(a) Explain what is meant by term multi-directional composite laminate and using relevant sketches and/or equations explain why in-practice for many applications a multidirectional composite laminate is used, instead of a uni- directional (UD) composite laminate, despite the fact that UD laminate will have higher axial tensile strength and stiffness. (b) You have been provided, UD carbon fibre cloth and epoxy resin for making a part. Explain simple methods of mathematically estimating the axial stiffness (modulus) as well as transverse stiffness (modulus) of the resultant part made from these constituents. In both cases, clearly indicate the limitations of your method and what alternates can be adopted to get better approximations.
(a) Explain what is meant by term multi-directional composite laminate and using relevant sketches and/or equations explain why in-practice for many applications a multidirectional composite laminate is used, instead of a uni- directional (UD) composite laminate, despite the fact that UD laminate will have higher axial tensile strength and stiffness. (b) You have been provided, UD carbon fibre cloth and epoxy resin for making a part. Explain simple methods of mathematically estimating the axial stiffness (modulus) as well as transverse stiffness (modulus) of the resultant part made from these constituents. In both cases, clearly indicate the limitations of your method and what alternates can be adopted to get better approximations.
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