hw 2 solutions

hw 2 solutions - HW 2 Solutions Grading Problems 2.3 2.8...

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Unformatted text preview: HW 2 Solutions Grading: Problems 2.3, 2.8 and 2.11 : 3 points each. Part B: 1 point. Part B: One of the good examples of material selection (submitted by Brian Matthews): One item found in my home that its material interested me was my teapot. To begin, the pot is composed of two different metals. The bottom surface that contacts the burner is made of copper. It is an excellent conductor of heat yet it is ductile and easy to shape. The yield strength of copper is not very high but I suppose its conductivity is the most important property. The other metal used for the sides and top is stainless steel. It is resistant to rust and corrosion while being aesthetically pleasing. The metal most importantly serves as a strengthening agent to the pot's integrity. The metal is ductile so that it can take a certain shape but has higher yield strength so it will not plastically deform. Lastly, the handle is made of plastic and serves as an insulator from the hot pot. I believe that it is a thermoset plastic due to its rigidity under high temperature stress. The combination of these materials creates an effective and user friendly teapot. ...
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