Quiz: Section 1.1 Introduction

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

2. Where are advanced composites primarily used?

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

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

5. One of the major drawbacks of composites is

6. 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?

7. What is the definition of specific modulus?

8. The area of the fiber-matrix interface for a fixed volume of fibers in a composite is inversely proportional to the d^p, where  is the diameter of the fiber. What is the value of ^p?

9. A composite is structural material?  What is it defined as? (Choose most appropriate answer)

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