Mechanical Properties of Solids - Greg Wilkinson

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Author:
McAuley
ID:
175692
Filename:
Mechanical Properties of Solids - Greg Wilkinson
Updated:
2012-10-05 05:10:57
Tags:
Physics Mechanical Properties Solids Greg Wilkinson
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Flashcards for The Mechanical Properties of Solids
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  1. Define A Brittle Material.
    • If you apply a force to a brittle material, it won't deform plastically, but will suddenly snap when the force gets to a certain size.
    • E.g. A chocolate bar.
  2. Define A Ductile Material.
    • You can change the shape of ductile materials by drawing them into wires or other shapes. The important thing is they keep their strength when they are deformed like this.
    • E.g. Ski lift wires.
  3. Define a Malleable Material.
    • The shape of malleable can be changed fairly easily by for example; hammering or rolling. however they will not necessarily keep their strength.
    • E.g. Gold
  4. Define a Hard Material.
    • If you try to cut, dent or scratch a hard material, it would probably have very little effect. Hard materials are resistant to cutting, indentation and abrasion.
    • E.g. Diamond
  5. Define a Stiff Material.
    • Changing the shape of stiff materials is really difficult as they are resistant to both bending and stretching. stiffness is measured by youngs modulus - the higher the value, the stiffer the material is.
    • E.g. A safety helmet
  6. Define a Tough Material.
    • Tough materials are really hard to break. it is a measure of how much energy they can absorb before breaking.
    • E.g. A Kayak.
  7. Youngs modulus :E = FL        
                                  AX 

    F = ?                      
    • F = EAX
    •        L
  8. Youngs modulus :E = FL  
                                  AX 
    A = ?
    • A = FL  
    •       EX
  9. Youngs modulus :E = FL 
                                  AX
    L= ?
    • L = EAX
    •        L

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