TECNOLOGIA

TECNOLOGIA

1. Propietats

   • Strength (resistència)
     • capacity of a material suporting forces. (metal)
   • Toughness (tenacitat)
     • material that does not break when reciving a sudden shock. (glass)
   • Elasticity
     • materia that deforms when a force is applied. (rubber)
   • Plasticity
     • Ductility
       • ability of a material to deform under tenile stress. (steel)
     • Malleability
       • ability of a material to deform under compressive stress. (gold)
   • Hardness (duresa)
     • ability of a material to resist scratching, being cut or perfored. (diamond)

2. Stress

   • Tension
     • when an object is pulled with two forces, acting in diferent directions. (cables)
   • Compression
     • when an object is pushed with two diferent forces acting in opposite direction. (columns)
   • Flexion
     • an object, one in under compression and the other under tension. (beams)
   • Torision
     • when an object is twisted by the action of two diferent forces.
   • Shear (cisallament)
     • two opposite forces act in the same part of the object, trying to cut it