A component part of an aircraft turbine is manufactured by a casting process. The part has a critical measurable quality characteristic that must be statistically controlled by means of a control chart. For this purpose a sampling process was carried out obtaining the following coded data: (image) a) Construct the X and S control charts for this process. Is the process under statistical control? If necessary revise the test control limits. b) Perform a complete analysis of the current process capability, if the product specifications are 33 ± 6. Interpret your results. c) How much would the process variation have to be reduced to have a six sigma level process?
A component part of an aircraft turbine is manufactured by a casting process. The part has a critical measurable quality characteristic that must be statistically controlled by means of a control chart. For this purpose a sampling process was carried out obtaining the following coded data: (image) a) Construct the X and S control charts for this process. Is the process under statistical control? If necessary revise the test control limits. b) Perform a complete analysis of the current process capability, if the product specifications are 33 ± 6. Interpret your results. c) How much would the process variation have to be reduced to have a six sigma level process?
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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Question
A component part of an aircraft turbine is manufactured by a casting process. The part
has a critical measurable quality characteristic that must be statistically controlled by
means of a control chart. For this purpose a sampling process was carried out obtaining the following
coded data:
(image)
a) Construct the X and S control charts for this process.
Is the process under statistical control? If necessary revise the test control limits.
b) Perform a complete analysis of the current process capability, if the product specifications are 33 ± 6. Interpret your results.
c) How much would the process variation have to be reduced to have a six sigma level process?
Transcribed Image Text:Muestra
X1
X2
X3
X4
1
33
29
31
32
2
33
31
35
37
35
37
33
34
4
30
31
33
34
33
34
35
33
38
37
39
40
7
30
31
32
34
29
39
38
39
9
28
33
35
36
10
38
33
32
35
11
28
30
28
32
12
31
35
35
35
13
27
32
34
35
14
33
33
35
37
15
35
37
32
35
N3
LO CO
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