design for disassembly (dfd) by tim thorn. the agenda what is design for disassembly (dfd)?...
TRANSCRIPT
The Agenda• 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 cost-effective separation and recovery of reusable components and materials.”
Brainstorming Exercise• How can Design for disassembly
be applied to our organization to increase environmental awareness and cut costs?
Reasons for Disassembly
• Enable maintenance• Enhance serviceability• End-of-life (EOL) objectives such
as product reuse, remanufacture, and recycling
End-Of-Life Objectives
• 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?
• 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
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?
• Construction• Technology• Furniture Manufacturing• Electronic Manufacturing• Automobile
Manufacturing
Real world application• 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