Accession Number : AD0268752

Title :   A FLASH METHOD FOR DETERMINING THERMAL DIFFUSIVITY OVER A WIDE TEMPERATURE RANGE

Corporate Author : NAVAL RADIOLOGICAL DEFENSE LAB SAN FRANCISCO CALIF

Personal Author(s) : JENKINS,R.J. ; PARKER,W.J.

Report Date : JUN 1961

Pagination or Media Count : 1

Abstract : A m oasuring the thermal diffusivity, heat cap city, and thermal conductivity is de insithortration light puls is ab orbed het ace a thermally insulated specimen a few millimeters thick coated with camphor black, and the resulting tempr ture history of the rear surf ce is ea b thermocouple a recorded with an oscilloscope and camera. The thermal diffusivity is determine by th shape of the temperature versus timervthrace the h t capaci y by the m ximum temperature indicated by the thermocouple; and the thermal conductivity by the product of the heat capacity, thl usiy, an the density. These 3 thermal propertie are determined for Cu, Ag, Fe, Ni, Al, Sn, Zn, and some alloys at 20 and 135 C and mparithio reporte values. Thermal diffusivity data are also reported for 12 differtyof snlessteelver the temperature range fro 20 100 th0

Descriptors :   *THERMAL CONDUCTIVITY, *THERMAL DIFFUSION, ALLOYS, ALUMINUM, COPPER, IRON, METALS, NICKEL, SILVER, STAINLESS STEEL, TEST METHODS, TIN, ZINC

Distribution Statement : APPROVED FOR PUBLIC RELEASE