DfM and the environment
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Flip to reveal answersWhich life-cycle stage does each DfM strategy change?
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Question
Which life-cycle stage does each DfM strategy change?
Answer
Process changes manufacture; assembly changes manufacture and distribution; disassembly changes use and disposal.
Question
Which strategy has the largest environmental leverage?
Answer
Design for disassembly, because repair and upgrade extend the use stage. A three-year life becoming ten avoids two whole products.
Question
Give a DfM change that is not green.
Answer
Bonding two different materials to reduce the parts count: assembly is faster and cheaper, and neither material can be recovered at the end.
Question
In what order should the three strategies be applied?
Answer
Find the dominant life-cycle stage, remove parts, make the shapes easy to produce, then check it can still come apart.
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Topic 12.1 hub
Design for manufacture
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