MaterialsandStructures

Stress, strain, stiffness and failure, taught through the parts they decide. Ends with a structural test you can predict the outcome of.

The chapter and lesson structure below is real and final. Lesson content is still being written, so nothing here opens yet — and there is no sign-in, no progress and no completion tracking, because none of that is built.

1. 01

   Stress and strain

   The two quantities everything else is built on.

   1. ReadForce is not the whole storyWhy area matters, and what a stress-strain curve is telling you.8m
   2. VisualisePull a specimen apartLoad a coupon and watch elastic become plastic become fracture.10m
2. 02

   Choosing a material

   Trade-offs between strength, stiffness, weight, cost and fatigue.

   1. ReadNothing is best at everythingReading a material property chart the way an engineer does.9m
   2. ApplySpecify a bracketGiven the loads and the environment, choose and justify.12m