DESIGN FOR DISASSEMBLY

Design for disassembly challenge of the future, DFMA 1992, Rhode Island, BDI. 

Construction material selection (minimum use of natural resources), design for disassembly, efficient and durable envelope, durability... 

Waste reduction at the design stage (design for disassembly) and the deconstruction stage. 

Another source of design aids is the "Emnronmental Considerations in Product Design and Processing" [26], which contains guidelines for design for disassembly and recyclability, design for reusability, and waste avoidance... 

It must be kept in mind that design for manufacture and assembly and design for disassembly may sometimes be in conflict with each other. For example, snap-fits may accelerate the assembly process but impede rapid disassembly if they are not designed properly. Furthermore, safety rules and regulations, such as for consumer electronics and household appliances, require the protection of electrical circuits to avoid accidents. In other products, easy access may also encourage the theft of valuable components [32]. 

Design for disassembly design activities in which the ease of disassembly is an explicit design objective that determines the product... 

Bogue R (2007) Design for disassembly a critical twenty-first century discipline. Assem Autom 27(4) 285-289... 

However, for fuel cells more than other systems designed for disassembly, separability will be trumped by the need for intimate connections between materials are not needed for electric or heat transfer or sealing). As such, energy recovery will most likely be limited to balance of plant components (mostly polymers). 

The design of parts that can be disassembled easily (design for disassembly, DFD). 

As an aside here, in manufacturing much emphasis has been placed on design for manufacture. This can both aid and hinder design for disassembly (DFD) and the recycling process. What is good for one is not necessarily good for the other. For example, a part that is easy to fit, may not necessarily be easy to dismantle. It may be necessary to compromise so that both can be satisfied. 

New developments in polyolefin-based materials have created a family of polypropylene products with a wide range of physical properties, including the ability to be easily recycled. When utilized by automotive and product designers as a part of a design for disassembly strategy, these compatible materials will vield large sub-assemblies that can be reclaimed with a minimum of handling. 

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