Engineering Design Process

1
Engineering Design Process

• The process of creating a set of specifications
  for a product that fulfills the design
  specifications.

2
Design Criteria

• What are the material requirements ?
• What are the cost limitations?
• What is the manufacturing time ?
• Product support needs?
• Estimated product life ?

• What is the problem ?
• What is the purpose ?
• Who is the user ?
• What are the customer needs ?
• What are some existing products out there
  already?
• What are the shape/size limitations ?

3
Design Framework
4
Design Brief

• A clear and concise description of the problem.
• Identification of the needs to solve the problem.
• Listing of any design constraints (limits). Such
  as function, appearance, time, legal, cost, etc.

5
Investigation

• Research of the problem.
• Information data collection.
• Analysis of information data as it applies to
  the problem.

6
Ideas

• Brainstorming process.
• Generation of possible solutions to the design
  problem.

7
Design Selection

• Evaluation of the ideas against the problem
  specifications.
• Selection of most promising design that you think
  will solve the problem.

8
Design Refinement

• At this stage of the design process the initial
  ideas are further defined and refined with the
  use of drawing and modeling techniques.
• This stage also forms a feedback loop with the
  design analysis stage.
• After the designs are analyzed, they may undergo
  further refinement of their design, which will
  then undergo more analysis.

9
Design Analysis

• The selected design undergoes analysis to
  determine the degree to which is will solve the
  problem
• Mechanical properties of design will be
  evaluated. This can be accomplished through
  drawings,modeling, mass property analysis, finite
  element analysis, simulations, etc.
• This stage also forms feedback loop with the
  design refinement stage.
• After the design is analyzed, it may then force
  the design to undergo additional refinement.

10
Final Design Selection

• After a review of all the data and design
  information, the final solution is selected.

11
Implementation

• Formulation of a plan to include all phases of
  product manufacture.
• Such as
• machine process
• assembly process
• packaging process
• repair process
• disposal process

12
Documentation

• This refers to the production of drawings to
  describe how the part or process is to be
  produced.