Page 188 - Mechanical Behavior of Materials

Problems and Questions 189

4.40 You are an engineer designing pressure vessels to hold liquid nitrogen. What general
characteristics should the material to be used have? Of the various types of materials tests
described in this chapter, which would you employ to aid in selecting among candidate
materials? Explain the reason you need each type of test chosen.
4.41 Answer the questions of Prob. 4.40, where you are instead designing plastic motorcycle
helmets.
4.42 Answer the questions of Prob. 4.40, where you are designing the femoral stem part of a hip
prosthesis. Note that the lower end of the stem projects into the bone, and the upper end holds
the metal femoral head (ball).