Quiz: Section 1.1 Introduction

1. Specific modulus is given by

2. What is the largest ingredient in glass fibers?

3. The most common advanced composites are

4. What fiber factors contribute to the mechanical performance of a composite?

5. Fibers are of thin diameter because they have ______________ than the bulk material

6. One of the major drawbacks of composites is

7. The lightest mass required to have minimum deflection in a beam with a bending load depends on the ratio E^a/ρ (E=Young’s modulus, ρ=density). What is the value of a?

8. Where are advanced composites primarily used?

9. Reducing one pound of mass in a commercial aircraft can save up to how many gallons per year?

10. Primary material selection parameters for metals are strength, affordability, corrosion resistance, and formability. What are the other two?