New PDF release: The Science and Engineering of Materials, Sixth Edition
By Donald R. Askeland
ISBN-10: 0495296023
ISBN-13: 9780495296027
This article presents an knowing of the connection among constitution, processing, and homes of fabrics. via deciding on the suitable subject matters from this wealth of fabric, teachers can emphasize fabrics, offer a basic assessment, pay attention to mechanical habit, or concentrate on actual houses. because the publication has extra fabric than is required for a one-semester path, scholars also will have an invaluable reference for next classes in production, fabrics, layout, or fabrics choice.
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Extra resources for The Science and Engineering of Materials, Sixth Edition
Sample text
Some composites, such as carbon-carbon composites, special alloys, and ceramics, have excellent properties at high temperatures. September 11, 2001. Although the towers sustained the initial impact of the collisions, their steel structures were weakened by elevated temperatures caused by fire, ultimately leading to the collapse. High temperatures change the structure of ceramics and cause polymers to melt or char. Very low temperatures, at the other extreme, may cause a metal or polymer to fail in a brittle manner, even though the applied loads are low.
The key to understanding these differences is to understand how the atoms are arranged in each allotrope. 2-1 The Structure of Materials: Technological Relevance In today’s world, information technology (IT), biotechnology, energy technology, environmental technology, and many other areas require smaller, lighter, faster, portable, more efficient, reliable, durable, and inexpensive devices. We want batteries that are smaller, lighter, and last longer. We need cars that are relatively affordable, lightweight, safe, highly fuel efficient, and “loaded” with many advanced features, ranging from global positioning systems (GPS) to sophisticated sensors for airbag deployment.
The differences in strength, which are compared in Figure 1-3, illustrate the wide range of properties from which engineers can select. Since metallic materials are extensively used for load-bearing applications, their mechanical properties are of great practical interest. We briefly introduce these here. The term “stress” refers to load or force per unit area. “Strain” refers to elongation or change in dimension divided by the original dimension. ” When the deformation is elastic, stress and strain are linearly related; the slope of the stress-strain diagram is known as the elastic or Young’s modulus.
The Science and Engineering of Materials, Sixth Edition by Donald R. Askeland
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