Transcript Design for Disassembly

Design For Disassembly
(DfD)
By Tim Thorn
The Agenda
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What is Design for Disassembly (DfD)?
Brainstorming exercise
Explanation
How DfD works?
An Example of DfD
A brief exercise
Summary
Readings
Design For Disassembly
• Definition: “The use of assembly methods
and configurations that allow for costeffective separation and recovery of reusable
components and materials.”
Brainstorming Exercise
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How can Design for disassembly be applied
to our organization to increase
environmental awareness and cut costs?
Further Information about DfD
Reasons for Disassembly
• Enable maintenance
• Enhance serviceability
• End-of-life (EOL) objectives such as product
reuse, remanufacture, and recycling
End-Of-Life Objectives
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Most important reason to disassemble
Component reuse
Remanufacture
Recycling
Types of Disassembly
• Destructive disassembly
• Reverse Disassembly
• Two types of reverse disassembly:
–Total
–Selective
Cost-Savings with Disassembly
• Better selection of materials
• More specific identification of component
materials
• Assembly methods that provide for more
efficient and possibly automated disassembly
Benefits of DfD
• Components which are of good quality can be
refurbished or reused.
• Metallic parts can be separated easily into categories
which increases their recycling value.
• Disassembled plastic parts can be easily removed
and recycled.
• Parts made from other material such as glass or
hazardous material can easily be separated and
reprocessed.
So how does Disassembly work?
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Product is reacquired
Product taken to special DfD facilities
Each component of the product is taken off
The components are sorted
Then reused, recycled and refurbished
How can products be designed more
effectively to aid disassembly?
• Provide ready access to parts, fasteners, etc. to
support disassembly.
• Design modular products to enable modules to
be disassembled for service or re-use.
• Minimize weight of individual parts and
modules
Crow Kenneth. http://www.npd-solutions.com/dfe.html
Effective Design (Cont.)
• Use joining and fastening techniques to facilitate
disassembly (e.g., fasteners instead of adhesives)
• Minimize fragile parts and leads to enable re-use and
re-assembly.
• Use connectors instead of hard-wired connections.
• Design to enable use of common hand tools for
disassembly.
Crow Kenneth. http://www.npd-solutions.com/dfe.html
What industries use DfD?
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Construction
Technology
Furniture Manufacturing
Electronic Manufacturing
Automobile Manufacturing
Real world application
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Cell Phone Manufactures
Initially too costly to disassemble
Use of DfD
Phones will soon take seconds to disassemble
Exercise
• What is Desgin for Disassembly?
• Why do we use DfD?
• What can be designed more effectively
to aid in disassembly?
• What industries use DfD?
Summary
By designing products that are easy to
disassemble we can conserve natural
resources, and if applied correctly can cut
costs.
Readings List
• Billatos, S.B. 1997, Green Technology and Design for the
Enviroment.
• Desai, Anoop. Mital,Anil Journal of Manufacturing Technology
Management; 2005, Vol. 16 Issue 7, p712-732, 21p
• Dowie-Bhamra, Tracy. University of Manchester
http://www.co-design.co.uk/design.htm
• Jana, Reena. Business Week Online Can Design
Change the World? 10/26/2006
• Crow, Kenneth. http://www.npd-solutions.com/dfe.html