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ISQS 3344 Fall 2010 HW 2
1. Suppose that the specifications for a part (in inches) are 6.00 ± 0.25, and that
the Taguchi Loss Function is estimated to be L(x) = 8,500(xT)2. Determine the
estimated loss if the quality characteristic under study takes on a value of 6.50
inches. Is the loss greater at 6.50 as opposed to 6.25?
p.199,200
L(x) $
2,100 yes
k
8400
531.25 at .25
xT
0.5
2. Given the diagram below, determine the system reliability if the
individual component reliabilities are: A = (x), B = 0.93, C = 0.92, and D = 0.94.
Chapter 17
A
x
B
0.93
C
0.92
D
0.94
RaRb
0.93
1((1I15)*(10.93)
RcRd
1
1((10.92)*(10.94)
RabRcd
0.93
B23*b24
3. What is the reliability of this system? If you could add one process (must be one of the
existing processes) to best improve reliabilty what would be the improved reliability?
A
B
C
D
0.99
0.97
0.91
0.99
Reliability
0.86
Chapter 17
0.993*0.965*0.912*0.988
A
B
C
D
0.99
0.97
0.91
0.99
C
Parallel Reliability
0.99
0.91
1_(0.912)*(10.912)
System Reliability
0.94
Calculate
d
D
B
A
C
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View Full Document0.993*0.965*0.99256*0.988
Calculated
Chapter 16 4. Anna works on an assembly line where it takes her 20 minutes to
of a product needed to fill a container. It takes her an additional 5 minutes to transport the
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 Spring '08
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