Engineering
Materials Science Engineering
You have recently been hired by the BRC Company as

You have recently been hired by the BRC Company as the quality engineer. Your new boss, Abigail

Question:

You have recently been hired by the BRC Company as the quality engineer. Your new boss, Abigail Crawford, brought in one of the leading textbooks in manufacturing engineering (NOT DeGarmo) to show you this problem. After reading the discussion and studying the figure, Abigail asked you the following questions.
1. What kind of control chart is this?
2. What do you estimate the standard deviation (Ïƒ€²) of the parent population to be, assuming that the control limits on this chart are based on three sigma.
3. The dashed line in the figure labeled "mean" is not the mean or the average-the mean is and is equal to 0.00017. What is the line really called?
4. From the information given in the discussion and in the figure, determine the values of Cp and Cpk.
5. What is the most glaring error in the figure and why is it so wrong?

Transcribed Image Text:

36 in 5.5125 5,5115 UCL Specified lmits Represents 4 measurernents Tool was reset -6 1 3 5 7911 131517 Sample number 2 4 6 8 10 12 14 16 FIGURE CS-12

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1 This is an Xbar chart showing the average values of the 19 samples of 4 parts 2 With control ...View the full answer

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Related Book For book-img-for-question

Materials and process in manufacturing

ISBN: 978-0471656531

9th edition

Authors: E. Paul DeGarmo, J T. Black, Ronald A. Kohser

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Question Posted: May 24, 2016 04:05 AM

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