Quantcast Glossary -Cont. - 1013_120332

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MIL-HDBK-1013/12
Plate:  a group of glazing plies which have the same mechanical
properties.  Ply thickness may vary and interlayers are ignored.
Plate Glass:  flat glass formed by a rolling process, ground and
polished on both sides, with surfaces essentially plane and
parallel.
Positive Phase Duration:  the interval during the blast event in
which the pressure at a point is higher than the ambient
atmospheric pressure.
PVB:  polyvinyl butyral interlayer material used to bond glass to
glass.
Reflected Impulse:  the impulse measured at the surface of a
rigid object as a result of normal incidence with a blast
pressure wave.
Reflected Overpressure:  the overpressure measured at the surface
of a rigid object as a result of normal incidence with a blast
pressure wave.  The reflected overpressure is often referred to
as face-on overpressure.
Scratch-Resistant Coating:  coating applied to glazing surfaces
to reduce the effects of frictive contact.
Sealant:
compound used to fill and seal a joint or opening.
Side-On:
see "incident overpressure" and "incident impulse."
Shore Hardness:  measure of firmness of a compound by means of a
Durometer Hardness Gauge.
Stop, Removable:  the removable molding or structural element of
the glazing channel that retains the lite or panel in place.
Stop, Stationary:  the lip of a glazing channel or rabbet which
is a  permanent structural element of the frame and retains the
glazing within it.
Surfaces:  surfaces of a glazing laminate are counted from the
exterior (threat) face to the interior (protected) face.
Symmetrical:  a term used to describe a laminate comprised of
glass, polycarbonate, and interlayer constructed so that all
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