*ISSUES TO ADDRESS...• What are the classes and types of composites?• What are the advantages of using composite materials?• How do we predict the stiffness and strength of the various types of composites?Chapter 16: Composites *CompositeCombination of two or more individual materials
Design goal: obtain a more desirable combination of properties (principle of combined action)
e.g., low density and high strength
-- Multiphase material that is artificially made.• Phase types:
-- Matrix - is continuous
-- Dispersed - is discontinuous and surrounded by matrix
Terminology/ClassificationAdapted from Fig. 16.1(a), Callister & Rethwisch 8e. *• Dispersed phase:
MMC: increase sy, TS, creep resist.
CMC: increase KIc
PMC: increase E, sy, TS, creep resist.
-- Types: particle, fiber, structuralTerminology/ClassificationReprinted with permission from
D. Hull and T.W. Clyne, An Introduction to Composite Materials, 2nd ed., Cambridge University Press, New York, 1996, Fig. 3.6, p. 47.woven fiberscross section view *Classification of CompositesAdapted from Fig. 16.2, Callister & Rethwisch 8e. *Classification: Particle-Reinforced (i) ...