Section 4 Flashcards
Try think of examples for each thing!
What is a static load?
What is a dynamic load?
Static - load that does not move e.g. book on a table
Dynamic - load that moves e.g. book dropped onto table
Tension?
pulling force applied either side of a material
Compression?
pushing force on either end of a material, causing it to become compacted
Torsion?
twisting force. two ends of the material rotate in opposite directions
Bending?
force applied to material either side of a fixed position
Shear?
force acts on an object perpendicular to length
What is reinforcing?
A way if strengthening a material by adding material to improve its ability to withstand force and stress
What is webbing?
strong fabric woven into strips from yarns.
What is laminating?
bonding two or more materials to improve strength, stability, functionality, and flexibility
What is fabric interfacing?
used in textiles to reinforce specific areas to make them more rigid
Two types of fabric interfacing?
Fusible and sew-in
What is folding and bending?
reshaping a material to improve its properties.
What is carbon footprint?
amount of CO2 produced during a process
What is ecological footprint?
measures the impact of a person’s life on the environment
What is social footprint?
measure of the impact a company’s social policies have on its employees/partners/society as a whole
What is desertification?
When land dries out and is no longer able to support vegetation
Underground mining?
less visual impact, but dangerous for miners and can lead to sinkholes
Surface mining?
more visual impact, creates loss of habitat
What are the 6 R’s in order of their impact on the environment? (Least impact to most impact)
Refuse - Rethink - Reduce - Reuse - Repair - Recycle
Refuse?
Asking whether the product is necessary
Rethink?
Redesigning a product to have a lesser impact on the environment
Reduce?
Often the result of rethink. Making products lighter + stronger, reducing complexity / number of parts, making parts easier to recycle.
Reuse?
Primary recycling: reusing a product for the same purpose
Secondary recycling: reusing a product for a different purpose
Repair?
extends a product’s life instead of replacing it.
repairing has become harder over the years as many products now require specialist tools and knowledge to repair.
Recycle?
Tertiary recycling: materials recycled this way are much lower quality than the original.
the material is reprocessed
Planned obsolescence?
A company that builds a product to last only for a sort time so the consumer is forced to by the latest version
One off production?
Bespoke items for individual clients, cannot be bought off the shelf. High unit cost, low set up cost, flexible, little to no automation, pretty much fully hand crafted
Batch production?
when a certai number of products is required. they will be produced together. more automation than one off. templates/jigs/patterns are used to save time and ensure all products are identical
Mass production?
for items that are in constant use and design of the item does not change. uses a dedicated production line, lots of automation and little skilled workers. high volume of goods produced
Continuous production?
similar to mass production? but products tend to be made to create stock. operates 27/7/365, low skilled staff who operate in shifts.