Properties of Solids

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Author:
McAuley
ID:
175687
Filename:
Properties of Solids
Updated:
2012-10-05 04:54:59
Tags:
Physics nBehaviour Solids
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Description:
Definitions of terms that describe mechanical properties of solids.
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  1. What is the definition of 'brittle', and name a brittle material.
    • . Brittle materials break suddenly without derforming the solid physically.
    • . Brittle materials are weakened by cracks in the material.
    • . Ceramics, such as pottery and glass, are brittle materials.
  2. What is the definition of 'ductile', and name a ductile material.
    • . Ductile materials can be drawn into wires or other shapes without losing their strength.
    • . Copper is a ductile material, as it is used for electric wires.
  3. What is the definition of 'malleable', and name a malleable material.
    • . Malleable materials can change shape, but may lose their strength doing so.
    • . Gold and brass are malleable materials.
  4. What is the definition of 'hard', and name a hard material.
    • . Hard materials are very resistant to cutting, indentation and abrasion.
    • . Hardened steel and diamonds are hard materials, and they are usually used for cutting tools.
  5. What is the definition of 'stiff', and name a stiff material.
    • . Stiff materials have a high resistance to bending and stretching.
    • . Stiffness is measured by the 'Youngs modulus' (Pa).
    • . The outer protective casing of construction helmets and safety boots are stiff materials.
  6. What is the definition of 'tough', and name a tough material.
    • . Tough materials are really difficult to break.
    • . Toughness is a measure of the energy a material can absorb before it breaks.
    • . Polymers, such as polythene (the material used to build kayak hulls), is a tough material.

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