Information Systems and the Environment (2001) / Chapter Skim
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Modular Design for Recyclability: Implementation and Knowledge Dissemination
Modular Design for Recyclability: Implementation and Knowledge Dissemination
Pages 105-114
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From page 105... ...
It is based on the premise that proper consideration of recyclability can enhance the ecology of industry by extending the utilization of resources and by reducing waste, energy requirements, and other environmental loads. This paper explores the recyclability of products based on the author's efforts at the Stanford University Center for Professional Development.
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From page 106... ...
The Stanford Instructional Television Network covers modular design for recyclability in a graduate-level course on design for manufacturability. In this course, students form teams and apply various methodologies to real-life product development examples.
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From page 107... ...
Environmental impacts should be reviewed in a standard manner, along with conventional product requirements such as cost and functionality. This is done most effectively when environmental considerations can be integrated into standard design methodologies such as QFD, functional analysis, and DFA.
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From page 108... ...
Designers need to force themselves to actively consider environmental impacts as part of the product development process. Functional Analysis Functional analysis is a key tool in "value engineering," a practice originally developed in the United States during the 1950s and which contributed significantly to product development in Japan.
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From page 109... ...
The diagram is the reverse of the assembly fishbone diagram, which is used to document the assembly process. Fish-bone diagrams can help designers consider both assembly and recyclability criteria at the same time.
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From page 110... ...
Another shortcoming of the fish-bone diagram is that it fails to help engineers select materials and assembly designs that promote the recyclability of a product family. The Recyclability Map A recyclability map provides metrics that can help designers select appropriate materials and construct assemblies that improve recyclability.
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From page 111... ...
The construction of the recyclability map for the inkjet printer was possible only with detailed scrap rate information, which was obtained from the recycling plant. Where scrap rate information is not available, the rates can be estimated from material selection and recyclability data for each set of materials used in the design.
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From page 112... ...
As part of its future efforts, the Stanford University Center for Professional Development plans to work on defining a material recyclability database, developing a method to predict scrap rates, and developing an Internet-accessible tool for constructing reverse fish-bone diagrams and recyclability maps. Disassembly Time 100 80 60 40 20 o FIGURE 5 Reduction in disassembly time.
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From page 113... ...
Thanks also go to industrial partners Hewlett-Packard, Xerox, and Matsushita, as well as Burton Lee and the members of Stanford University's 1996 ME217 HewlettPackard project team who initiated the development of the recyclability map. REFERENCES Hauser, J.R., and D
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