Evaluation
CCEA A-Level Technology and Design 8900
Material Selection and Wood
Metals
Plastics
Composite and Emerging Materials
Processing Materials
Product Analysis and Design Communication
Design for Manufacture, Quality and Safety
Electronic Control SystemsOption A
Topic overviewControl systems, feedback and electronics safetyResistors, Ohm's law and power ratingsCapacitors and RC timingPotential dividers, sensors and comparatorsSwitches, pull-up and pull-down resistorsOutput devices and LEDsTransistors, Darlington pairs and thyristorsLogic gates, truth tables and flip-flops555 monostable and astable timers
Microelectronic Control SystemsOption A
Topic overviewMicrocontroller systems, ADCs and DACsStrain gauges and bridge circuitsOptical switches, encoded discs and Schmitt triggersOp-amp amplifiers and gainZener diodes and voltage regulatorsKarnaugh maps and binary countersSeven-segment, LCD and dot matrix displaysPIC flowcharts and programmingDC motors, stepper motors and driver circuits
Mechanical and Pneumatic ComponentsOption B
Topic overviewOpen and closed loop mechanical and pneumatic controlSafe working with compressed air and mechanismsLevers, linkages and momentsGear types and gear trainsPulleys, belts, chains and shaft fixingsCams, cranks and converting motionCompressed air supply and pneumatic valvesCylinders, shuttle valves, restrictors and reservoirsPneumatic circuits for logic, timing and speed control
Mechanical and Pneumatic SystemsOption B
Topic overviewHydraulics, system limitations and plant safetyTorque, work, power and air consumptionVacuum handling, proximity sensors and 5/3 valvesSequential and cascade pneumatic circuitsCam profiles and follower displacement diagramsGear geometry, pulley blocks and ratchetsToggles, treadles, shafts and couplingsFriction, brakes and clutchesBearings, lubrication and seals
Designing and Manufacturing ProductsOption C
Topic overviewResearch, questionnaires and specificationsIdea generation, critiques and computer simulationManufacturing planning and product evaluationCFRP, GRP, Kevlar and tungsten carbideSmart materials, nanotechnology and biophotovoltaicsIsometric, perspective and assembly drawingLaminating, steam bending, cutting and printing processesRisk assessment and product safety lawScales of production, JIT and cell productionQuality assurance, ISO 9001 and continuous improvementDesign influences and intellectual property rights
Product Design in Industry and SocietyOption C
Topic overviewLife-cycle environmental impact and climate changeThe 6Rs, waste and environmental legislationSustainable metals, plastics and degradable polymersProduct life cycles, consumer types and relaunchesCAD, CAM, 3D scanning and quick-change mouldingMarket pull, technology push and market strategyPrice, place and promotionJigs, fixtures and ICT in quality controlDesign for maintenance, inclusion and scale productionRendering, typography and presentationDyson, Baylis, Memphis and Apple
Product Development
Product and System Design and Manufacture
Material Selection and Wood
Manufactured boards
- 3 things to know
- AS 1 Paper 1
Overview
Plywood, marine plywood, blockboard, chipboard, hardboard and MDF, how each is made, sheet sizes, knock-down fittings, and their advantages and drawbacks.
What you need to know
Answer each one before you reveal it.
Your recallNot started
Evaluation
Evaluate chipboard as a material for kitchen worktops.
Key term
What are manufactured boards?
Questions from this subtopic
Each one with the model answer underneath.
- 1
What are manufactured boards?
Model answer
Manufactured boards are sheet materials made from wood veneers, strips, chips or fibres bonded with adhesive. Many use timber waste or low-grade wood.
- 2
State the main advantages of manufactured boards over solid timber.
Model answer
Manufactured boards come in large, flat sheets far wider than any plank. The boards are stable and do not warp, split or shrink as solid timber does. Manufactured boards are usually cheaper and of consistent quality.
- 3
In what sheet size are manufactured boards usually supplied?
Model answer
Manufactured boards are usually supplied in sheets of 2440 mm × 1220 mm. Common thicknesses range from about 3 mm to 25 mm.
- 4
How is plywood made?
Model answer
Plywood is made from an odd number of thin veneers glued together. The grain of each layer runs at 90° to the layer beside it.
- 5
Why does plywood have an odd number of layers with alternating grain?
Model answer
The crossed grain gives strength in both directions and resists splitting. An odd number of plies keeps both face grains running the same way, so the board stays balanced and flat.
- 6
What makes some grades of plywood suitable for boat building and outdoor use?
Model answer
Exterior and marine grades of plywood are bonded with waterproof adhesive. The layers resist separating when wet, so the board stays strong.
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