Material Classification and Properties #1

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Across
  1. 3. properties Properties of a material that involve the relationship between stress and strain or a reaction to an applied force.
  2. 4. The ability of a material to be changed in shape permanently.
  3. 5. point The temperature a material transforms from a solid into a liquid.
  4. 10. ability of a material to resist the propagation of cracks.
  5. 12. materials Materials that have been designed to have one or more properties that can be modified when subject to an external stimulus in a way that the output can be controlled. This modification (change) is reversible and can be repeated.
  6. 13. This refers to a smart material comprised of two dissimilar conductors that produce an electric current when heated.
  7. 14. A cloth or woven fabric material.
  8. 16. conductivity The measure of how fast heat is conducted through a slab of material with a given temperature difference across the slab.
  9. 17. properties Any property that is measurable and that describes a state of materials, including density, thermal expansion, thermal conductivity, melting point, electrical resistivity and electrical conductivity. These properties tend to be the characteristics of materials that can be identified through non-destructive testing.
  10. 18. (lumber) Wood harvested from trees prepared for use in manufacturing, construction and carpentry. Categorized as softwoods and hardwoods depending on the type of tree it is sourced from.
Down
  1. 1. A property of a smart material. A piezoelectric material gives off a small electrical discharge when deformed and experiences an increase in its volume when an electrical current passes through it.
  2. 2. A property of a smart material. A photochromic material changes colour in response to an increase in light. When the light source is removed, it returns to its original colour.
  3. 6. Synthetic materials made from chemical compounds commonly referred to as “plastics”.
  4. 7. (food safe) A chemical property of a material that represents the extent to which a material will react with another (including air) to become unsafe for use to come in contact with food.
  5. 8. memory material A material that “remembers” and returns to a predefined shape after being deformed. This is achieved in response to changes in temperature or stress.
  6. 9. strength The ability of a material to withstand pulling forces.
  7. 11. A material’s ability to resist deflection (bending deformation) and maintain its shape.
  8. 13. expansion A measure of the degree of increase in dimensions (length, area or volume) when an object is heated.
  9. 15. materials Materials that occur in the natural world.