Determine fraction of the load would cnt fibers carry, Mechanical Engineering

Carbon nanotubes (CNTs) with low weight (density = 1.3 g/ cm^3), high tensile strength (50 GPa), and modulus of elasticity (1 TPa) in the axial direction have been touted as the strongest material yet discovered. Calculate the specific strength for CNTs.  If a composite was made using an alumina (Al2O3) matrix with 1% volume CNT fibers, what fraction of the load would the CNT fibers carry? In practice, ceramic matrix CNT composites do not exhibit the expected improvement in mechanical properties. What could be some possible reasons for this?

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