Question

composite material design: please solve all

1-Name two types of fibers and give the main advantage of each. The advantages have to be different so that the two types of fibers differ from each other.

2 -Compute the cross-sectional area occupied by a 36K tow of carbon fiber, with a fiber diameter of 7 microns?

3- Compute the cross-sectional area occupied by a roving of fiberglass with a Yield of 56 yards/lb . How many 112 Yield roving are needed to obtain the same cross-sectional?

4- Do PMC operate at temperatures ( a) below . (b ) at, or (e) above the glass transition temperature ?

5- Compare the flerural modulus and strength at 249 degrees * C * (dry) of clear cast bismaleimide 792 / (TM) - 123 with an extrapolation of the room temperature data using the retention?

Answer 1

1) Fiber types: Glass fibers :advantage- low cost

Carbon fibers: advantage-high stiffness