1.10 Composites

Question 1

Describe composite

Answer 1

A material comprised of two or more different materials, resulting in a material with enhance properties.

Question 2

State three properties/characteristics of CFRP

Answer 2

• Lightweight
• Corrosion-resistant
• Tough
• Hard
• Good compressive
• Strength
• Low thermal expansion

Question 3

State two uses of CFRP

Answer 3

• Sports equipment such as bicycle frames, tennis racquets, fishing rods
• Helmets
• Prosthetics

Question 4

State three properties/characteristics of GRP

Answer 4

• Lightweight
• Corrosion resistant
• Tough
• Hard
• Low thermal expansion
• Good compressive strength

Question 5

State two uses of GRP

Answer 5

• Boat hulls
• Pond liners
• Kayak
• Sports car bodies and parts
• Locomotive trains cab

Question 6

State three properties/characteristics of tungsten carbide

Answer 6

• Hard
• Tough
• Corrosion-resistant
• Resistant to high temperature

Question 7

State two uses of tungsten carbide

Answer 7

• Cutting tools such as drill bits, lathe tooltips, router bits
• Kitchen knives

Question 8

State three properties/characteristics of aluminium composite board

Answer 8

• Lightweight
• Rigid
• Tough
• Malleable
• Good thermal insulation
• Good sound insulation
• Good vibration damping

Question 9

State two uses of aluminium composite board

Answer 9

• Soundproofing panels in cars
• Buildings
• Boats
• Signage

Question 10

State three properties/characteristics of concrete

Answer 10

• High compression strength
• Low tensile strength
• Few surface defects
• Easy to mould

Question 11

State three uses of concrete

Answer 11

• Pathways
• Beams
• Blocks
• Driveways
• House foundations

Question 12

State three properties/characteristics of reinforced concrete

Answer 12

• High compression
• high tensile strength
• Consistency across the surface
• Few surface defects
• Fire resistant

Question 13

State three uses of reinforced concrete

Answer 13

• Bridges piles and spans
• Retaining walls
• Buildings
• Grid floors

Question 14

State three properties/characteristics of fibre cement

Answer 14

• Lighter in weight than reinforced concrete
• Hard
• Tough
• Good at low temperatures
• Good in freeze/thaw situations

Question 15

State two uses of fibre cement

Answer 15

• Suspended floor
• Complex geometric shapes
• Pathways

Question 16

State three properties/characteristics of engineered wood

Answer 16

• Good aesthetics
• Natural alternatives to reinforced concrete
• More lightweight than concrete alternatives
• Fire resistant
• Good structural stability
• Corrosion proof

Question 17

State two uses of engineered wood

Answer 17

• Beams
• Bridges
• Domes
• Arches
• Decking
• Roof Beams
• Rafters