Concurrent Upward Flame Spread over a Fire Resistant Fabric (Nomex) under External Heating

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dc.creatorThomsen, Maria
dc.creatorHuang, Xinyan
dc.creatorAlonso, Alain
dc.creatorFernandez-Pello, Carlos
dc.creatorUrban, David
dc.creatorRuff, Gary
dc.date.accessioned2017-07-07T22:19:53Z
dc.date.available2017-07-07T22:19:53Z
dc.date.issued2017-07-16
dc.descriptionMaria Thomsen, University of California Berkeley, USA
dc.descriptionXinyan Huang, University of California Berkeley, USA
dc.descriptionAlain Alonso, GIDAI, University of Cantabria, Spain
dc.descriptionCarlos Fernandez-Pello, University of California Berkeley, USA
dc.descriptionDavid Urban, NASA Glenn Research Center, USA
dc.descriptionGary Ruff, NASA Glenn Research Center, USA
dc.descriptionICES509: Fire Safety in Spacecraft and Enclosed Habitats
dc.descriptionThe 47th International Conference on Environmental Systems was held in South Carolina, USA on 16 July 2017 through 20 July 2017.
dc.description.abstractFire resistant materials are used in multiple applications (clothing, curtains, tents, etc.) were protection from a potential fire is needed. Particularly relevant for this work is the application for astronaut space suits since a spacecraft environment may be different than atmospheric ones. Furthermore, their fire resistant capacity are often tested under very specific conditions that might not represent the real fire situations. For example, when a material is exposed to a near fire or different environmental conditions like reduced pressure, enriched oxygen concentration and micro-gravity, its flammability and fire behaviors can be altered. In this work, an experimental study was performed to investigate the effect of ambient pressure and oxygen concentration on the upward flame spread over a typical fire resistant fabric (Nomex HT90-40) exposed to two different external heat sources. One is the radiation from infrared lamps and the other is the flame from a burning polymethyl methacrylate (PMMA) sheet placed below the fabric. The limiting oxygen concentration (LOC) was first quantified under different external heating, and then the upward flame-spread rate above LOC was measured. Experiments show that the flame from nearby burning object not only can ignite the fire resistant fabric, but also extend the LOC of the material to lower oxygen concentrations. Moreover, the heating from the attached flame is different from an external radiant flux. The results of this work also provide important information about the fire interactions of different materials, and guide the future fire safety design in space exploration.
dc.format.mimetypeapplication/pdf
dc.identifier.otherICES_2017_248
dc.identifier.urihttp://hdl.handle.net/2346/73041
dc.language.isoeng
dc.publisher47th International Conference on Environmental Systems
dc.subjectFire resistant
dc.subjectflame spread
dc.subjectNomex
dc.subjectPMMA
dc.subjectLOC
dc.titleConcurrent Upward Flame Spread over a Fire Resistant Fabric (Nomex) under External Heatingen_US
dc.typePresentations

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