Basic of engineering design for ies by devendra
- 1. IES PRE –paper (1) Topic-(4) Generalprinciplesof designs, drawing, and Importanceofsafety Devendrapulast
- 2. INTRODUCTION :- The creative application of scientific principles to design or develop structures, machines, apparatus, or manufacturing processes, or works utilizing them singly or in combination; or to construct or operate the same with full cognizance of their design; or to forecast their behavior under specific operating conditions; all as respects an intended function, economics of operation or safety to life and property
- 3. The step used for solving the Design problem are :- • Define the problem or need • Gather pertinent information • generate multiple solution • Analyze and select a solution • Test and implement the solution
- 5. (1)Define the problem or need:- • A problem must be clearly identified and defined before to proceed toward design and development • It is important to understand the”vision of design” • Develop a problem statement such as:-
- 7. Establish criteria for success:- DESIGN LOW COST SAFE ENVIRONMENT FRIENDLY AESTHETIC SIMPLE TO OPERATE MUST BE DISPOSABLE
- 8. (2)Gather pertinent information :- The information gather by asking Following question to the design team – • Is the problem real and its statement accurate • Is there really a need for a new solution or has the problem already been solved • What are the existing solution to the problem • What is Right/Wrong with the way the problem is currently being solved • What are the economic factor governing the solution ? • How much will people pay for a solution to the problem ?
- 9. (3) Generate multiple solution:- • This step depends upon the creativity of the design team or the engineer in charge . • Engineer have to imagine multiple ways to create new solution or to improve existing available solution based on the problem statement and gathered pertinent information regarding product .
- 10. Brain writing
- 11. (4) Analyze and select a solution :- Before deciding which design solution to Implement the following is a list of analysis that need to be considered 1) Functional analysis 2) Ergonomics/Industrial design 3) Product safety and liability 4) mechanical strength 6) manufacturing and testing 7) Economic and material analysis
- 12. Ergonomics Ergonomics , an applied science concerned with designing and arranging thing people use so that the people and thing interact most efficiently and safety it is also called human engineering
- 13. (5) Test and implement the solution :- • The final phase of the engineering design is testing and implementation of selected solution These are divided into two part 1) Traditional engineering 2) concurrent engineering
- 16. Concurrent engineering Concurrent engineering ,also known as simultaneous engineering .is a method of designing and developing product In which the different stage run simultaneously rather than consecutively • It decrease product development time • leading to improved productivity and reduced cost Example :- CAD and CAM software based designing
- 21. Six sigma :- Six sigma is a management philosophy that utilizes a set of tools and techniques to improve business processes The philosophy emphasizes setting extremely high objective , collecting data and analyzing result to a fine degree as a way to reduce defects in products and service . six sigma process claims its benefits includes up to 50% process cost reduce These are two type :- 1) DMADV 2) DMAIC
- 22. DMADV should be used when an organization Is developing a new product or service DMAIC should be used when An existing product or service Is not meeting customer need
- 23. Golden rectangle:- The golden rectangle was discovered by Pythagoras in ancient Greece. • The golden rectangle has proportion of its sides such that when a square is cut from the rectangle the remaining rectangle has the same proportion • the process of dividing subsequent rectangles into square and rectangle can continue till infinity in both the direction . a + b a = a b
- 24. Use of golden rectangle in ancient structure
- 25. Use of golden spiral in modern building
- 26. Formation of galaxy is based on golden rectangle