Briefly what I wrote. I did OK overall, hardest test in AQA Unit 3 so far. Very specific exam.
Hardness test - centre punch with hammer. Measure depth of the holes and compare/contrast the appearance.
Toughness test - whack it with a hammer in vice. Breaking/bending way of measuring and comparing.
This part I did good in, memorised it before.
CAD part I wrote a lot about simulations for materials, photo-realistic rendering, 3D modelling, component functions in 3D programs that can be adjusted etc. Said simulations for manufacturing with die cutting for example for cereal boxes which the designs for packaging (nets in designing process). Expanded on each point, referenced Google SketchUp, ProDesktop for 3D modelling and rendering in ProDesktop for material aesthetics.
Did ok, wrote a lot more but forgot it.
Very briefly for MIG welding I drew the the whole process of the feeding metal, welding two metals. Forgot to mention shield gas and the charged metal electrode (arcs). Said the weld is very strong and will withstand a big load make the chair suitable for children and adults etc.
Soldering I drew the whole process with the heated soldering alloy which is manually fed and melted down to drops placed on the conducting joints. Said it was suitable because the solder alloy has a flux which coats the finished joint, and it is a very good conductor of electricity etc.
Did ok, didn't revise welding processes at all.
For Crude oils I said you can obtain polymers and fuel for vehicles such as petrol and diesels. I mentioned Toyota with their Prius cars that have been influenced in a way where the it is designed to use as little of those fuels as possible by mainly powering the vehicle up for electricity. Linked it to Tesla how they been influenced to do the same however with their little niche, design a high quality, high performance and no use of fuels from crude oils, both points being relevant because crude oil is not sustainable and the source will run out so the firms will have to adapt their designs either way in the future. Also beneficial for consumer because high cost for car however no fuel costs. Then I said some vehicle company uses biopol in the interior of the vehicle as they are biodegradable and wont take 700 years to degrade in designated areas for waste and biopol is not obtained from crude oil but from natural sustainable sources. I expanded a lot more on each point.
Did good, felt like I made good expanded points.
Smart materials I said thermochromatic pigment can be used in materials to make thermochromic materials, I applied to to a kettle, if you had a thermochromic strip you could place it with the handle so the user will know whether it is safe to handle the kettle due to temperature and thermal burns or scalding. Memory alloy for braces are safe because it doesnt react and is non-corroding and don't react with anything in your mouth and it will safely adjust from is flexible pose in order to function sufficiently. Another one for safety, I mentioned polymorph, usage would be for adults to mould cutlery ergonomic handles with their children's approximate anthropocentric measurements so that they cant lob their spoons at people whilst eating, this is bad if the child is using metal forks and is feeling a bit edgy and decides to throw it at someone.
Did ok, expanded on everything to justify my points, felt like I did not mention enough suitable smart materials, usually they mention some smart materials that you write about.
Flat pack furniture fabrication, said it benefits consumer because less transportation costs, more convenience, huge product portfolio for the consumer, different designs/styles of the same product because of the manufacturing ease, convenience big factor because product comes packed in corrugated card boxes which are easily fitted in personal vehicles, no need to pay for big transport vehicles for already built furniture that is very heavy. Manufacturer easily produces the product without a big number of skilled employees, the products are set through CNC machines such as laser cutters or routers and mostly performed by second generation robotics. This means fast production, lower cost than hiring employees with imperfections in products also, lower transportation costs to outlets, easy stock storage and a lot of stock is able to be stored due to small packaging, all of this briefly means less costs and higher profits. Knock down joints allow the product to be easily assembled by any type of average consumer, allows packaging to be smaller, links to the transportation costs again and convenience, didn't give examples for specific ones. Said that they're usually made through injection moulding which is a fast big industry process which adds to the speed of production for manufacturer - can be just put in a PP bag sealed with heat and thrown into the packaging so that the user makes it. Pictograms are used by manufacturers for easier installations.
Did good, wrote a lot, tried not to waffle on but keep everything relevant and knowledgeable.
This is only a brief of what I wrote in my exam, I think that's all the questions that I answered, I missed quite a bit of valuable marks but I didn't do exactly bad. This test was difficult in my opinion in comparison to all past papers that I looked at prior. Tried to squeeze in as my knowledge as I could whilst explaining my points and each question had two parts of which one were extremely specific and if you look at the spec how the **** are you supposed to know everything, it's a bit of a gamble. I'm hoping my exam marker isn't a dick. Depends on grade boundaries. Not too worried.