DT Section B Flashcards
Force of stress Te_____
Tension
Force of stress C__________
Compression
Force of stress B______
Bending
Force of stress To_____
Torsion
Force of stress S___
Shear
Describe Tension
A pulling force
Describe compression
A pushing force
Describe bending
Forces at an angle to the material
Describe torsion
A twisting force
Describe shear
Forces acting across the material
What are the three main categories of wood
Hardwood
Softwood
Manufactured board (MDF)
What are the six R’s
Reduce
Re-use
Recycle
Repair
Refuse
Rethink
Define Reduce
To make a smaller number or amount of something
Define Refuse
To decline or indicate that one is willing to do something. Declining the use of metal as it increases social footprint and damages the environment
Define Re-use
Action of using an item for its original purpose. Can you reuse the milk bottle for something else?
Define repair
Repairing a product when it’s broken or worn is a way of extending its life/use and delaying the purchase of a new product
Define recycle
Converting waste materials into a new object or material
Define rethink
Reviewing a decision or conclusion. Can a decision be made to make the product work with less environmentally damaging materials?
Define the term social footprint
Social footprint is when companies have an obligation to protect the environment by reducing their ecological footprint wherever possible. It is also a measure a company has on its social policies towards employees, partners or subcontractors.
What is felling?
The process of cutting down trees
What is debarking
The removal of bark and branches creating a log
What is conversion
The debarked and felled wood is cut into manageable lengths, making it easier to handle
What is seasoning
Once the wood is converted into a workable form, it is seasoned meaning that the moisture content in the wood is reduced
What are the 6 types of joints
Dowel
Finger
Mitre
Housing
Mortise and tenon
Butt
What is a prototype
A prototype is an original model on which something is patterned. It is used to test a concept or a process. It is also used to evaluate a new design. For example, a concept car
What is a batch
A completed group, collections or quantity of something. For example a batch of cookies
What is mass production
The manufacturing of large quantities of standardised products, often using assembly lines of automation technology. For example, boxes being produced
What is continuous production
When a product is manufactured continuously. Non stop. 24/7 and 365 days a year. For example, Heinz beans
