In this game, players will determine whether various materials are commonly used in engineering applications. Players will answer ✅ if the material is relevant to engineering or ❌ if it is not. Test your knowledge of engineering materials!
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Engineering designs require materials with certain Properties and characteristics
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Engineers DO NOT need to know how to make sense of the tens of thousands of products available
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Materials properties can make or break an engineers product or career so selecting the right materials is crucial
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materials are the substances from which ideas and designs are made
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Materials can be categorized by their composition as pure elements,compounds, or mixtures
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metallic, ceramic,organic,polymeric, and composite are classified materials
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recyclability and cost are NOT important to keep in consideration for engineers
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Material selection is based upon mechanical,thermal, electromagnetic, and chemical properties
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Raw Materials undergo various manufacturing processes in the production of consumer goods
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materials selection criteria include: In- service performance, deterioration, and economies
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materials are closely connected with devices
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societies are independent in advancement and don't depend on the available materials and their use
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early civilizations were designed by their level of materials development
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arrangement of internal components, subatomic, atomic, microscopic, and macroscopic are all parts of structure
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mechanical and electrical are the only types of properties
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behavior in a particular application is the performance
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processing: method of preparing material
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ceramics: good conductors of electricity and heat, susceptible to corrosion, strong but deformable
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metals: good conductors of electricity/heat
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polymers: very large molecules, low density/weight, and may be extremely flexible
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biomaterials: consist of one or more material type, and are designed to display a combination of properties of each component
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semiconductors: electrical properties between conductors and insulators
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composites: consist of one or more material type
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there are only 3 types of materials commonly used in engineering applications
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metals was the most advanced during the iron and bronze age
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metals DO NOT form most of the known elements in the periodic table
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various metals that are mined form the earth and are known as BRONZE ore: magnetic and Hematile
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Smelting is the process of pulverizing and mixing iron ore with coal and then heating the mixture in a blast furnace at temperatures of 2,000 degrees F
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The cooling causes the oxygen atoms to separate from the iron atoms
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the result from the heat causes molten iron and unwanted materials called slag
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pig iron contains too much carbon and is to brittle
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other elements are added to the molten iron to remove its impurities resulting in a low-carbon steel alloy
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an alloy is a mixture of two or more elements with one of those elements being a metal
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if iron is alloyed with less than 10% carbon by weight the result is a material called steel
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steel is one of the least widely used materials in engineering
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of all nonferrous metals gold is possibly the most well known because of its status as a precious metal
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a precious metal is one that is relatively source
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A malleable metal can be shaped or formed without breaking by means of hammering or pressure
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copper was one of the LAST nonferrous metals to be extracted from the earth and hammered to form tools and weapons
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copper is widely used in devices that conduct and transmit heat and electricity
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when copper is alloyed with bronze the result is brass
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brass is extensively in musical instruments
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brass will tarnish over time
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the BRONZE alloys are ductile and can be drawn into wire
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one of the least abundant metals on earth Is aluminum
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pure aluminum is very weak and not used in traditional engineering
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titanium is a metal element known for more than 200 years but only recently used in engineering
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titanium is complex and expensive
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hardwoods have a much colder look
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woods are harder to machine and shape than metals and plastics
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common species of softwood tree include hard maple,cherry,white oak,white ash, etc..
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common species of hardwood trees include: pine,spruce, fir hemlock, and cedar
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most hardwood trees are evergreen and have needle-shaped leaves
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ceramic cant withstand compression loads without exhibiting noticeable deformation
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white wear, structural clay, refractories, and glass are some types of ceramics
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the word refactory means to absorb heat
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glass is made from sand
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atoms can join to make molecules
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the word polymer and plastic mean the same thing
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some elastomers can be reshaped
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plastics can ONLY come from synthetic sources
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if a plastic can be reheated and referred it is a thermoplastic
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types of thermosets include: polyurethane,polyester resin, and foamed polyurethane
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thermosets CAN be recycled
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composites is a LIQUID
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composites are lightweight and strong
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composites are lower costs and easy to manufacture
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some places where composites are used are aerospace, electrical, energy, sports, strong tanks, etc...
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