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design technology > composites > Flashcards

composites Flashcards

1
Q

what is a composite material

A

composed of two or more different materials resulting in a material that has enhanced properties

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2
Q

how many composites are there

A

8

CFRP
GRP
aluminium composite board
concrete
tungsten carbide
reinforced concrete
fibre cement
engineered wood

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3
Q

what is CFRP made of

A

carbon fibres mixed with polyester resin

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4
Q

CFRP properties include

A

lightweight
corrosion resistant
hard
tough
good compressive strength
low thermal expansion

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5
Q

CFRP uses

A

bicycle frames,
tennis racquets
fishing rods
racing car bodies
helmets

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6
Q

what is GRP made of

A

glass fibres mixed with polyester resin

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7
Q

GRP properties

A

lightweight
corrosion resistant
hard
tough
good compressive strength
low thermal expansion

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8
Q

GRP uses

A

pond liners
sports car bodies and parts
kayak shells
boat hulls

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9
Q

what is tungsten carbide made of

A

ceramic tungsten and cobalt metal

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10
Q

Tungsten carbide properties

A

hard
tough
resistant to high temperatures
corrosion resistant

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11
Q

tungsten carbide uses

A

cutting tools eg,
drill bits
kitchen knives
router bits

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12
Q

what is aluminium composite board made of

A

aluminium and polyethelyne

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13
Q

aluminium composite board properties

A

lightweight
rigid
tough
malleable
good thermal/sound insulation
good vibration damping

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14
Q

aluminium composite board uses

A

soundproofing in cars, buildings and boats
signage

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15
Q

what is concrete made of

A

cement powder, sand, aggregate particles mixed with water

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16
Q

concrete properties

A

high compression strength
low tensile strength
few surface defects
easy to mould

17
Q

concrete uses

A

pathways
beams
blocks
driveways

18
Q

what us reinforced concrete made of

A

cement, sand, aggregate particles with low carbon steel rods and water

19
Q

reinforced concrete properties

A

good compression strength
good tensile strength
few surface defects
fire resistant

20
Q

reinforced concrete uses

A

buildings
bridge spans
grid floors
retaining walls

21
Q

what is fibre cement made of

A

cement, sand, aggregate particles, polymer or steel fibres with water

22
Q

fibre cement properties

A

lighter than reinforced concrete
hard
tough
good at low temperatures

23
Q

fibre cement uses

A

suspended floors
complex geometric shapes
pathways

24
Q

engineered wood is made of

A

timber laminates and MF adhesive

25
Q

engineered wood properties

A

aesthetics
natural alternative to concretes
lightweight compared to concretes
fire resistant
good structural stability
corrosion proof

26
Q

engineered wood uses

A

beams
bridges
domes
arches
decking
roof beams

design technology (15 decks)

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