QUESTION 1 Company Limited is faced with a decision-making problem in that it needs to replace the material of an existing component, which has failed in application, with one of three (3) materials (A, B or C). Table 1 below summarizes their relative comparative features. Table 1: Relative material feature characteristics Feature Material Cost/cm Datum Material (A) Material (B) Material (C) 1 2 4 1 Manufacturing Cost 2 2.5 2 1 Density 0.8 3 3 1 Tensile properties 2 3 4 Corrosion resistance 1.5 1.5 0.2 a) Use the Pugh Method of selection to determine the best material to replace the current one, using the following criteria: cost, strength, environmental protection and light weight. Having reviewed the customer requirements 12 Marks] Company Limited decides to add the following weighted property to the criteria: cost (0.25), strength (0.15), environmental protection (0.4) and light weight (0.2). b) Select the most suitable material using the weighted property index method. A scale of 1 - 8 to score the materials on each of the criteria should be used. [13 Marks] TOTAL 25 MARKS