Transcript Environmentally Conscious Design & Manufacturing ME592E-1

Homework #9
1. A reclamation center produces two products, A and
B. The sales volume for produce A is at least 60 %
of the total sales of the two products. Both products
use the same raw material, of which the daily
availability is limited to 100 lb. Products A and B
use this raw material at the rates of 2 lb/unit and 4
lb/unit, respectively. The sales price for the two
products are $20 and $40 per unit. Formulate the
problem as a linear programming problem.
Environmentally Conscious Design & Manufacturing (ME592)
Date: May 10, 2000
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Homework #9
2. For the data given in the last problem of midterm
exam, reproduced in slide # 14 of class 26, does the
actual observation lie within:
i) 68 % probability interval on the observation?
ii) 90 % probability interval on the observation?
iii) 99 % probability interval on the observation?
3. Use slide 24 of class 8 (3/22/00) to write down a model
for the feedback loop of X2t as the output and X4t as
the input.
Environmentally Conscious Design & Manufacturing (ME592)
Date: May 10, 2000
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Environmentally Conscious Design & Manufacturing (ME592)
Date: May 10, 2000
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Homework #9
4. For the auto-focus unit reliability example of class 27,
determine the component MTTF if the number of
components is reduced to 5. What will the component
reliability be after 2000 hours of operation?
(Answer: MTTFc:194,957 h; Rc=0.98979)
Environmentally Conscious Design & Manufacturing (ME592)
Date: May 10, 2000
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