ge105: introduction to engineering design an overview of engineering design college of engineering...
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GE105: Introduction to Engineering Design
An Overview of Engineering Design
College of EngineeringKing Saud University
Feb 10, 2012
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Engineering Design
Importance of Engineering Design• 70% of a product’s total cost is
determined by its design
• Costs Include:– Material costs– Facilities– Tooling– Labor– Other support costs
• Studies have shown that 50 to 80% of the life cycle costs of products are influenced by engineering design
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Engineering Design• Engineering design is the process of
devising a system, component or process to meet desired needs.
• It is a decision making process in which the basic sciences and mathematics and engineering sciences are applied to convert resources optimally to meet a stated objective.
• Among the fundamental elements of the design process are the establishment of the objectives and criteria, synthesis and analysis, construction, testing and evaluation.
• It is essential to include a variety of realistic constraints such as economic factors, safety, reliability, aesthetics, ethics and social factors.
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ABETObjectives• Each educational program must include a
meaningful major engineering design experience that builds upon the fundamental concepts of mathematics, basic sciences , the humanities and social sciences and engineering topics, and communication skills.
• Design is too broad for a single course.
• The scope of the design experience within a program should match the requirements of practice within that discipline.
• All design work should not be done in isolation by individual students; team efforts are encouraged where appropriate
• Many projects at the Junior/Senior level are team oriented
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Engineering• What is engineering?
• What is your experience with engineering?
• What does it mean to learn to be an engineer in school?
• Can you name one thing in this room that was not developed, produced, or installed by an engineer?
• Can you think of a profession that is affecting your life more pervasively than engineering?
• Engineering is the Art of Design
• Starts with a need and end with a product
Even in the smallest and most remote places on earth, engineering is there shaping life and
the environment
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Science versus Engineering
• Science : The study of nature and natural processes
• Engineering: The use of knowledge of nature and natural processes to solve problems
"Scientists discover the world that exists; engineers create the world that never was." - Theodore Von Karman
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Who is the Best Engineer?• “The best engineer is
the person who can provide the simplest and more effective solution to solve a problem”
K. Åström
Engineer
Knowledge
Skills
Solving a problem
Develop a new product
Improve service
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The Design Process
Steps1. Problem statement2. Search and re-search3. Brainstorm/Generate Creative
Ideas4. Analyze alternative solutions5. Arrive at an optimum solution6. Construction, analysis and
testing7. Final Evaluation8. Communication
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Problem Statement Examples
Only when you can specify the problem can you hope to achieve your goal
Loss of efforts and efficiency occurs when trying to solve un-clear problems
Remarks: 1. Objectives are function of needs2. Objectives should be SMARTSpecificMeasurableAchievableRealisticTimebound
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Importance of Understanding What the Project is About: of Objectives, Need and Problem Definition
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Other Steps
Search for alien life on other planets!
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Creativity
Creative people usually have busy thoughts…
Creativity can lead to all kind-of ideas
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Evaluations
One possible solution!!
Alternative Energy Solutions
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Step 6 – Construction, Analysis and Test
Break Squeal FEA Analyses
Valve Flow CFD Analyses
Motor Prototype Testing
Toyota RAV4 Prototype Testing
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The Iterative Design Process
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Final Steps
The final product from such a design process is usually a
nice, sleek, powerful and efficient product