Index tack Stickiness of an adhesive or filament reinforced resin prepreg material. The slope of the line at a predefined point on a static stress-strain curve, expressed in force per unit area per unit strain. This is the tangent modulus at that point in shear, tension, or compression, as the case may be. See also secant modulus. Index tape wrapped Fabric tape is heated and wrapped onto a rotating mandrel and subsequently cooled to firm the surface for the next tape layer application.
Index template A pattern used as a guide for cutting and laying plies.
The term generally used in yarn manufacture and textile engineering to denote the strength of a yarn or of a filament of a given size. Numerically, it is the grams of breaking force per denier unit of yarn or filament size. Grams per denier is expressed as gpd. Maximum tensile strength in ksi. The normal stress caused by forces directed away from the plane on which they act.