AFAB 120 CHAPTER 2 EXAM QUESTIONS AND ANSWERS

AFAB 120 CHAPTER 2 EXAM
QUESTIONS AND ANSWERS

Which reinforcing fiber weighs more than most other composite fibers, but has less
strength? - Answer-Fiberglass

Warp designated as ___________ degrees - Answer-0 degrees

Bias designated as ___________ degrees - Answer-45 degrees

Fill/Weft designated as ____________ degrees - Answer-90 degrees

What are the most common weaves used in advanced composite aircraft construction. -
Answer-plain and satin weaves

The fiber material is stronger in which direction and why - Answer-warp direction than
the weft (fill) direction
Because the warp direction is often critical in fabricating or repairing composites

What is a hybrid? - Answer-methods that combine fiber glass and another fiber can
make a hybrid material


Three common reinforcing fibers - Answer-Fiberglass Fiber
Aramid Fiber
Carbon/Graphite Fiber

Fiberglass Fiber disadvantages - Answer--less strength,
-weighs more
-fuzzes

Carbon/Graphite Fiber disadvantages - Answer--corrosive next to aluminum
-Is More Brittle Than Kevlar
- expensive

Aramid Fiber disadvantages - Answer--Stretches and Very Hard To Cut
-Very Difficult To Drill
-Gets "Fuzzy" Around Drill Holes
-Absorbs Moisture if Not Sealed