MECH 210 081201 Composites

MECH 210 081201 Composites - MECH 210 081201 Composites...

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MECH 210 081201 Composites Composite material : a group of materials composed of a mixture or combination of two or more micro- or macroconstituents that differ in form and chemical composition that are insoluble in each other. The constituents are continuous matrix and dispersed phase ( s ) . Matrix : the continuous phase that surrounds other dispersed phase ( s ). The properties of composites are a function of the properties of the constituents, their relative amounts, and the geometry of the dispersed constituent. Classification of Composites: Rule of Mixtures: (1) i i c V p P = and (2) = i i c p V P 1 Particle-reinforced Composites Modulus of elasticity: ( ) p p m m i i c V E V E V E u E + = = (upper bound), ( ) p p m m c E V E V l E + = 1 ( ) m p p m p m c E V E V E E l E + = (lower bound) Fiber-reinforced Composites Critical fiber length: c f c d l τ σ 2 * = when applied stress equal to fiber ultimate tensile strength Fiber stress achieve the magnitude of fiber tensile strength when fiber length
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MECH 210 081201 Composites - MECH 210 081201 Composites...

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