an introduction to mechanical engineering pdf

While developing the fourth edition of this textbook, our objective has to provide a resource that others can draw upon when teachingintroductory mechanical engineering to first-year and secondyear students. We expect that most such courses would encompass the bulkof material presented in Chapter 1 (The Mechanical Engineering P rofession), Chapter 2 (Mechanical Design), and Chapter 3 (Technical Problem Solving and Communication Skills). Based on the level and contact hours of their particular courses, instructors can select additional topics from Chapter 4 (Forces in
Structures and Machines), Chapter 5 (Materials and Stresses), Chapter 6 (Fluids Engineering), Chapter 7 (Thermal and Energy Systems), and Chapter 8 (Motion and Power Transmission).

For instance, Section 5.5 on materials selection is largely self-contained, and it provides an introductory-level student with an overview of the different classes of engineering materials. Similarly, the descriptions in Sections 7.6 and 7.7 of internal-combustion engines and electrical power plants are expository in nature, and that material can beincorporated in case studies to demonstrate the operation of some important mechanical engineering hardware. Rolling-contact bearings, gears, and belt and chain drives are similarly discussed in Sections 4.6, 8.3, and 8.6.

This textbook reflects our experiences and philosophy for introducing students to the vocabulary, skills, applications, and excitement of the mechanical engineering profession. Our writing has been motivated in part by teaching introductory mechanical engineering courses at our respective universities. Collectively, these courses have included lectures, computer-aided design and manufacturing projects, product dissection laboratories (an example of which is discussed in Section 2.1), and team design projects (many of which have been adapted into the new open-ended design problems at the end of each chapter).

A number of vignettes and case studies are also discussed to demonstrate for students the realism of what they are learning, including the “top ten” list of previous mechanical engineering achievements and a list of the top emerging fields in mechanical engineering both developed by the American Society of Mechanical Engineers (Section 1.3), the fourteen “grand challenges” from the
National Academy of Engineering (NAE) (Section 2.1); design innovation, patents, and a summary of the recently updated patent protection system in the United States (Section 2.2); the design of the Boeing 787 Dreamliner

(Section 2.3); the loss of the Mars Climate Orbiter spacecraft and the refueling
error on Air Canada Flight 143 (Section 3.1); the Deepwater Horizon oil spill disaster (Section 3.6), the design of a heart implant (Section 4.5); the design of products and materials for extreme environments (Section 5.2); the design of advanced materials for innovation applications (Section 5.5); microfluidic devices (Section 6.2); blood flow in the human body (Section 6.5); sports technology (Sections 6.6 and 6.7); global energy consumption (Section 7.3); renewable energies (Section 7.5); internal combustion engines (Section 7.6); solar power generation and the development of innovative energy solutions through crowdsourcing (Section 7.7); nanomachines (Section 8.3); and advanced geartrains for next generation engines (Section 8.5).