Question

1.9. A unidirectional discontinuous E-glass fiber-reinforced vinyl ester com-
posite is required to have a longitudinal tensile strength of 1000 MPa. The
fiber volume fraction is 60%. Fiber length and fiber bundle diameter are
12 and 1 mm, respectively. Determine the fiber-matrix interfacial shcar
strength needed to achieve the required longitudinal tensile strength.
The fiber and matrix properties are as follows:
Fiber: Modulus = 72.4 GPa, tensile strength= 2500 MPa
Matrix: Modulus = 2.8 GPa, tensile strength=110 MPa.​

Answer 1

Answer:

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