10-Composites

Question 1

What is a composite material?

Answer 1

• When two or more different materials are combined to form one material

Question 2

Why are composite materials made?

Answer 2

• To garner the desirable properties of multiple materials into one material

Question 3

Name 4 composite materials

Answer 3

• GRP (Fibreglass)
• Tungsten Carbide
• Concrete
• Glulam

Question 4

Glass reinforced plastic (fibreglass)

Answer 4

• Glass fibres mixed with polyester resin
• Lightweight, corrosion resistant, good compressive strength
• Used in boat hulls, kayaks, car bodies

Question 5

Tungsten carbide

Answer 5

• A cermet: ceramic and metal, specifically ceramic tungsten and cobalt metal
• Very hard and tough. Resistant to high temperatures
• Used in machinery like lathe tools, drill bits, or router bits

Question 6

Concrete

Answer 6

• Combination of cement, sand, aggregate, and water
• Easy to mould, high compressive strength, few surface defects
• Used in construction, foundations

Question 7

Glulam

Answer 7

• Combination of timber laminates and MF adhesive
• Lightweight, high structural stability, fire resistant, nice aesthetics
• Used in construction, decking, roof beams