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Question 2: Composite Property Calculations [20 marks] A carbon fibre epoxy pre-preg laminate of 10 layers thick with a stacking sequence of (0/0/+30/-30/90)s has been manufactured and has a fibre volume fraction of 0.5. The material properties of the T700 carbon fibre and the epoxy matrix are shown in Table Q2 below. Table Q2 Young's Modulus (E) [GPa) Poisson's Ratio (v) Tensile Shear Strength (S) Modulus (G) [MPa] [GPa) 5000 50 T700 Carbon Fibre 240 0.1 Epoxy Resin Matrix 5 100 4 0.3 a) Calculate the Young's Modulus of the laminate in the main load bearing direction (X- direction) and the lateral direction (Y-direction) using the Rule of Mixtures method. [4 marks] b) Calculate the Young's Modulus in the main load bearing direction (X-direction) and also in the Y-direction using the Simplified Classical Laminate Analysis method. [9 marks) c) Explain why you would not use the Simplified Classical Laminate Analysis method for predicting the performance of a multi-layered composite, as specified in this question, and justify which method you would propose. [3 marks] d) Calculate the efficiency factor for the Rule of Mixtures method in the X-direction if a 0/90 woven material was used for the specified stacking sequence. Clearly explain the procedure that you would follow. [4 marks]