Testing materials - Reece

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Testing materials - Reece
2012-10-05 05:11:45
testing materials reece williams

testing materials
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  1. What are the six terms used to describe a solid?
    • - Brittle
    • - Ductile
    • - Malleable
    • - Hard
    • - Stiff
    • - Tough
  2. What is meant by the term brittle?
    If you apply a force to a brittle material, it WILL NOT deform plastically. However if there is enough force applied it will suddenly snap, they are also quite weak if they have cracks in them. e.g a chocolate bar is a brittle material - Break individual chunks of chocolate without the whole bar changing shape. Also ceramics (glass) shatter.
  3. What is meant by the term ductile?
    • - You can change the shape of ductile materials
    • - They keep their shape when there deformed in this way.
    • - An example of a ductile material is copper
    • - Ideal for electric wires
  4. What is meant by the term malleable?
    • - Their shape can be changed fairly easily e.g hammering or rolling
    • - Malleable materials will not keep their strength
    • - Gold is an exaple of a malleable metal
  5. What is meant by the term hard?
    They are very resistant to cutting, indentation and abrasion

    They can be used as cutting tools often made by harden steel and diamond
  6. What is meant by the term stiff?
    Stiff materials have a high resistance to bending and stretching

    Changing the shapes of stiff materials