Product Analysis

1
Product Analysis Design

• Analysis
• Use knowledge to determine a state
• Leads to single answer
• Design
• Multiple answers possible
• Process includes
• Creativity
• Evaluation
• Decision choices
• Reproduction recreating existing designs

2
Analysis Design

• Analysis
• Given Beam dimensions, allowable stress
• Determine the maximum allowable load
• Design
• Given Load to be carried, allowable stress
• Determine Best possible shape
• Reproduction
• Copy the beam from last years design

3
Analysis or Design?

• Find the best route between home and the airport.
• Find the cutting pattern that wastes the least
  material in building a product.
• Find a way to prevent customers from burning
  their hands on a paper cup full of hot coffee.
• Find a way to stack cans so the smallest box can
  be used for shipping
• Find a way to mount a cellular phone in a car for
  hands-free operation.
• Find a way to use GPS to automatically pilot a
  car.

4
Good Design

• Works all the time
• Meets technical requirements
• Meets cost constraints
• Requires little or no maintenance
• Is safe
• Creates no ethical dilemma

5
Bad Design vs. Good Design

• Listens to new ideas

• Has all the answers

• Considers a variety of solutions before picking a
  design approach.

• Tunnel vision pursues the first idea that comes
  to mind.

• Project not complete at the first sign of success

• Ships product without thorough testing.

• Never content to design solely by trial and error

• Thinks trial and error is engineering design

• Says
• I need to understand why this works.
• Lets consider other ideas.

• Says
• Why wont this work? Betty did it this way!
• Good enough!

6
Design Failure - TMI
7
Reverse Engineering

• Start with an engineered product
• Analyze the design
• Function
• Materials
• Dimensions
• Features
• Determine the original design problem
• Decide if it can be improved