Engineering Design Process: A Six-Step Guide with Garage Door Problem Example, Slides of Computer Graphics and Animation

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The Design Process

Objective

• To understand the role that engineering

graphics plays in the world of engineering

• To understand the process of design

A Trip into Africa

• You need to learn the language

• You need to learn the culture

• How are things done?
• What is important?

• An exciting experience that opens up new

opportunities

• A new perspective
• A new way to communicate

A Trip into Engineering

• You need to learn the language

Engineering Graphics

• Definition: The use of drawings in the engineering design process based on a system of well established rules and conventions that clearly conveys information about an object
• Imagine trying to describe a simple physical object that you have never seen without being able to draw it
• Standard conventions (like vocabulary in language) allow us to communicate more effectively and with clarity

A Trip into Engineering

• An exciting experience that opens up new

opportunities

• A new perspective
  • Able to better visualize an object
  • The act of creating a drawing is often an iterative process as the drawing reveals critical information
• A new way to communicate
  • Allows for simple clear communication with other engineers and technicians
  • When added to other forms of communication gives richness and strength to the presentation of an idea

A Six Step Design Process

• Design

• Definition: The process of bringing together engineering principles, material resources, and creativity to produce a new solution to a well defined problem
• A non-linear process
  • Concurrent engineering
  • Many of the processes in design may be revisited several times
• Engineers are just some of the players

A Formal Problem Statement

• Problem Description
  • A concise description capturing the main problem
• Requirements
  • Conditions that must be satisfied
  • Prioritize other items
• Limitations
  • Determine constraints (cost, space, weight, environment, etc.)
• Additional information
  • Has this problem been addressed in the past?
  • Are there solutions to similar problems?

A Six Step Design Process

• Step Two: Preliminary Ideas
  • Brainstorm
    • Wild ideas are encouraged
    • Use your imagination (be creative)
  • Make sketches
• Step Three: Preliminary design
  • Select best of preliminary ideas
  • Combine ideas
  • Refine sketches
  • Develop simple computer models
  • Evaluate the merits of each design

A Six Step Design Process

• Step Six: Implementation
  • Choose the best design based on results of the previous steps (refinement and analysis)
  • Documentation
    • Design drawings (needed for patent application)
    • Create working drawings (production drawings)
    • Technical illustrations
  • Build a prototype
  • Do thorough testing
  • Marketing
  • Production planning

A Six Step Design Process

• Application: The garage door problem
  • Assignment: Write a “formal problem statement” addressing all the elements discussed in class - Begin discussions (brainstorming) about the problem and write a concise description of the problem - Come to lab prepared to continue this process - Read the assigned section in your text for this week - Review your class notes