Usually placed at the knuckle joints of cylinder to dome. In filament winding, the portion of a cylindrical container that forms the spherical or elliptical shell ends of the container. In filament winding, a local area with extra wound or fabric reinforcement, wound integrally with the part, or wound separately and fastened to the part. The angle of a taper on a mandrel or mold that facilitates removal of the finished part. The taper or slope of the vertical surfaces of a mold designed to facilitate removal of molded parts.
Index drape The ability of a fabric or prepreg to conform to a contoured surface.
Index drawn fiber Fiber with a certain amount of orientation imparted by the drawing process by which it was formed. Index dry laminate A laminate containing insufficient resin for complete bonding of the reinforcement. Index dry windin g A term used to describe filament winding using preimpregnated roving, as differentiated from wet winding, where unimpregnated roving is pulled through a resin bath just before being wound onto a mandrel. Index ductility The amount of plastic strain that a material can withstand before fracture. Also, the ability of a material to deform plastically before fracturing.