Edexcel A Level Design and Technology Question And Answers

Edexcel A Level Design and Technology Question And Answers Post Modernism (1975-now) Form over function, less is a bore, humour and personality, retro design, influences of pop culture and animal and human forms.., pop culture, childrens toys, animal and human forms, Art Deco, designs by Alessi, Philippe Stark E.g: juicy Salif lemon squeezer and kettle scale of production one-off, batch, mass, continuous built-in/planned obsolescence deliberate policy to manufacture products with a specific life span miniaturisation Reducing the size of components or products e.g: electronic devices - from CD to music streaming offshore manufacturing relocation of a factory to another country, where materials and labour is cheaper risk assessment process that considers what may cause harm to people and what can be prevented Risk Assessment Process 1. Identify the hazard, 2. Assess the risk (determine likelihood, consequence and risk rating), 3. Evaluate the risk level, 4. Find a control measure e.g: provide training before machine use, 5. Review date- this should be signed and dated by assessor economies of scale the advantages that can sometimes occur as a result of increasing the size of a business consumer society (consumerism) social inclination towards acquiring ever more goods and services One-off production the making of a single, unique product e.g: luxury cruise ship or wedding cake Advantages and disadvantages of one-off production advantages: products made of high quality and unique, employs people with high skills, workforce is engaged as every job is different disadvantages: increased expense, complex production, skilled workers required, fewer economies of scale, individual design work and consultation Hardwoods oak, mahogany, beech, jetulong, balsa Softwoods pine, cedar, larch, redwood, spruce Ferrous metals mild steel, carbon steel, cast iron What are ferrous metals? metals that contain iron Non-ferrous metals aluminium, copper, zinc, tin What are non-ferrous metals? metals that do not contain iron Alloys stainless steel, duralumin , brass What are alloys? mixture of 2 or more metals or a metal and another element Thermosetting plastics epoxy resins, urea-formaldehyde, polyester resin What are thermoplastics? they can be shaped when heated Thermoplastics PET, HDPE, PVC, LDPE, PP, Acrylic, ABS, PMMA what are thermosetting plastics? plastics that can't be reshaped when heated What are Elastomers? polymers at room temperature can be deformed under pressure and upon release of pressure, return to original shape Elastomers natural rubber, neoprene (polychloroprene rubber) What are composites? Two or more materials combined together by bonding with enhanced properties Composites glass fibre reinforced plastic GRP, carbon fibre reinforced plastic CFRP, MDF, hardboard, chipboard, plywood drawing papers layout paper, tracing paper, copier paper, cartridge paper commercial printing papers bond, coated boards mounting board, corrugated board, foam board, folding boxboard, foil-lined board What are natural fibres? fibres from plant sources and can be recycled, biodegrade and naturally reoccur natural fibres cotton, linen, wool what are manmade fibres? do not occur naturally, they are synthetic and developed in a lab manmade fibres nylon, polypropylene, and polyester What are smart materials? Materials which change physical properties in response to their environment, such as light, temperature, electricity and pressure. What are modern materials? A material that has been engineered to have improved properties as a result of man made materials and human intervention smart materials thermo-ceramics, shape memory alloys (SMA), reactive glass, liquid crystal display (LCD), photochromic materials, thermochromic materials, quantum tunnelling composites performance characteristics conductivity, strength, elasticity, plasticity, malleability, ductility, hardness, toughness, durability, biodegradability heat treatments hardening, tempering, case hardening, annealing, normalisin