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Experimental and analytical protocol for ignitabiilty of common materials
Author(s) -
Dietenberger Mark A.
Publication year - 1995
Publication title -
fire and materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.482
H-Index - 58
eISSN - 1099-1018
pISSN - 0308-0501
DOI - 10.1002/fam.810190206
Subject(s) - emissivity , ignition system , shutter , foil method , materials science , mechanics , radiative transfer , aluminum foil , lift (data mining) , nuclear engineering , thermal , environmental science , mechanical engineering , computer science , optics , composite material , engineering , aerospace engineering , meteorology , physics , layer (electronics) , data mining
In this study, a protocol was developed to increae accuracy, generality and efficiency when determining piloted ignition properties. A new procedure for calibrating the radiative and convective heat flux protiels on exposed speciments, such as Douglas‐fir plywood, has been implemented for the lateral ignition and flame spread test (LIFT) apparatus. The boundary conditions needed for heat transfer anylysis are made unambiguous by including a simple, direct measure f surface emissivity. A new aluminum foil shutter improves accuracy for measuring ignition time. A recently developed theroy of ignitanility provides a formula to account for the transition form thick to thin thermal behaior, allowing specimens of finite thicknesses and a fuln range of test irradiances.