Page 13 - Mechanical Behavior of Materials

12 Preface

• The end-of-chapter problems and questions are extensively revised, with 35% being new or
significantly changed, and with the overall number increased by 54 to be 659. In each chapter, at
least 33% of the problems and questions are new or changed, and these revisions emphasize the
more basic topics where instructors are most likely to concentrate.
• New to this edition, answers are given near the end of the book for approximately half of the
Problems and Questions where a numerical value or the development of a new equation is
requested.
• The end-of-chapter reference lists are reworked and updated to include recent publications,
including databases of materials properties.
• Treatment of the methodology for estimating S-N curves in Chapter 10 is revised, and also
updated to reflect changes in widely used mechanical design textbooks.
• In Chapter 12, the example problem on fitting stress–strain curves is improved.
• Also in Chapter 12, the discussion of multiaxial stress is refined, and a new example is added.
• The topic of mean stress effects for strain-life curves in Chapter 14 is given revised and updated
coverage.
• The section on creep rupture under multiaxial stress is moved to an earlier point in Chapter 15,
where it can be covered along with time-temperature parameters.

PREREQUISITES

Elementary mechanics of materials, also called strength of materials or mechanics of deformable
bodies, provides an introduction to the subject of analyzing stresses and strains in engineering
components, such as beams and shafts, for linear-elastic behavior. Completion of a standard
(typically sophomore) course of this type is an essential prerequisite to the treatment provided
here. Some useful review and reference material in this area is given in Appendix A, along with
a treatment of fully plastic yielding analysis.
Many engineering curricula include an introductory (again, typically sophomore) course in
materials science, including such subjects as crystalline and noncrystalline structure, dislocations
and other imperfections, deformation mechanisms, processing of materials, and naming systems for
materials. Prior exposure to this area of study is also recommended. However, as such a prerequisite
may be missing, limited introductory coverage is given in Chapters 2 and 3.
Mathematics through elementary calculus is also needed. A number of the worked examples
and student problems involve basic numerical analysis, such as least-squares curve fitting, iterative
solution of equations, and numerical integration. Hence, some background in these areas is useful,
as is an ability to perform plotting and numerical analysis on a personal computer. The numerical
analysis needed is described in most introductory textbooks on the subject, such as Chapra (2010),
which is listed at the end of this Preface.

REFERENCES AND BIBLIOGRAPHY

Each chapter contains a list of References near the end that identifies sources of additional reading
and information. These lists are in some cases divided into categories such as general references,
sources of materials properties, and useful handbooks. Where a reference is mentioned in the text,