Designing Capable and Reliable Products Episode 8 pps
Designing Capable and Reliable Products Episode 8 pps
... 5.2 52 80 2 0 .80 14 6.1420 0. 480 2
495 3.5 35 83 7 0 .83 64 6.2046 0.5935
525 2.9 29 86 6 0 .86 54 6.2634 0.6959
555 2.7 27 89 3 0 .89 23 6.3190 0 .80 13
585 2.2 22 915 0.9143 6.3716 0 .89 89
615 1 .8 18 933 0.9323 ... ÿ1.0325
285 7.9 79 379 0.3 785 5.6525 ÿ0.7431
315 9.5 95 474 0.4735 5.7526 ÿ0.4439
345 8. 3 83 557 0.5565 5 .84 35 ÿ0.2070
375 7.6 76 633 0.6324 5.9270 0.00 08
405...
Designing Capable and Reliable Products Episode 12 ppsx
... index C
pk
3 :88
Process capability index C
p
4: 48
Manufacturing variability risk q
m
1:1
Appendix V 335
Component name Lamp holder bracket Calculation of q
m
Drawing number FQ2 186 m
p
1 Â ... index C
pk
2: 18
Process capability index C
p
2:67
Manufacturing variability risk q
m
1:3
334 Appendix V
Component name Plunger housing Calculation of q
m
Drawing number CH 187 8-1021...
Designing Capable and Reliable Products Episode 6 pps
... 0.62264 0.31
555.2 5 38 0.716 98 0. 58
569.0 5 43 0 .81 132 0 .88
582 .8 5 48 0.99566 1.32
596.6 3 51 0.96226 1. 78
610.4 0 51
624.2 0 51
6 38. 0 1 52 0. 981 13 2. 08
146 Designing reliable products
limits are ... y-axis) ( y-axis)
431.0 1 1 0.0 188 7 ÿ2. 08
444 .8 0 1
4 58. 6 2 3 0.05660 ÿ1.59
472.4 3 6 0.11321 ÿ1.21
486 .2 2 8 0.15094 ÿ1.03
500.0 3 11 0.20755 ÿ0 .82
513...
Designing Capable and Reliable Products Episode 1 Part 3 pps
... the
potential risks of failure and their consequences, both from normal use and fore-
seeable misuse, is a key element in designing capable and reliable products (Wright,
1 989 ).
1.5 Designing for quality
The ... machine/process by virtue of its design, construction and the nature of its
38 Designing capable components and assemblies
2
Designing capable
componen...
Designing Capable and Reliable Products Episode 1 Part 7 pps
... 37.70
3 1 1 0. 085 1.7 0.020 4.34 4.19
4 1.2 1.7 0.300 1.7 0.072 54.07 54. 28
5 1 1 0.004 1.7 0.001 0.01 0.01
6 1 1 0. 080 1.7 0.019 3 .85 3. 78
Assembly tolerance, t
a
Æ0:4 08 mm
Assembly standard deviation, ... substituting equations 3.11 and 3. 18
into equation 3.2. This equation is similar to that derived in Harry and Stewart
(1 988 ), but using the q
m
estimates for C
pk
and a...
Designing Capable and Reliable Products Episode 1 Part 8 doc
... of the literature discussing
tolerance stack models (Chase and Parkinson, 1991; Harry and Stewart, 1 988 ; Wu
et al., 1 988 ). Shifting and drifting of component distributions has been said to be
the ... designer and manufacturer over product safety in order to avoid user injury or
Figure 4.1
The `true' margin of safety (adapted from Furman, 1 981 and Nixon, 19 58)
134 Design...
Designing Capable and Reliable Products Episode 1 Part 9 pps
... 38 0.716 98 0. 58
569.0 5 43 0 .81 132 0 .88
582 .8 5 48 0.99566 1.32
596.6 3 51 0.96226 1. 78
610.4 0 51
624.2 0 51
6 38. 0 1 52 0. 981 13 2. 08
146 Designing reliable products
analysis (Haugen, 1 980 ) and ... y-axis) ( y-axis)
431.0 1 1 0.0 188 7 ÿ2. 08
444 .8 0 1
4 58. 6 2 3 0.05660 ÿ1.59
472.4 3 6 0.11321 ÿ1.21
486 .2 2 8 0.15094 ÿ1.03
500.0 3 11 0.20755 ÿ0 .82
513...
Designing Capable and Reliable Products Episode 1 Part 10 pps
... application in sequence is independent and belongs to the
same load distribution and it is assumed that the material suers no strength
1 78 Designing reliable products
deterioration. In fact, the ... case when both loading stress and material strength
are a Normal distribution
180 Designing reliable products
Advantages:
. Addresses variability of loading stress and mate...
Designing Capable and Reliable Products Episode 2 Part 1 ppsx
... using different approaches for LR 0 :89
(rough loading) and SM 3:35
190 Designing reliable products
p % 0:0009 from Figure 4.31. Using equation 4. 48, and given that n 1000, gives the
reliability ... xo
L
L
and the strength is represented by a Normal distribution, the PDF being as follows:
f S
1
S
2
p
exp
ÿ
x ÿ
S
2
2
2
S
188 Designing reliab...
Designing Capable and Reliable Products Episode 2 Part 6 ppsx
... Â49:95 ÿ49: 98
2
4 Â49:96 ÿ49: 98
2
7 Â49:97 ÿ49: 98
2
10 Â49: 98 ÿ49: 98
2
8 Â49:99 ÿ 49: 98
2
6 Â50 ÿ49: 98
2
2 Â50:01 ÿ49: 98
2
1 Â50:02 ÿ49: 98
2
40
v
u
u
u
u
u
t
0:0162 ... 10 on the x-axis from, say, 380 to 540. The Normal
frequency equation is given below, and Figure 6 shows the histogram and the Normal
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2...