Bitesize Resistant Materials Flashcards
Why are hardwoods called hardwoods?
Because of their cell structure
What type of trees do softwoods come from?
Coniferous
What do ferrous metals contain?
Iron
What do we call a mixture of two or more metals, or elements such as carbon?
Alloy
How many times can thermoplastics be heated and shaped?
Many times
What are composite materials made of?
A combination of a reinforcing material and a suitable bonding agent
What are smart materials?
Smart materials react to a stimulus, eg. temperature, moisture
What sort of smart materials react to changes in light levels?
Photochromic pigments
If a material can permanently deform in all directions without cracking it is…
Malleable
If a material can withstand sudden blows or shocks without breaking it is…
Tough
Which component is used when there is only access to one side of a material?
Pop rivets
Knockdown fittings are ………………. joints
Temporary
What method of joining two pieces of metal along a joint requires using no filler?
Welding
Can MDF be stuck together with PVA?
Yes
What sort of adhesive should be used for joining acrylic?
Acrylic cement
Who sets the brief for designer to work to?
The client
What does anthropometrics mean?
Anthropometrics is the study of the sizes of people in relation to products
What does ergonomics mean?
Ergonomics is the relationship between people and the products which they use
In orthographic projection, which view is called the plan?
Above
What is a life size working model of a design used for testing (development and evaluation) called?
Prototype
What is quality of design?
How well the product meets the needs of the user
What is quality of manufacture?
How well the product has been made
What does being aware of consumer demand mean?
Finding out what people want, then designing products that will suit them
To ensures after of the product when it is used, the designer needs to check…
That the product is strong enough to support the loads involved
What should a designer do if there is a risk that someone could be harmed while using the product?
Redesign the product
All those involved in product manufacture have a responsibility to use safe working techniques in order to avoid harming…
Themselves and others
What should power tools be isolated from?
Electrical supply
What is the purpose of a risk assessment?
To outline any hazards
What kind of planning chart shows the tasks involved in making a product, with any overlaps between different tasks?
Gantt chart
When marking out, you need something flat and straight to measure from. What is this called?
A Datum Surface or a Base Line
What tool is used to to check that one surface is at right-angles to another called?
Try square
What should you use to mark a line parallel to the edge of a piece of metal?
You use odd-leg callipers
Fabrication processes can be….
Permanent or temporary
What is it called when wood is put between two mounds and and bent into shape?
Laminating
In which method of deforming is sheet plastic placed between the two halves of a mould, which are then heated and pressure applied?
Compression moulding
What type of production is when hundreds of identical products are made, usually on a production line?
Mass production
What is the main difference between mass production and continuous flow?
In continuous flow, the production line is kept going 24 hours per day
What does CAD stand for?
Computer Aided Design
How can ICT be used in design?
Drawings, graphics and diagrams can be produced and edited using graphics software
What are parallel lines which extend out from two points on the drawing called?
Extension lines
What is market research?
Market research is asking people about what sort of products they want
What is meant by a moral issue?
Any adverse impact the product might have on other people
When consumer ideas are produced in response to market forces, this is called…
Consumer pull
When products are re-designed because of changes in materials or manufacturing methods, this is called…
Technology push
At which stage in a product lifecycle do sales, and profits, start to fall?
Decline
How many stages are there in a products lifecycle?
4
What is a formal rule adopted by parliament?
A law
What symbol shows the product has been made to British standards?
BSI Kite Mark
Why are softwoods cheaper than hardwoods?
Grow quicker
