Design For Disassembly (DfD) By Tim Thorn

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?

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 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.

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.

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, p , 21p Dowie-Bhamra, Tracy. University of Manchester Jana, Reena. Business Week Online Can Design Change the World? 10/26/2006 Crow, Kenneth.