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The mechanical properties of a metal may be improved by incorporating fine particles of its oxide. Given that the moduli of e

 

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The mechanical properties of a metal may be improved by incorporating fine particles of its oxide. Given that the moduli of elasticity of the metal and oxide are, respectively, \( 61 \mathrm{GPa} \) and \( 380 \mathrm{GPa} \), what is the (a) upper-bound, and (b) lower-bound modulus of elasticity values (in GPa) for a composite that has a composition of 85 vol\% of oxide particles. (a) GPa (b) \( \mathrm{GPa} \)


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a)Modulus of elasticity of upper-bound : Consider the expression of rule of mixtures for upper-bound
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