ch15 - Chapter 15 Composites Concept Check 15.1 Question:...

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Chapter 15 Composites Concept Check 15.1 Question: Cite the general difference in strengthening mechanism between large-particle and dispersion-strengthened particle-reinforced composites. Answer: The major difference in strengthening mechanism between large-particle and dispersion-strengthened particle-reinforced composites is that for large-particle the particle- matrix interactions are not treated on the molecular level, whereas, for dispersion-strengthening these interactions are treated on the molecular level.
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Concept Check 15.2 Question: In the table below are listed four hypothetical aligned fiber-reinforced composites (labeled A through D), along with their characteristics. On the basis of these data, rank the four composites from highest to lowest strength in the longitudinal direction, and then justify your ranking. Fiber Ave. Fiber Critical Composite Fiber Vol. Fraction Strength Length Length Type Fibers (MPa) (mm) (mm) A glass 0.20 3.5 x 10 3 8 0.70 B glass 0.35 3.5 x 10 3 12
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ch15 - Chapter 15 Composites Concept Check 15.1 Question:...

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