Definitions /Dictionary/Glossary - nptel

Censoring: Data is right (left) censored at M, if, whenever an observation is less than or equal to
M (greater than or equal to M), the actual value of the observation is recorded. If the observation
exceeds (is less than) M, the observation is recorded as M.
Centipoise: Measurement of viscosity as compared to water (1 centipoise).
Ceramic: A rigid, frequently brittle material made from clay and other inorganic, non-metallic
substances and fabricated into articles by sintering i.e. cold molding followed by fusion of the
part at high temperature.
Ceramic-Matrix Composites (CMC): Materials consisting of a ceramic or carbon fiber
surrounded by a ceramic matrix, usually SiC (silicon carbide).
Cermet: -Composite materials consisting of two constituents, one is an oxide, carbide, boride or
similar inorganic compound and the other a metallic binder.
Chemical Vapor Deposition (CVD): A process in which the reinforcement material is
deposited from vapor phase onto a continuous core such as boron or tungsten.
Chain-Growth Polymerization: One of the two principal polymerization mechanisms. In chain
growth polymerization, the reactive groups are continuously regenerated during the growth
process. Once started, the polymer molecule grows rapidly by a chain of reactions emanating
from a particular reactive initiator which may be a free radical, cat-ion or anion.
Chalking: Dry, powder-like appearance or deposit on gel coat surface.
Chemical Vapor Deposition (CVD): A process in which desired reinforcement material is
deposited from vapor phase onto a continuous core; boron on tungsten, for example.
Chromatogram: A plot of detector response against peak volume of solution (Eluate) emerging
from the system for each of the constituents which have been separated.
Chopped Strand: It is a continuous strand yarn or roving cut up into uniform lengths, usually
from 1/32-2" long. Lengths up to 1/8" are called milled fibers.
Chopper Gun: It is a special piece of equipment used in the manufacture of reinforced plastic
parts, which chops glass and sprays resin and catalyst simultaneously onto a molded surface.
Circuit: One complete traverse of the fiber feed mechanism of a winding machine; one complete
traverse of a winding band from one arbitrary point along the winding path to another point on a
plane through the starting point and perpendicular to the axis.
Circuit: One complete traverse of the fiber feed mechanism of a filament-winding machine.