Evaluation of Barrier Materials: Metal Alloys, Fibers, and Plates.
Technical research rept.,
FRANKFORD ARSENAL PHILADELPHIA PA
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The resistance of various commercially available lightweight materials to CO2 laser damage was examined. Five samples were supplied for laser evaluation 1 D242, a needle punched and rolled alloy fiber, 2 304SS stainless steel fibers web sintered and rolled, 3 430SS, a stainless steel sinter on hard backing, 4 FM515 with Inconel 600 backing, and 5 a graphite woven cloth. A 100 W CO2 laser beam was focused to provide various irradiance levels up to 6.7 KWsq cm. These samples may be exposed safely at about 20 wattssq cm. For kilowatt level exposures, dark finished samples are more robust than bright finished samples of the same material. At 6.7 KWsq cm, all materials are penetrated in less than one second with the exception of 430SS and DH242 wet with water. Author
- Metallurgy and Metallography