Definitions /Dictionary/Glossary - nptel

Knitting: A method of constructing fabric by interlocking series of loops of one or more yarns.
Knuckle Area: The area of transition between sections of different geometry in a filament
wound part.
K-Sample Data: A collection of data consisting of values observed when sampling from k
batches.
L-Cell Pitch: The distance between the centers of nodes in the L direction in the expanded
honeycomb.
L-Direction: The core's ribbon direction; the direction of continuous sheets. . Lamina -A single
ply or layer, in a series of layers.
Laid-In Yarns: It is a system of longitudinal yarns in a triaxial braid which are inserted between
the bias yarns.
Lamina: A single ply or layer in a laminate.
Discussion: For filament winding, a lamina is a layer.
Laminae: Plural of lamina.
Laminate: for fiber-reinforced composites, a consolidated collection of laminae (plies) with one
or more orientations with respect to some reference direction.
Laminate (noun): Layers of a composite consisting of a resin and a reinforcement, bonded
together to form a single structure.
Laminate (verb): The act of processing resin and reinforcement into a bonded structure.
Saturating glass reinforcement and rolling out air voids is to laminate.
Laminate: To unite sheets of material by a bonding material usually with pressure and heat
(normally used with reference to flat sheets); a product made by so bonding.
Laminant: The product.
Laminate Coordinates: A coordinate system (used to describe the properties of a laminate),
generally in the direction of principal axes, when they exist.
Laminate Orientation: The configuration of a cross-plied composite laminate with regard to the
angles of cross-plying, the number of laminae at each angle, and the exact sequence of the
lamina lay-up.
Lattice Pattern: It is a pattern of filament winding with a fixed arrangement of open voids.