TECHNOLOGIES U.2

TECHNOLOGIES U.2

1. PROPERTIES OF MATERIALS

   • Environmental properties
   • Physical properties
     • conductivities
       • electrical
       • thermal
       • sound
     • thermal expansion
   • Sensory properties
     • transparent
     • translucent
     • opaque
   • Mechanical properties
     • hardness
     • deformability
     • toughness
     • ductility
     • malleability
   • Chemical properties

2. HOW WE OBTAIN WOOD

   • 1. Felling
   • 2. Debarking
   • 3. Transport to the sawmill
   • 4. Sawing for end use
   • 5. Drying
   • 6. Cleaning, planing and sanding
   • 7. Treatments and finishes

3. COMMON MATERIALS

   • Natural materials
   • Processed materials
   • Technical materials
     • woods
     • metals
     • textiles
     • plastics
     • construcction materials
   • Raw materials
     • animal
     • plant
     • mineral

4. UNDESIRABLE PROPERTIES OF WOOD

   • combustion
   • rotting and insect attack
   • moisture