A Quartz Lamp Bank for the Characterization of Thermally Protective Materials
Technical rept. Jan 1971-Feb 1972
DAYTON UNIV OH RESEARCH INST
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The report is an operational description of a quartz tube, tungsten filament lamp bank developed for the characterization of nonmetallic thermal protection materials for high irradiance environments. The quartz lamp bank is a highly versatile apparatus for providing irradiances of up to 60 Calsq cm-sec for various specimen configurations of up to 80 square inches in surface area. The three operational modes consist of a a pre-set irradiance level, b precise regulation in a closed-loop network including a sensing radiometer, and c regulation over a programmed irradiance history. Air jets, a high velocity exhaust, and pressurized components are used to avoid lamp overheating and minimize contamination of critical components by pyrolysis gases emanating from irradiated materials. The quartz lamp bank has proven to be an adaptable and versatile tool in the exploratory research and development of a variety of nonmetallic thermal protection materials. The classes of characterized materials currently consist of camouflage coatings, fire protection elastomers and textiles, and protective coatings for components subject to thermonuclear irradiance.
- Miscellaneous Materials
- Safety Engineering
- Test Facilities, Equipment and Methods