An Arc Imaging Furnace for the Characterization of Thermally Protective Materials.
Final technical rept.,
DAYTON UNIV OHIO RESEARCH INST
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An ADL-Strong arc imaging furnace was modified for ablation investigations of protection materials in thermal radiation environments. Radiances up to 180 calsq cm-sec were generated over an irradiance zone of 9 mm diameter. Proportionately lower fluxes were also obtained over larger zones, e.g., up to 254 mm in diameter. Significant improvements were made in irradiance exposure times through the use of solid state timing and control device involving automatic sequencing at both the shutter and dowser. The modified arc image furnace was also shown to be useful for investigating materials in contamination-free environments involving vacuum, air or inert gas. The arc imaging furnace was demonstrated to be a versatile tool for research on thermal protection materials, such as fire protection fabrics and coatings, thermal flash resistant coatings, heat resistant paints, ablators, and for the study of crystalline materials at high heating ratings. Modified author abstract
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