Composites

Question 1

What is a Composite?

Answer 1

A material compromised of two or more different materials, resulting in a material with enhanced properties. Composites can either be;

• Fibre Based (CFRP, GRP, Fibre Concrete),
• Particle Based (Tungsten Carbide, Concrete), OR
• Sheet Based (Aluminium Composite Board, Engineered Wood, e.g. Glulam).

Question 2

Name three examples of Composites.

Answer 2

Carbon Fibre Reinforced Plastic (CFRP), Glass Fibre Reinforced Plastic (GFRP), Tungsten Carbide, Aluminium Composite Board, Concrete, Fibre Cement and Engineered Wood e.g. Glulam.

Question 3

Why is GRP (Glass Reinforced Plastic) suitable for a boat hull?

Answer 3

• It can be manufactured via the lay-up method, allowing complex 3D shapes such as the hull to be created.
• It can be pigmented to produce a range of colours for improved aesthetics or corporate branding such as racing team colours.
• It has chemical resistance so will not corrode or decay when in the salty sea water.
• It is a tough material and is able to withstand minor impact from waves, etc, without damage.