This book has been rewritten to match more closely the emphasis on the structure/properties/performance interplay that is developing in all aspects of technical materials -- both in universities and in industry. The book's new organization emphasizes the generic nature of engineering materials in phenomenon and function and acknowledges traditional classes of materials in the process. Coverage of frontier areas have been added including: toughened ceramics, new polymers, high-temperature superconductors, superhard magnets, and other fiber-optic glasses.