Designing machines, vehicles, and structures that are safe, reliable, and economical requires both efficient use of materials and assurance that structural failure will not occur. It is therefore appropriate for undergraduate engineering majors to study the mechanical behavior of materials, specifically such topics as deformation, fracture, and fatigue. This book may be used as a text for courses on mechanical behavior of materials at the junior or senior undergraduate level, and it may also be employed at the first-year graduate level by emphasizing the later chapters. The coverage includes traditional topics in the area, such as materials testing, yielding and plasticity, stress-based fatigue analysis, and creep. The relatively new methods of fracture mechanics and strain-based fatigue analysis are also considered and are, in fact, treated in some detail. For a practicing engineer with a bachelor’s degree, this book provides an understandable reference source on the topics covered. Emphasis is placed on analytical and predictive methods that are useful to the engineering designer in avoiding structural failure. These methods are developed from an engineering mechanics viewpoint, and the resistance of materials to failure is quantified by properties such as yield strength, fracture toughness, and stress–life curves for fatigue or creep. The intelligent use of materials property data requires some understanding of how the data are obtained, so their limitations and significance are clear. Thus, the materials tests used in various areas are generally discussed prior to considering the analytical and predictive methods. In many of the areas covered, the existing technology is more highly developed for metals than for nonmetals. Nevertheless, data and examples for nonmetals, such as polymers and ceramics, are included where appropriate. Highly anisotropic materials, such as continuous fiber composites, are also considered, but only to a limited extent. Detailed treatment of these complex materials is not attempted here. The remainder of the Preface first highlights the changes made for this new edition. Then comments follow that are intended to aid users of this book, including students, instructors, and practicing engineers.Introduction Structure and Deformation in Materials A Survey of Engineering Materials Mechanical Testing: Tension Test and Other Basic Tests Stress-Strain Relationships and Behavior Review of Complex and Principal States of Stress and Strain Yielding and Fracture Under Combined Stresses Fracture of Cracked Members Fatigue of Materials: Introduction and Stress-Based Approach Stress-Based Approach to Fatigue: Notched Members Fatigue Crack Growth Plastic Deformation Behavior and Models for Materials Stress-Strain Analysis of Plastically Deforming Members Strain-Based Approach to Fatigue Time-Dependent Behavior: Creep and Damping.
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