- Author
-
Heskestad, G.
- Title
- Ease of ignition of Fabrics Exposed to Flaming Heat Sources. Third Quarterly Progress Report.
- Coporate
- Factory Mutual Research Corp., Norwood, MA
- Sponsor
- National Bureau of Standards, Washington, DC
- Report
-
FMRC Serial 19967; RC72-TP-23,
October 1, 1972,
39 p.
- Keywords
-
fabrics
|
ease of ignition tester
|
heat sources
|
ignition time
|
convective heat transfer
|
diffusion flames
|
premixed flames
|
skin (human)
|
melting
|
exposure
- Abstract
- Progress made during the third quarter of the two-phase program is described. The first phase, which is concerned with the effect of the exposure mode on ignition times of fabrics, has now been completed. Except for two surface-structured fabrics, the results imply that an ignition time ranking of the 20 GIRCFF fabrics is preserved through a series of exposure modes consisting of cominbations of flame sources and fabric orientations, provided the ignition times have been minimized with respect to fabric-flame source separations. Results to date are consistent with the hypothesis that, for a given fabric, the convective heat transfer from the flame to the fabric is the dominant factor determining ignition time.