Technology Flashcards
(103 cards)
Ferrous
Metals which contain iron, is magnetic and rusts
Nonferrous
Metals which don’t contain iron so are not Magnetic and don’t rust
Alloy
A mixture of metals with other elements, to improve upon its properties or working performance
Natural-Hardwood
Deciduous trees
Grow slower
More expensive
More dense
Close grain
Natural-Softwood
Coniferous trees
Grows quicker
Less expensive
Less dense
Wide grain
Man made-manufactured boards
Are left over pieces of wood pressed with glue
Disadvantages of natural wood
-natural defects
-knots
-warps, twists, bows and splits
-limited by the size of the tree
Advantages of man-made wood
-Available in large sheets
-No natural defects
Disadvantages of man-made wood
-Edges need to be finished
-Not as aesthetically pleasing
Strength
force is applied to material without it bending, shattering and deforming in anyway
Hardness
The ability of a material to resist scratching from wear to tear, bending and indentation
Brittleness
Materials can not withstand much stretching and will crack, brake and change shape
Toughness
The ability to resist breaking or shattering
Durability
The ability to withstand repeated use, wear and tear, weathering and corrosive attack
Ductility
The ability of a material to change shape (usually stretching)
Malleable
The ability of a material to be hammered
Ergonomics
how a product interacts with the user
Aesthetics
It’s the appearance of the product (colour, shape and texture)
Design process steps
Design opportunity
Research
Design brief
Specification
Idea generation
Development
Manufacture
Testing and evaluation
Design opportunity
A problem or scenario you wish to solve by designing a product
Research
Looking at existing solutions to identify areas of improvement or design strength
Design brief
A short statement outlining what you hope to achieve
Specification
A list of specific requirements, the product will do, have or be
Idea generation
Coming up with initial ideas and a lot of ideas should be considered