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HW7solf10 - Design a system that can collect and store up...

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Homework #7 Solutions 1. There are several differences: Design is based on iteration of ideas until you get something that works, while research is done by planning a specific experiment to answer a question. Design is often done without understanding why something works, while the goal of research is to find out why something works. Design needs to consider non-technical issues, like cost or societal impact. Research often doesn’t (although it can). 2. A problem statement needs to specify in as much detail as possible the customer needs, without constraining the design. It should describe the functionality required, but not the solution. For materials engineering, one of the key issues is that the type of material is not specified in the problem statement. So an example of an appropriate problem statement might be:
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Unformatted text preview: Design a system that can collect and store up to 500 gallons of water from rain, can be installed by a skilled laborer in one day on the roof of a residence, will last for a minimum of 10 years before needing replacement, and costs less than $1000. The system should include the ability to purify the water so it is potable and connect to the existing water system of the residence. 3. Simply basing a design cost on the cost per pound of the material does not account for the numerous other factors that go into determining cost: The actual cost of the materials being used, based on the total amount of material needed. The cost of tooling and equipment needed to fabricate the product. Overhead cost, which includes labor, space (e.g. rent), energy consumption, and research and development costs....
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