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3. Composites with fiber-reinforced structures with continuous and aligned fiber properties are made of 45 vol%...

3. Composites with fiber-reinforced structures with continuous and aligned fiber properties are made of 45 vol% aramid fiber and 55 vol% polycarbonate matrix. The mechanical characteristics of the two materials can be shown in the following table

Modulus of Elasticity [GPa (psi)]

Tensile Strength [MPa (psi)]

Aramid fiber

131 (19 × 106)

3600 (520000)

Polycarbonate

2.4 (3.5 × 105)

65 (9425)

When the aramid fiber breaks, the stress on the polycarbonate matrix will be 35 MPa (5075 psi). Determine it

a. Longitudinal Tensile Strength

b. longitudinal modulus of elasticity

COURSE: Material Physics

Science   Advanced-Physics   
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