Quiz: Section 1.1 Introduction

1. A steel wire will generally have __________ order of Young’s modulus than the bulk steel it is made from.

2. Where are advanced composites primarily used?

3. A steel wire will generally have __________ order of strength than the bulk steel it is made from.

4. One of the major drawbacks of composites is

5. What is the largest ingredient in glass fibers?

6. What is the unit of fracture toughness in the SI system?

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

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

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

10. What is the definition of specific modulus?