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Handbook of Machine Design P1

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Design and the Designer Design and engineering, although sometimes viewed as distinct, are two facets of the same profession. Krick [1.1] states that engineering is a profession concerned primarily with the application of a certain body of knowledge, set of skills | __CHAPTER 1 INTRODUCTION STANDARDS CODES REGULATIONS Leo C. Peters Ph.D. P.E. Professor of Mechanical Engineering Iowa State University Ames Iowa R. Bruce Hopkins Ph.D. P.E. The Hopkins Engineering Co. P. C. Cedar Falls Iowa 1.1 THE DESIGNER AND THE DESIGNER S PROBLEMS 1.1 1.2 DECISIONS AND THEIR IDENTIFICATION 1.10 1.3 ADEQUACY ASSESSMENT 1.15 1.4 COMMUNICATION OF ENGINEERING INFORMATION 1.20 1.5 LEGAL CONSIDERATIONS IN DESIGN 1.34 1.6 STANDARDS CODES AND GOVERNMENTAL REGULATIONS IN DESIGN 1.36 1.7 SOURCES OF STANDARDS CODES GOVERNMENTAL REGULATIONS INDEXES AND STANDARDIZATION ACTIVITIES 1.40 REFERENCES 1.43 1.1 THE DESIGNER AND THE DESIGNER S PROBLEMS 1.1.1 Design and the Designer Design and engineering although sometimes viewed as distinct are two facets of the same profession. Krick 1.1 states that engineering is a profession concerned primarily with the application of a certain body of knowledge set of skills and point of view in the creation of devices structures and processes used to transform resources to forms which satisfy the needs of society. Design is the activity in which engineers accomplish the preceding task usually by responding to a design imperative for the required task. The design imperative is the result of a problem definition and has the following general form 1.2 Design subject to certain problem-solving constraints a component system or process that will perform a specified task subject to certain solution constraints optimally. The end result of the engineering design process is a specification set from which a machine process or system may be built and operated to meet the original need. 1.1 1.2 STANDARD HANDBOOK OF MACHINE DESIGN The designer s task is then to create this specification set for the manufacture assembly testing installation operation repair and use of a solution to a problem. Although primarily decision making and problem solving the task is a complex activity requiring special knowledge and abilities. A designer .