Exam 9: Testing and Evaluating

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____________________,or "human factors engineering," has to do with designing products and environments that work well with people.

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Ergonomics

How can you use numbers to present test results?

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Test results most often take the form of numbers,such as the number of minutes a child plays with a toy,the amount of force a component or product can withstand without crushing or other failure,or the percentage of people rating the product "very good" and "excellent." Presenting this information in a narrative or description can sometimes be tedious.Graphic presentation through charts,graphs,diagrams,and tables is an effective technique.Be certain that figures are well labeled and clear for the reader.

One well-known product testing organization is ____ Laboratories (UL).

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____ refers to whether the product does what it is supposed to do.

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If you keep stretching a material it will eventually get to a point where it will no longer return to its original shape when the tension is released.This stage is called the ____ limit.

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The modulus of elasticity is also called ____ modulus.

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Hardness is indicated by a letter: R,L,M,E,and K.

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____________________ cost is the total cost of a product that includes the amount spent on energy to run it.

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Have you ever taken a small piece of plastic or metal and bent it back and forth until it broke? If you have,you have performed a(n)____ test.

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____ refers to the pleasurable response you get to an object or experience.

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The maximum force a material can withstand is called its ____________________ strength.

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Engineering testing is only performed on the product or system as a whole once its components are assembled.

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How can you find the hardness of a material?

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There can be many important attributes in your design work and impacts is one of them.What are impacts?

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Describe Hooke's Law.

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When a material stretches (strains)proportionally to the amount of force (stress),that material conforms to Hooke's law.

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Compare two refrigerators: Refrigerator A costs $500;Refrigerator B costs $650.A uses $0.70 per day ($255.50 per year)and B uses $0.45 of electricity per day ($165.25 per year);both have a life expectancy of 10 years.Which has the lower life-cycle cost?

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Test results most often take the form of descriptions.

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The failure point is also known as the ____ point.

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The criteria of good design are ____.

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