Resistant materials

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  • Resistant materials
    • Materials
      • Smart materials
        • Thermochromic pigment
          • React to temprature
        • There properites can change due a change in magnetic field, temprature and moisture.
      • Metals
        • Non ferrous
          • Non ferrous metals contain no iron
          • Tin
            • Soft
            • Weak
            • Bends with steel cores
            • Malleable
            • Resistant to corrosion
          • Aluminium
            • Light
            • Soft
            • Ductile
            • Good conductior of heat
            • Good conductor of electricity
          • Copper
            • Malleable
            • Ductile
            • Good conductor of heat
            • Resistant to corrosion
        • Ferrous
          • Ferrous metals contain iron
          • Cast iron
            • Brittle
            • Cant be bent
            • Hard skin
          • Mild steel
            • Tough
            • Ductile
            • Easly worked or joined
          • Stainless steel
            • Hard
            • Tough
            • Resists wear
            • Corrosion  resistant
            • Difficult to work with
      • Timber
        • Hardwood
          • Ash
          • Oak
          • Mahogany
          • Elm
          • Grow slowly over100 years
          • More expensive
          • Better grain structure
        • Softwood
          • Ceder
          • Fir
          • Pine
          • Coniferous trees
          • Grow quickly over 30 years
          • Less epensive and more readily available
          • Good constrution material
      • Adhesive
        • PVA
        • Synthetic resin
        • Epoxy resin
        • Contact adhesive
        • Acrylic cement
    • The six r's
      • Refuse
        • Issues relating to sustainable design
        • Refuse to use some types of materials
      • Reduce
        • The life cycle of a product
        • Built in obsolescence the product is built to break
        • The amount of materials wasted
      • Repair
        • Some products can be repaired and then reused
        • Some products cant be repared and have to be scraped
      • Reuse
        • The product can be reused for the same purpose or a new one.
        • The product can be adapted for a new purpose
      • Rethink
        • Can you use diffrent materials and procceses to create your product
        • Reuse old and broken products to make brand new products
      • Recycle
        • Materials that can recycled
        • The materials can be reuses from disassebled products
        • Can be used to make brand new products
    • Processes
      • Line bending
        • It invlves heating a material along a heated line.
        • The plastic softens as it is heated allowing to bend and as the plastic cools it will retain the shape.
      • injection moulding
        • Injection moulding involves heating a polymer until it is a liquid it is then forced into the mould under pressure.
        • Use thermoplasitc or thermosetting polymers.
      • Vacuum forming
        • Steps for vaccum forming
          • Step one the high impact polystyrine is heated.
          • Step two the selected shape is raised into the plastic.
          • Step three the air is then removed from the mould and is then left to set.
        • The sheet of plastic is heated to make it flexable the formed over a mould and then left to cool for it to become hard.
        • Moulds often made from wood
      • CAD
        • Computer aided design
        • Pro desktop
      • CAM
        • Computer aided manufacture
        • Laser cutter
      • Continuous flow
        • is a production where mant thousends of i dentical products are made non stop
      • Batch production
        • Is when a small quantity of identical products are made
      • Mass production
        • is when hundreds of identical products are made ussually on a production line.
      • One-off production
        • Is when only one product is made  a time
      • Soldering
        • Soldering is a type of brazing which works at lower tempratures
        • Soft soldering
          • is used to make permanent joints between copper, brass, tin-plate or light steelwork, and is normally used to join components to electronic circuit boards
        • Hard soldering
          • is used for stronger joints
      • Brazing
        • It bonds two pieces of metal by melting a filler metal or alloy between the components
      • Welding
        • Two pieces of metal are melted along the selected joint which the fuse together as they cool
    • Drawing techniques
      • 3rd angle orthographic
      • 2 point perspective
      • 1 point perspective
      • Isometric
    • Joining wood
      • Screws
      • Nails
      • Knock down joints
        • these joints are commonly used in flat-pack furniture, which is assembled by the customer at home
      • Butt joint
      • Box joint
      • Coner halfing
      • Housing joints
    • Working properties
      • Hardness
        • is the ability of a material to resist wear,scatching and indentation
      • Toughness
        • is the ability of a material to withstand blows or sudden shockswithout breaking
      • Conductivity
        • is the ability of a material to conduct heat or electrical energy
      • Strength
        • is the ability of a material to withstand a forse without breaking of bending

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