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AS Product Design > Composite Materials > Flashcards

Composite Materials Flashcards

1
Q

What is a composite material?

A

A composite material is a mixture of two or more different materials that enhance each others properties.

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2
Q

What are the 3 main groups of composite materials?

A
  • Fibre-reinforced composites
  • Particle-based composites
  • Sheet-based composites
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3
Q

Name some Fibre-reinforced composites

A
  • Natural woods
  • Polymer mixed with fibres
  • GRP
  • Plastic laminates
  • Carbon fibre
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4
Q

Name some Particle-based composites

A
  • Cermets
  • Tungsten carbide
  • Concretes
  • Tarmac
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5
Q

Name some Sheet-based composites

A
  • Plywood
  • Blockboards
  • Chipboard
  • Sterling board
  • MDF
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6
Q

Name some Man-made boards

A
  • Plywood
  • MDF
  • Chipboard
  • Block board
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7
Q

What are the common uses of Plywood?

A

Backs of furniture e.g. cabinets, bottom of draws.

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8
Q

What are the common uses of Block board?

A

Table tops.

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9
Q

What are the common uses of Sterling board?

A

Flooring for sheds and workshops.

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10
Q

What are the common uses of Chip board?

A

Knockdown furniture, kitchen cupboards.

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11
Q

What are the common uses of MDF?

A

Furniture sides.

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12
Q

What are the common uses of Hardboard?

A

Backs of cupboards and drawer bottoms.

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13
Q

What is Kevlar a mixture of?

A

Aromatic and aramid molecules.

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14
Q

How does Kevlar work?

A

Kevlar fibers are woven into a cloth which can be fashioned into protective equipment, it acts like a net which absorbs all the force.

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15
Q

Name some uses of Kevlar.

A
  • Body protection
  • Sports equipment like skis and helmets
  • Sails for wind surfing
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16
Q

What are the properties of Kevlar?

A
  • High strength to weight ratio
  • Low electrical conductivity.
  • High chemical resistance
  • High toughness
  • High cut resistance
  • Flame resistance
17
Q

Name 3 typical fibre-reinforced composites

A
  • GRP (Glass Reinforced Plastic)
  • Carbon Fibre
  • Kevlar
18
Q

What are the common uses of GRP?

A

vehicle bodies like boat hulls or canoes.

19
Q

What are the common uses of Carbon fibre?

A

Sports equipment and bike frames

20
Q

What are the common uses of Kevlar?

A

Body Armour

21
Q

What is reinforced concrete?

A

reinforced concrete is concrete which has been modified to withstand more tension, by adding a metal reinforcing rod in the middle of the concrete.

22
Q

What are the general characteristics of Particle-based composite materials?

A
  • High strength in compression
  • Good stability
  • Uniform structure ensuring constant strength
  • Generally free from surface defects
23
Q

What is concrete made out of?

A

Concrete is made up of aggregates, sand and cement

24
Q

What are some advantages of Concrete?

A
  • Can be molded into complex shapes
  • Similar properties to stone
  • Can be cast in site
  • Good in compression
25
Q

What is a disadvantage of concrete?

A

Poor in tension

26
Q

What is a cermet?

A

A mixture of metal and ceramic particles

27
Q

Give an example of an cermet

A

Tungsten carbine

28
Q

What are some advantages of using cermets?

A
  • Resistant to high temperatures

- Tough and Shock resistant

AS Product Design (16 decks)

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