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Question: fiber reinforced composites mechanics 336 e11efvf emvm...

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fiber reinforced composites / mechanics

P3.24. The following tensile modulus values were experimentally determined for a unidirectional carbon fiber-reinforced PEEK composite (Vr- 0.62) Fiber orientatiorn angle (degrees) Modulus (GPa) 10 30 45 60 75 90 135.2 113.4 7225.411..5 9.65 8.36 9.20 Plot the data as a function of the fiber orientation angle and compare them with the theoretical predictions assuming EF 230 GPa v「0.28 Em 3.45 GPa, and vm-0.4. Verify the validity of Equation 3.36.

3:36 = E11=EfVf + EmVm

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