1. Stress, Strain and Young's Modulus
When revising for your exams it may seem like you are under stress and strain, however, they are quite different but they do allow to investigate materials. Their ratio can also be calculated giving the Young (or Young's) modulus.
2. Stress-Strain Graphs
This video explores the four key points you would expect to see on a stress-strain graph for a typical ductile material.
3. Ductile and Brittle Materials
A short video that explain the various material properties you need to understand and identify from a stress-strain graph. From brittle substances like glass and a Crunchie to the plastic deformation of copper and a Mars bar.
4. Behaviour of Rubber
Stretch a rubber band and it doesn't behave in the same way as a metal. As it is loaded and unloaded energy is stored which then causes the rubber to heat up.