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April 2013 www.sname.org/sname/mt ' P G T I [ ' H? E K G P E [ D [ ) . ( W G N % Q U V 4 G F W E V K Q P ( W V W T G 5 J K R U O C T K V K O G E Q P U W N V C P V U C P F G P I K P G G T K P I G Z R G T V U U W R R N [ G P G T I [ U C X K P I U Q N W V K Q P U H Q T G X G T [ U J K R K P [ Q W T ? G G V ( Q T K P U V C P E G V J G C Y C T F Y K P P K P I ' % 1 # U U K U V C P V U Q H V Y C T G H Q T Q R V K O C N U J K R V T K O Y Y Y H W V W T G U J K R F G ? Y Y Y G H? E K G P E [ E N C U U E Q O ? Y Y Y I N I T Q W R E Q Obrief review of dierential and integral calcu- lus would make this chapter complete. Part two, Statics and Strength of Materials, contains chapters two through eleven, and part three, Dynamics, con- tains Chapters twelve through nineteen. e authors are commended for present- ing the material in a logical sequence for each part. Each chapter builds upon the concepts presented in previous chapters. However, the reader may review the chap- ter matter in any order desired because the authors refer back, or forward, to specic examples in other chapters. For exam- ple, the subject of torque is introduced in chapter 10 to support chapter 11, Twisting of shafts, in order to complete the strength of materials subject matter. In problem 20 of Chapter 10, the reader is referred ahead to a power concept presented in chapter 15, Work, energy and power. In chapters 16, 17, and 19, the authors provide an excellent discussion of the advan- tages and disadvantages of frictional forces. In most instances, a low coecient of friction is desirable to minimize friction in bearings, pistons moving within cylinders, and so forth. However, the positive applications of friction are presented with examples such as disc braking systems, centrifugal clutches for transferring motion and power from an engine to a gearbox, and simple machines such as pulley systems and the screw jack. Chapter 19, Simple machines, is the culmi- nation of parts 1, 2, and 3, demonstrating the application of the engineering principles to practical applications. Parts 4, chapters 20 through 25 review the thermodynamic aspects of mechanical engi- neering. Included in this part is a chapter on hydrostatics, the study of uid pressure and the concepts of buoyancy and hydrostatic stability of barges, yachts, and ships. The chapter also defines metacentric height, which is used to determine hydrostatic sta- bility of the vessels just mentioned. Six types of pressure measuring devices, eleven ow measuring devices, and nine temperature measuring devices are described in part 4, including the construction, principle of operation, advantages and disadvantages, and practical application of each. Mechanical Engineering Principles is a valuable resource for both students and instructors. The theoretical engineering concepts are brought to life in the worked example problems, which are practi- cal situations found in everyday life. MT Raymond L. Mathewson, Jr., OE, is an assistant pro- fessor of marine engineering at the United States Merchant Academy and has been a SNAME Member for more than 35 years.