AERM 1254 AC Composites Questions With Correct Answers

AERM 1254 AC Composites Questions With Correct Answers
adhesion - ANS-is the tendency of different molecules or surfaces to cling to each other. a force that
causes a material to stick to some other material
adhesive - ANS-a substance capable of holding materials together by attachment to each surface - can
be liquid, film, or paste.
adhesive film - ANS-premixed adhesives cast into a thin plastic film, and used to bond to a surface.
requires refrigerated storage.
advanced composites - ANS-a fibrous material embedded in a resin matrix. the term advanced applies to
those materials which have superior strength and stiffness and the process in which they are
manufactured
bagging film - ANS-an impermeable layer of film that is placed over an uncured part and sealed around
the edges so that a vacuum can be drawn
bi-directional cloth - ANS-a cloth in which the fibers run in various directions. usually woven together in
two directions.
bleeder - ANS-a layer of material used during the manufacture or repair of part to allow entrapped air
and resin to escape. it is removed after curing. it also serves as a vacuum valve contact with the part.
breather - ANS-a loosely woven fabric used to provide venting and pressure uniformly under a vacuum
cure. this material is used directly under the vacuum valve to allow the air to be evacuated inside the
vacuum bagged part. it is removed after curing.
bridging - ANS-this term can refer to plies of fabric over a curved edge that doesn't come in full contact
with the core material. it is also used to describe excess resin that has formed on edges during the
curing process