TY  - JOUR
PY  - 2009//
TI  - Absorption of thermal energy in PMMA by in-depth radiation
JO  - Fire safety journal
A1  - Jiang, Fagang
A1  - Khan, Mohammed M.
A1  - de Ris, John L.
SP  - 106
EP  - 112
VL  - 44
IS  - 1
N2  - An experimental technique is developed to quantify the absorption of thermal energy in black PMMA (Polycast) by in-depth radiation in semi-transparent media. In-depth heating occurs when non-reflected incident heat flux enters the solid without first being absorbed at the exposed surface. Transient conduction due to temperature gradients occurs within the solid in response to this in-depth absorption. An analytical model is developed for predicting time to ignition for such in-depth heating situations. Using the measured absorption coefficient,κ, the analytical prediction for time to ignition is found to be in excellent agreement with data from experiments of Saito and Delichatsios. <p />
LA  - 
SN  - 0379-7112
UR  - http://dx.doi.org/10.1016/j.firesaf.2008.04.004
ID  - ref1
ER  -