Design of Machine Elements

At the end of this course, the students should be able to: 1. state the fundamentals of machine design; 2. identify machine parts/elements, state their functions and describe their failure modes; 3. recognise the strategies of safety and its significance and application in design; 4. state the environment in which machine parts are required to function. 5. design machine elements using industrial codes and standard from handbooks and other sources; 6. identify the material constituents of machine parts, their engineering properties and make appropriate selection based on design requirement(s); and 7. design some machine parts based on the knowledge gained.

Principles and methods of design. Strength calculations. Standards. Preferred numbers and fits. Materials, standard sections and dimensions. Failure and factors of safety. Machine Elements: Design of the following: Riveted joints. Welded joints. Threaded joints. Springs. Friction drives. Belt and rope drives. Chain drives. Power screws. Brakes. Couplings and clutches. Machine Frame. Keys. Cotters and spine joints. Design and reduction of gears, Use of handbooks and standards, Choice of Manufacturing Processes on design of machine elements, assembly and performance.