Engineering Materials And Their Applications
This edition of the classic text/reference book has been updated and revised to provide balanced coverage of metals, ceramics, polymers and composites. The first five chapters assess the different structures of metals, ceramics and polymers and how stress and temperature affect them. Demonstrates how to optimize a material's structure by using equilibrium data (phase diagrams) and nonequilibrium conditions, especially precipitation hardening. Discusses the structures, characteristics and applications of the important materials in each field. Considers topics common to all materials—corrosion and oxidation, failure analysis, processing of electrical and magnetic materials, materials selection and specification. Contains special chapters on advanced and large volume engineering materials plus abundant examples and problems.
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The modulus of elasticity is used to calculate the deflection of a given part under
load. For example, a crankshaft will bend a certain amount between bearings,
and clearance must be allowed for this. Also, a material of the same strength may
However, as noted earlier, in plastics the modulus changes drastically with time
and temperature. Also there is a great difference in moduli among the plastics.
Even in one material, such as polyethylene, the modulus can vary. For example
10.5, which shows how an amorphous material with a high Tg (polystyrene) has
a high modulus of elasticity compared with natural rubber. EXAMPLE 1 0. 1 Why
is it usual to find a thermoplastic with a higher modulus of elasticity than an ...
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A General View of the Problems
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