DT - selection of materials or components

What aesthetic factors are considered in a design?

shape, size, colour, surface, finish and texture

What is functionality?

The degree to which a system performs its intended function

What questions should designers consider about availability?

- Are the materials easy to source?

- Are they widely available and quick to deliver

- Are they supplied in stock forms and sizes

How can availability affect price?

Rare materials may cost more

What are the advantages of buying in bulk?

reduced cost per unit

What are the disadvantages of buying in bulk?

- upfront costs

- extra storage space

-potential wastage

What social factors do designs have to consider?

- using materials from sustainable resources

- if the material is sourced ethically

- using recycled products

What ethical factors do designs have to consider?

- human rights

- making something functional, reliable an usable

What is the FSC?

The Forest Stewardship Council (FSC), established in 1933 in response to those concerns over global deforestation. It is an international non-profit, multi-stakeholder organization that promotes responsible management of the world's forests.

What environmental factors do designs have to consider?

- is it possible to use sustainable materials

- can the materials be sourced locally

- how easily can the materials be transported

- can they be reused, recycled or are they biodegradable

Compression

compression occurs when a pushing force is applied to either end of a material

Bending

Bending is both tension and compression forces on either side of the object.

Torsion

occurs when a material is twisted

Tension

Occurs when a pulling force is applied to either end of the material

Shear