lecture 2: design process and case studies...•generate lots of ideas •explore all classes of...
TRANSCRIPT
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D-Lab Spring 2010
Development through
Dialogue, Design and Dissemination
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Today’s Class
• Logistics • Design Box Presentations • Design, Innovation, Invention and the
Design Process • Discussion
– Readings • Case Studies
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Some Logistics
• Turning in Homework • Course website • Textbooks
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Technology Boxes
• Which one is your favorite? • Which one exempifies the trade-offs
that were made
• 2 minutes or less!
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Design, Innovation and Invention
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invent: to be the first to think of, make, or use something
design: to work out or create the form or structure of something
Source: Encarta® World English Dictionary © 1999 Microsoft Corporation. All rights reserved. Developed for Microsoft by Bloomsbury Publishing Plc. This content is excluded from our Creative Commons license. For more information, see http://ocw.mit.edu/fairuse .
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Innovation
Clear plastic bottles poking through roof capture sunlight to illuminate windowless rooms
http://www.youtube.com/watch?v=CS3764DmIP4
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Harder problems lead to better inventions
Shawn Frayne
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Challenges in Design
• Tradeoffs • Dynamics and long-term effects of use • Details • Time Pressures • Economics • Use and mis-use • Ethics
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The Design Process
• Information Gathering • Problem Definition • Design Specifications • Idea Generation • Analysis & Experimentation • Concept Evaluation • Detail Design • Fabrication • Testing & Evaluation
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The Creativity Caveat
• Don’t let the process detract from the product
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The Changing Approach
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The Design Process
• Information Gathering • Problem Definition • Design Specifications • Idea Generation • Analysis & Experimentation • Concept Evaluation • Detail Design • Fabrication • Testing & Evaluation
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The Design Process
• Information Gathering • Problem Definition • Design Specifications • Idea Generation • Analysis & Experimentation • Concept Evaluation • Detail Design • Fabrication • Testing & Evaluation
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The Design Process
• Information Gathering• Problem Definition• Design Specifications• Idea Generation• Analysis & Experimentation• Concept Evaluation• Detail Design• Fabrication• Testing & Evaluation
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Design Specifications
• Translate customer needs into quantitative design performance targets
• Define internal basis for measuring success
• Capture the necessary characteristics for a successful product
• Provide a basis for resolving trade-offs
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Translating Customer Needs
Need Design
Attribute
Units Owner
Easy assembly
Assembly time seconds Floyd
Safe Structural safety
factor
Lisa
Safe Fatigue life cycles Nathan
Magical Works like magic subjective Meta
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The Design Process
• Information Gathering • Problem Definition • Design Specifications • Idea Generation • Analysis & Experimentation • Concept Evaluation • Detail Design • Fabrication • Testing & Evaluation
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Brainstorming Method
• generate lots of ideas• explore all classes of solutions• develop new perspectives• generate usable information
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Brainstorming Rules
• Defer judgment
• Build upon the ideas of others
• One conversation at a time
• Stay focused on the topic
• Encourage wild ideas
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The Design Process
• Information Gathering• Problem Definition• Design Specifications• Idea Generation• Analysis & Experimentation• Concept Evaluation• Detail Design• Fabrication• Testing & Evaluation
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The Design Process
• Information Gathering • Problem Definition • Design Specifications • Idea Generation • Analysis & Experimentation • Concept Evaluation • Detail Design • Fabrication • Testing & Evaluation
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Pugh Chart
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The Design Process
• Information Gathering • Problem Definition • Design Specifications • Idea Generation • Analysis & Experimentation • Concept Evaluation • Detail Design • Fabrication • Testing & Evaluation
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The Design Process
• Information Gathering • Problem Definition • Design Specifications • Idea Generation • Analysis & Experimentation • Concept Evaluation • Detail Design • Fabrication • Testing & Evaluation
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The Design Process
• Information Gathering• Problem Definition• Design Specifications• Idea Generation• Analysis & Experimentation• Concept Evaluation• Detail Design• Fabrication• Testing & Evaluation
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Problem Solution
Think of ideas
Choose the best idea
Work out details
Build
Test
Gather Information
Experiment
Get feedback
The Design Process
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Design for Developing Countries
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“Brute force engineering options often meet the criteria but somewhere there is a profound solution, which is simple, cheap, and beautiful. Hold out for this as long as possible.”
-Kurt Kornbluth former D-Lab Instructor
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Battery-operated field incubator $1250 Phase change
incubator $100
Thermo-electric field incubator $500
Commercial incubator photos (left and center) © source unknown. All rights reserved. This content is excluded from our CreativeCommons license. For more information, see http://ocw.mit.edu/fairuse.
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The Phase Change Incubator
0
20
40
60
80
100
120
Time
Te
mp
era
ture
•••
Sol
id
Liquid
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Guiding Principles for DfDC • Identify functional requirements • Encourage participatory development • Value indigenous knowledge • Promote local innovation • Strive for sustainability
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Technology Case Studies
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Coming up… • Project Selection (Mar 1)
– Design challenge descriptions due for review by Wednesday, Feb 17
– Slides due by noon on Wednesday, Feb 24 • Readings on course website • Homework 1 (due Feb 10) • Homework 3 (due Feb 10)
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EC.720J / 2.722J D-Lab II: Design Spring 2010
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