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#3 Composite Problem Consider the epoxy matrix C fiber unidirectional pre-preg composite system in CES: What do you estimate the fiber modulus and fiber strength to be (use average properties) What do you estimate the modulus for a balanced 0/90 lay-up? How does it compare to to a woven 0/90 (biaxial) lay-up? What do you estimate the modulus for a 45 ply to be? in the CES software there is a range of volume fraction of fiber and a range of weight fraction of fiber. You want to use the volume fraction.

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