Composites Flashcards
1
Q
Define Composites
A
Two or more materials combined to create a material with improved properties
2
Q
Name three common composites
A
Carbon fibre, MDF, GRP
3
Q
How thick (diameter) are the fibres used in carbon fibre?
A
0.01 - 0.005 (mm)
4
Q
How is carbon fibre bonded?
A
compression and resin
5
Q
Give three advantages of carbon fibre
A
- high tensile strength
- light weight
- complex one sheet structures can be formed
- aesthetically appealing
6
Q
Give three disadvantages of carbon fibre
A
- expensive
- specialised manufacture require
- only available in black
- cannot be recycled
7
Q
Give three uses of carbon fibre
A
- motor sport
- civil engineering (buildings)
- military
- aerospace (helicopter blades)
8
Q
How is MDF bonded?
A
compression and resin
9
Q
Give three advantages of MDF
A
- no knots
- easily manipulated
- warp resistant (to an extent)
- comes in very large sheets
10
Q
Give three disadvantages of MDF
A
- heavy
- breaks when water logged
- splits easily
- fibres can be dangerous
11
Q
Give three uses of MDF
A
- chairs
- doors
- furniture
12
Q
How is GRP made?
A
plastic woven matrix reinforced with glass
13
Q
Give three advantages of GRP
A
- waterproof
- good insulator
- corrosion resistant
- easily repaired
14
Q
Give three disadvantages of GRP
A
- expensive compared to generic materials
- high quality mould required
- hazard when touched
- not tough
15
Q
Give three uses of GRP
A
- farm animal enclosures
- roller coaster carts
- kayaks
