RO38 TA2: design requirements Flashcards
(32 cards)
quantitative
data based on numerical facts
qualitative criteria
data based on descriptions observations or opinions
one-off production
manufacturing products one at a time
batch production
manufacturing of products in specific amounts (a batch)
mass production
rapid production of standardised products and components, often on a production line
stock forms
the profiles a material is commonly available in
metals
metals are processed into ingots then melted down into stock shapes a process requiring very high temperatures, metals are usually denser and more malleable than others
metals- alloy
a mixture of two or more metals
ferrous metals and non-ferrous
ferrous-metals or alloys that contain iron
non-ferrous- metals or alloys that do not contain iron
plastics-polymers
available in a range of stock forms depending on whether it is a thermoplastic polymer (formed by heat and can be reformed or reused) or a thermosetting polymer (formed by permanent chemical reactions and cannot be reused)
wood
wood is available in natural or man-made forms. natural wood is seasoned (carefully dried) and then shaped by wasting. width of sheets are often limited by the tree. man-made boards are produced by gluing either particles of wood or sheets of wood together.
wasting
a process that removes material
shaping
a process that involves a change in state of the material
forming
a process that changes the shape of the material without the change of state
joining
a process that is used to attach separate pieces of material together
finishing
a process that changes the surface of a material in a useful way, either protective or decorative
assembly
a process of fitting components together to make a whole product
labour costs
costs of paying people to make the product
capital costs
starting costs of setting up a facility to manufacture a product
overheads
general costs of running a business, not directly attributed to a particular product or service
market pull
when a need for a product arises from consumer demand which ‘pulls’ the development of a new product
technology push
when new technology is created it can lead to the development of a new product that are ‘pushed’ onto the market
British and international standards
standard conventions- agreed rules that set the standards used for engineering
British standards- standards that products must conform to, produced by the BSI (British standard institution)
standard symbols
CE marking is used for products throughout Europe; it means the product meets EU safety, health and environmental protection requirements
UKCA designed to replace the CE in the uk, it is not recognised in the uk market
iso develop standards to make sure products are good quality, safe and efficient
lion mark symbol is for European toy safety standards
0-3 mark means the product has safety concerns for young children