DETERMINATION OF TEMPERATURE DISTRIBUTION IN WOOD WITH VARIABLE SURFACE TEMPERATURE BY NUMERICAL INTEGRATION OF DUHAMEL'S INTEGRAL.
FOREST PRODUCTS LAB MADISON WIS
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A numerical method is developed to determine the temperature distribution in homogeneous semi-infinite or thick-walled solids when the temperature of one surface varies with time. A computer program is given in FORTRAN language for the determination of the temperature distribution in the solid and illustratively applied to wood that is subjected to standard fire conditions ASTM E-119 at the surface. The results are presented graphically. It appears that the method developed can be applied with confidence to surface time-temperature functions of other materials. Author