Factor
|
Weighting Factor
|
Steel
|
Titanium
|
Auminum
|
Composites
|
|
Strength
/ Weight Ratio
|
3
|
-1
|
1
|
0
|
2
|
|
Youngs
Modulus
|
2
|
1
|
2
|
0
|
-1
|
|
Density
|
2
|
-1
|
2
|
1
|
0
|
|
Cost
|
4
|
3
|
-2
|
2
|
-3
|
|
Durability
|
3
|
-2
|
2
|
1
|
0
|
|
TOTAL
|
3
|
9
|
13
|
-8
|
||
Position
|
3
|
2
|
1
|
4
|
Monday 12 December 2011
Decision matrix for material
The Pugh decision matrix shows how the factors considered for material choice were weighted and scored. Aluminium is our chosen material.
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