Definitions /Dictionary/Glossary - nptel
Definitions /Dictionary/Glossary - nptel
Definitions /Dictionary/Glossary - nptel
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Ease of Rollout: The relative facility with which a sprayed admixture of chopped glass<br />
and resin can be compacted by rolling.<br />
E-Glass: "Electrical glass" A borosilicate glass; the type most used for glass fibers for reinforced<br />
plastics; -suitable for electrical laminates because of its high resistivity. It is also called<br />
‘electrical glasses.<br />
Edge Joint: It is a joint made by bonding the edge faces of the two adherends.<br />
Ejection / Demolding: The process of removing a molding from the molding impression; by<br />
mechanical means, by hand, or by the use of compressed air.<br />
Ejection Plate: A metal plate used to operate ejector pins; designed to apply a uniform pressure<br />
to them in the process of ejection.<br />
Elastic Deformation: The part of the total strain in a material under stress that recovers upon<br />
removal of the stress.<br />
Elastic Limit: The greatest stress which a material is capable of sustaining without permanent<br />
strain remaining upon the complete release of the stress. A material is said to have passed its<br />
elastic limit when the load is sufficient to initiate plastic, or non-recoverable, deformation.<br />
Elasticity: The property of a material which allows it to recover its original size and shape<br />
immediately after removal of the force causing deformation.<br />
Elastomer: A polymeric material which has a high modulus of elasticity and toughness.<br />
Urethane elastomer is an example.<br />
Elongation: The increase in gage length or extension of a specimen during a tension test, usually<br />
expressed as a percentage of the original gage length.<br />
Elongation at Break: Elongation recorded at the moment of rupture of the specimen, often<br />
expressed as a percentage of the original length.<br />
Eluate: The liquid emerging from a column (in liquid chromatography).<br />
Eluent: The mobile phase used to sweep or elute the sample (solute) components into, through,<br />
and out of the column.<br />
Encapsulating: Enclosing an article in a closed envelope of plastics by immersion. Milled fibers<br />
or short chopped strands are often poured with the catalyzed resin into open molds for casting<br />
electrical components.
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