Compostes

Question 1

Define the term composite

Answer 1

A composite is a material comprised with two or more materials that result in enhanced properties

Question 2

What are the three types of composites

Answer 2

1. Fibre based (GRP,CRP)
2. Particle based (tungsten carbide, concrete, reinforced polymer)
3. Sheet based (glulam)

Question 3

Define GRP

Answer 3

Glass reinforced plastics is plastic reinforced with fine glass to make a higher strength to weight ratio than its component parts

Question 4

Examples of GRP

Answer 4

Boat hulls
Pond liners
Flooring

Question 5

Strengths/ weaknesses of GRP

Answer 5

Strengths
Easily formed into shapes
Can be sanded for a smooth finish
Colour can be add at the start of process

Weakness
Breathing fibres can cause respiratory problems

Question 6

Define CFRP

Answer 6

Carbon fibre reinforced plastic is plastic reinforced with loose or woven carbon fibres to make a higher strength to weight ratio then its component parts

Question 7

Examples of CFRP

Answer 7

Propeller blades
Body armour
Golf clubs

Question 8

Strengths and weaknesses of CFRP

Answer 8

strengths
Easily formed into shapes
Can be sanded for smooth finish
Colour can be added at start of process
Weakness
Breathing fibres can cause respiratory problems