AFAB120 questions with complete
solutions A+ rated
Limitations of heat blankets - correct answer ✔✔ *Be careful not to flex a flat blanket too much,
*oversized blankets may draw too much current for a machine to handle. *Use heat blankets
that are the same size and use the same wattage.
3 common types of reinforcing fibers - correct answer ✔✔ fiber glass , aramid and carbon fiber
three common types of fiber glass - correct answer ✔✔ e-glass, s-glass (s2-glass), c-glass
carbon disadvantages - correct answer ✔✔ corrosive next to aluminum
common fiber terms - correct answer ✔✔ the more fiber in given direction the stronger and
stiffer
unidirectional - correct answer ✔✔ material in which all of the major fibers run in one direction,
gibing strenght in that direction
bidirectional / multidirectional - correct answer ✔✔ fibers that run in two or more directions /
45 degree
sandwich construction - correct answer ✔✔ enhances performance by placing the load carrying
fibers on the outside of the part
Quasi-isotropic - correct answer ✔✔ laminate laid up with an equal number of plies in each
orientation
, How is quasi-isotropic lay up stacked? - correct answer ✔✔ 0 degree - 45 degree, 45 degree, 90
degree
common weave pattern - correct answer ✔✔ Plain weave
plain weave - correct answer ✔✔ one over one under, most commonly used,
example; apple pie
basket weave - correct answer ✔✔ 2 over one under
Advantages of composites - correct answer ✔✔ ■ High strength to weight
■ Doesn't corrode
■ Fewer fasteners
■ Complex
honeycomb - correct answer ✔✔ high strength to weight to ratio, flexible, can only be teared in
on one direction
L direction is strong( ribbon direction)
T is thickness
W direction is weak(where seams are)
warp - correct answer ✔✔ down the roll (0 degree) ,
material in the warp direction is stronger
threads which run the length of the fabric as it comes off the bolt
weft/fill - correct answer ✔✔ runs left to right (90 degree)
solutions A+ rated
Limitations of heat blankets - correct answer ✔✔ *Be careful not to flex a flat blanket too much,
*oversized blankets may draw too much current for a machine to handle. *Use heat blankets
that are the same size and use the same wattage.
3 common types of reinforcing fibers - correct answer ✔✔ fiber glass , aramid and carbon fiber
three common types of fiber glass - correct answer ✔✔ e-glass, s-glass (s2-glass), c-glass
carbon disadvantages - correct answer ✔✔ corrosive next to aluminum
common fiber terms - correct answer ✔✔ the more fiber in given direction the stronger and
stiffer
unidirectional - correct answer ✔✔ material in which all of the major fibers run in one direction,
gibing strenght in that direction
bidirectional / multidirectional - correct answer ✔✔ fibers that run in two or more directions /
45 degree
sandwich construction - correct answer ✔✔ enhances performance by placing the load carrying
fibers on the outside of the part
Quasi-isotropic - correct answer ✔✔ laminate laid up with an equal number of plies in each
orientation
, How is quasi-isotropic lay up stacked? - correct answer ✔✔ 0 degree - 45 degree, 45 degree, 90
degree
common weave pattern - correct answer ✔✔ Plain weave
plain weave - correct answer ✔✔ one over one under, most commonly used,
example; apple pie
basket weave - correct answer ✔✔ 2 over one under
Advantages of composites - correct answer ✔✔ ■ High strength to weight
■ Doesn't corrode
■ Fewer fasteners
■ Complex
honeycomb - correct answer ✔✔ high strength to weight to ratio, flexible, can only be teared in
on one direction
L direction is strong( ribbon direction)
T is thickness
W direction is weak(where seams are)
warp - correct answer ✔✔ down the roll (0 degree) ,
material in the warp direction is stronger
threads which run the length of the fabric as it comes off the bolt
weft/fill - correct answer ✔✔ runs left to right (90 degree)
