Quiz: Section 1.1 Introduction

1. 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?

2. The most common advanced composites are

3. One of the major drawbacks of composites is

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

5. To measure normal strain experimentally by a strain gage at a point in the body, I need to know __________ of the body

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

7. What is the percentage annual growth of composites?

8. Composites are easy to repair.

9. Where are advanced composites primarily used?

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