flammability burn length, based on a sample preheat of 500 degrees fahrenheit, 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.

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ID Code: 40808
Item Type: Conference Item (Other)
Subjects: Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > MATERIALS ENGINEERING (091200)
Divisions: Past > QUT Faculties & Divisions > Faculty of Built Environment and Engineering
Past > Schools > School of Engineering Systems
Deposited On: 22 May 2012 10:45
Last Modified: 22 May 2012 10:45

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