Quiz: Section 1.1 Introduction

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

2. 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?

3. What is the definition of specific modulus?

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

5. Other than Young’s modulus, what does the flexibility of a circular rod depend on?

6. What is the largest ingredient in glass fibers?

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

9. Composites are easy to repair.

10. One of the major drawbacks of composites is