Current testing requirements for high temperature alloys are defined in general industry specifications (ASTM, AMS), as well as in user specifications. Many of these requirements were established in the 1960's when production practices were yet to be refined.
cowling - protective covering consisting of a metal part that covers the engine; there are powerful engines under the hoods of new cars; the mechanic removed the cowling in order to repair the plane's engine.
Sewing Blog. Add a Cowl Neckline for Instant Drama. A cowl is a fold or set of folds that can be placed anywhere when sewing a garment. Although you might think of cowls as belonging on a bodice front, they can really be added anywhere, including a bodice back, sleeves, or even to the sides of skirts or pants.