1. Explain how an understanding of the 4 classes of materials and their general properties aid...

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Mechanical Engineering

1. Explain how an understanding of the 4 classes of materialsand their general properties aid in the initial selection orelimination of materials suitable for a specific application. I.E.First outline some of the main general properties of each class, DONOT GIVE EXAMPLES OF COMPONENTS AFTER EACH CLASS SECTION! Thendescribe how you would apply that knowledge to choose a suitablematerial for ONE specific component. ONLY ONE COMPONENT SHOULD BEPRESENTED AFTER YOU HAVE OUTLINED THE GENERAL PROPERTIES. I.E, SAYWHY ONE CLASS COULD NOT BE USED AND WHY ANOTHER CLASS CAN BEUSED.

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As we all know different problems needed to be solved require use of many type of materialsdifferent applications require different types of materialsconsider a problem of making a window for a house situated near sea due to the content of salt in the atmospheric air around the house we cannot use a metal window because metals react with salt content and moisture content in the air and will be affected by corrossionso we can eliminate the option of using meats of this perticular application and use non reactive materials like ceramics or polymers for the samethis is how the selection of material is done so generally if we know the properties of each kind of materials available it will be easy for us to select the best amoung those The main properties of four classes of materials are 1 METALS There are many metals which you are familiar with copper pipes and wire aluminium saucepans and cast iron stoves Metals may be mixed with other elements especially other See Answer

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