DESIGN FOR DISASSEMBLY

PRESENTED BY: Sumra NoorAdnan ShabbirFatimah Nawaz

INTRODUCTION“Design for Disassembly (DFD) is the process of designing products so that they can be easily, cost-effectively and rapidly taken apart at the end of the product's life so that components can be reused and/or recycled.”

• A framework of actions

• It involves designing a product to be disassembled for easier maintenance, repair, recovery and reuse of components/materials.

• A part of Design for the Environment (DFE) and sustainable product design.

(Steven M. Greer)

“Alas, our technology has marched ahead of our spiritual and social evolution, making us, frankly, a

dangerous people.” 

WHY DESIGN FOR DISASSEMBLY

• Reduce production costs.

• Greater technical efficiency

• Greater flexibility during product development

• Reducing the scale of resources

Design for ACTIVE DISASSEMBLY

• Involves the disassembly of components using an all-encompassing stimulus, rather than a fastener, specific tool or machine.

• Offers the cleanest, non-destructive, quick & efficient component separation

It involves:• use of smart materials

• account for both the product architecture and fastener selection

smart materials • Self-disassembly at specific temperatures

• Shape Memory Polymer and Shape Memory Alloys

smart materials • Screws, bolts and rivets

• From deformed to original shape

Shape memory polymer• Polyurethane• Polyethylene tetraphthalate (PET)

Shape memory alloy• Nickel-titanium• Copper-aluminum-nickel

principles for Design for Disassembly

• The selection and use of materials

• The design of components and product architecture

• The selection and use of fasteners

Points to keep in mind for active disassembly

• Choose recycling-compatible materials

• Avoid using materials which require separating before recycling

• Use as few components and same component types as possible

• Integrate components (which relate to the same function) where possible.

• Use of standardized fasteners

• Make components easily separable.

• Avoid permanent fixing (use of adhesives, co-molding)

• Avoid paint 

 

• Avoid toxic or harmful materials and chemicals

• Identify material types

• Provide Guidance and Accessibility

WHAT DO SOME COMPANIES DO WITH THE PRODUCTS AT THE END OF THEIR LIFE

Along with having so many benefits, The Design For Disassembly adds to the green environment and protects it by allowing the products to be Environment Friendly.