We determined the flamespread variability of four wood composite panel products that were being considered as possible standard reference material. We examined the effect of density, moisture content, heating rate, thermal conduc tivity, and specific heat on this variability. Of these, density has the greatest ef fect on variability. Of the four types of materials tested, material C had one of the smallest density variabilities. We recommend that this material be used in ASTM E 84 tests to establish its use as a standard reference material for flame spread tests, and that material selection and statistical design procedures outlined in this paper be followed.
"Standard Test Method for Surface Burning Characteristics of Building Materials," ASTM E 84-79a, ASTM, Philadelphia, PA (1984).
2.
Cali, J.P., Mears, T.W., Michaelis, R.E., et al., "The Role of Standard Reference Materials in Measurement Systems," NBS Monograph 148, U.S. Department of Commerce, National Bureau of Standards, Washington, D.C. (January 1975).
3.
"Standard Test Method for Surface Flammability of Materials Using a Radiant Heat Energy Source," ASTM E 162-78, ASTM, Philadelphia, PA (1981).
4.
"Standard Test Method for Surface Flammability of Building Materials Using an 8-Foot Tunnel Furnace," ASTM E 286-69 (reapproved 1975, ASTM, Philadelphia, PA ( 1975).
5.
Holmes, Carlton A. and Chudnoff, Martin , "Candidate Wood-Based Standard Reference Material for Fire Testing—Red Oak," Res. Pap. FPL 404, U.S. Department of Agriculture, Forest Service, Forest Products Laboratory, Madison, WI (1981).
6.
Groah, William J., "A Study of Certain Operating and Material Variables of the 25-Foot Tunnel Flamespread Test,"Forest Products Journal, 23(12), pp. 39-45 (1973).
7.
"Standard Test Method for Steady-State Thermal Transmission Properties by Means of the Heat Flow Meter," ASTM C 518-76, ASTM, Philadelphia, PA (1976).
8.
Lewis, Wayne C., "Thermal Conductivity of Wood-Base Fiber and Particle Panel Materials," Res. Pap. FPL 77, U.S. Department of Agriculture, Forest Service, Forest Products Laboratory, Madison, WI (1967).
9.
Ward, Robert J. and Skaar, Christen, "Specific Heat and Conductivity of Particleboard as Functions of Temperature,"Forest Products Journal, 13(1), pp. 31-38 (1963).
10.
Beall, F.C., "Specific Heat of Wood—Further Research Required to Obtain Meaningful Data," Res. Note FPL-0184, U.S. Department of Agriculture, Forest Service, Forest Products Laboratory, Madison, WI (1968).
