Materials and Structures Problem-Basic Unified Engineering-Assignment, Exercises of Engineering

Problem M25

In addition to chapters 4-7 of Ashby and Jones Engineering Materials, you may also find

the chapters on polymers in Ashby and Jones, Engineering Materials 2, helpful (this is a

green covered book, available in the Aero-Astro library).

a) Define the term polymer and list three engineering polymers.

b) Define a thermoplastic and a thermoset.

c) Distinguish between a cross-linked and a non-cross-linked polymer.

d) What is the glass transition temperature?

e) Explain the change in moduli of polymers at the glass transition temperature.