engineering design
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ENGINEERING DESIGN Licking Heights Central CAD
Natural World vs Designed World
What is Engineering?
ENGINEERING DESIGN Most engineering designs
are considered inventions, devices or systems.
Some can be improvements on existing devices, processes or systems.
Step by step methodology required.
Engineers are problem solvers and create our designed world.
DESIGN vs ANALYSIS PROBLEMS Analysis Problem
Specific solution Only 1 answer
Design Problem Open ended solution Many answers
160 Feet
SOLVING DESIGN PROBLEMS Iterative Process (cyclical) “Going back to the
drawing board” is always an option.
Wright Brothers tested first with kites and did over 700 glider flights before they achieved their goal.
Solutions don’t just appear they require a process.
Scientific Method
The Engineering Design Process
1. IDENTIFY THE PROBLEM Identify and
Establish the Need Develop a Problem
Statement Establish Criteria for
Success Do research and
find out what have others done before.
2. BRAINSTORM All ideas are welcome.
There is no bad idea; write them all down!
Be Creative Creativity is not something you
are born with. It comes from a conscious effort to think and act creatively.
Keep an Open Mind Take Risks See the “Whole Picture” Choose the best solution to
the problem.
3. DESIGN Functional analysis (Will it
solve the problem?) Ergonomics (Will humans be
able to use it comfortably ) Aesthetics (does it look good?) Manufacturability/Testability
(Do you have the resources and time to build it?)
Product safety and liability (Will it cause injury to humans or damage the environment?)
Economic and market analysis (Will people buy/use it?)
Regulatory and Compliance (Does it follow the rules/laws?)
4a. BUILD Gather Materials
and tools. Build a Prototype
first fully operational production of the complete design solution
4b. TEST AND EVALUATE Does it meet the
criteria for success? What is Concurrent
Engineering Computer Aided Design
(CAD) Are there some
tweaks to your solution that would improve performance?
Is there a better solution altogether?
4c. REDISGN Go back to the
drawing board What went well? What failed and
how can it be improved?
5. SHARE SOLUTION What is the best
feature of your design?
What would you do differently if given more time and resources?
What were the different steps you had to do to get your project to work the way you wanted?
The Engineering Design Process
Citations
Khandani, Seyyed, The Engineering Design Process, August 2005
The Design Squad, http://pbskids.org/designsquad/parentseducators/workshop/process_id.html , 31 July, 2011
Rubber Band Racers Project
• You will be divided into groups of 2.• As a team develop a car powered by rubber
bands from everyday items, and that the rubber band car must be able to travel a distance of at least 3 meters within a 1 meter wide track. Rubber bands cannot be used to slingshot the cars. The car that can travel within the track for the greatest distance is the winner.