Back to Topic 3.1 — Material classification
3.1.3Design Technology SL3 flashcards

Choosing a material

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Card 1 of 33.1.3
3.1.3
Question

Why does the guide call material selection complex and challenging?

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All 3 Flashcards — Choosing a material

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Card 1concept

Question

Why does the guide call material selection complex and challenging?

Answer

Because the requirements conflict — light fights heat-resistant, warm-looking fights damp-proof — so no candidate satisfies every one and the designer must decide which matter most.

Card 2concept

Question

What four things are weighed when selecting a material?

Answer

Physical, chemical and mechanical properties, plus aesthetic characteristics. The first three are measured; aesthetics are judged against the brief.

Card 3concept

Question

Which requirements eliminate a material rather than being ranked?

Answer

Safety requirements — food contact, flammability, electrical insulation — anything that would make the product fail in use, and anything a standard requires.

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