During the past few lessons, we have discussed some of the popular materials that engineers use when designing new projects. One material property we haven’t discussed yet is the ability of a material to either be a magnet, or be attracted to a magnet. Explain when these properties would be desirable or undesirable. Give at lease 2 examples each of applications where these properties would be (A) desirable; and (B) undesirable.
This lesson was a class participation project. We discussed the possible use of 5 different types of materials as potential components in three different PROJECTS. Each team promoted it’s product group to a panel of judges, for each project.
Since we can’t create the same team participation for the make up assignment, the assignment is modified somewhat.
Please write a report of at least one page, explaining why non-ferrous metals (see definition below) are the best material choice to incorporate in the project described below. Choose one or more material in this group to incorporate in the project.
Certain materials are used to imply something apart from function. For example granite might imply wealth, although concrete would be functionally equivalent. Give three (3) other examples.
List all of the materials that are in the chair in which you are now sitting. Why are these materials used. Be specific. Why aren’t other materials, such as wood and cloth used?
Some outdoor markers, such as those found in cemeteries, are expected to last for centuries. Based on you knowledge of materials engineering (Lesson 1), why has bronze, historically, been used for this purpose more often than stainless steel? Give at lease 3 reasons.
Open lesson as PDF file: Engineering materials, Lesson 1 and 2, 9-24-2018.
The types and uses of plastics greatly increased in the early to mid 20th century. How would engineering be different if plastics were not available as a material? Explain your answer.
Many people see scientists and engineers as having distinct job descriptions. Scientists explore, experiment, and discover; engineers create, design, and build. Does this distinction seem clear to you? Or do you see overlap in the functions of scientists and engineers? Explain your answer.
Billionaire tech entrepreneur, Elon Musk (boss at Tesla and SpaceX), called artificial intelligence (AI) more dangerous than nuclear warheads. (1) What does he mean? (2) Explain why you agree or disagree.
Some engineers work in secured areas that are off limit to the public. Explain why you think this is done? Give 2 or 3 examples of situations in which you think this kind of security is necessary. Explain why for each example.