IB Design Technology Topic C4.1.5 Environmental Impact of Dfm Strategies Revision Notes (HL)

IB Design Technology Topic C4.1.5 Environmental Impact of Dfm Strategies Revision Notes (HL) | RevisionDojo

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The Environmental Bill Is Written at the Design Stage

A DfM decision made in an afternoon determines the product's environmental impact for its entire life, across three stages:
1. Manufacture: the energy burned and the material scrapped in making it.
2. Use: how long it lasts before it is replaced, and whether a failure kills the whole product or just one part.
3. Disposal: whether the materials are recovered, or buried.

What Each Strategy Actually Saves

The three strategies do not reduce impact in the same way, and each one bites at a different stage of the product's life.
Design for process cuts impact at manufacture.
1. A part designed to suit its process is made right first time, so fewer units are scrapped, less material is wasted as swarf or flash, and less energy is spent remaking rejects.
2. Choosing a near-net-shape process such as moulding over one that cuts material away also removes waste before it is ever created, which beats recycling it afterwards.

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(on a website) an arrangement whereby access is restricted to users who have paid to subscribe to the site.

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Lorem ipsum dolor sit amet, consectetur adipiscing elit. Sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat.

Duis aute irure dolor in reprehenderit

Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.

Note

Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam quis nostrud exercitation.

Excepteur sint occaecat cupidatat non proident

Nemo enim ipsam voluptatem quia voluptas sit aspernatur aut odit aut fugit, sed quia consequuntur magni dolores eos qui ratione voluptatem sequi nesciunt. Neque porro quisquam est, qui dolorem ipsum quia dolor sit amet, consectetur, adipisci velit.

Tip

Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat.

Lorem ipsum dolor sit amet, consectetur adipiscing elit.
Sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.
Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris.
Duis aute irure dolor in reprehenderit in voluptate velit esse cillum.

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The Environmental Bill Is Written at the Design Stage

A DfM decision made in an afternoon determines the product's environmental impact for its entire life, across three stages:
1. Manufacture: the energy burned and the material scrapped in making it.
2. Use: how long it lasts before it is replaced, and whether a failure kills the whole product or just one part.
3. Disposal: whether the materials are recovered, or buried.

What Each Strategy Actually Saves

The three strategies do not reduce impact in the same way, and each one bites at a different stage of the product's life.
Design for process cuts impact at manufacture.
1. A part designed to suit its process is made right first time, so fewer units are scrapped, less material is wasted as swarf or flash, and less energy is spent remaking rejects.
2. Choosing a near-net-shape process such as moulding over one that cuts material away also removes waste before it is ever created, which beats recycling it afterwards.

Definition

Paywall

(on a website) an arrangement whereby access is restricted to users who have paid to subscribe to the site.

anim nostrud sit dolore minim proident quis fugiat velit et eiusmod nulla quis nulla mollit dolor sunt culpa aliqua

Duis aute irure dolor in reprehenderit

Note

Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam quis nostrud exercitation.

Excepteur sint occaecat cupidatat non proident

Tip

Lorem ipsum dolor sit amet, consectetur adipiscing elit.
Sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.
Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris.
Duis aute irure dolor in reprehenderit in voluptate velit esse cillum.

Unlock the rest of this chapter with a free account

End of article

A. Design in theory8 subtopics

B. Design in practice8 subtopics

C. Design in context8 subtopics

IB Design Technology Topic C4.1.5: Environmental Impact of Dfm Strategies Notes

A. Design in theory8 subtopics

B. Design in practice8 subtopics

C. Design in context8 subtopics

The Environmental Bill Is Written at the Design Stage

What Each Strategy Actually Saves

anim nostrud sit dolore minim proident quis fugiat velit et eiusmod nulla quis nulla mollit dolor sunt culpa aliqua

Duis aute irure dolor in reprehenderit

Excepteur sint occaecat cupidatat non proident

Unlock the rest of this chapter with a free account

The Environmental Bill Is Written at the Design Stage

What Each Strategy Actually Saves

anim nostrud sit dolore minim proident quis fugiat velit et eiusmod nulla quis nulla mollit dolor sunt culpa aliqua

Duis aute irure dolor in reprehenderit

Excepteur sint occaecat cupidatat non proident

Unlock the rest of this chapter with a free account