Transcript EME6403 - Quality Control

EME6403 - Quality Control
Dr. L.Anneberg, Ph.D
Fall 2001
Office: E215
Phone: 248-204-2539
Introductions
Email is great: [email protected]
 Course online comment form:
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 www3.ltu.edu/~anneberg/qc.html
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Course homepages:
 www3.ltu.edu/~anneberg
 www4.ltu.edu
 login:
XX33333
password: 33333 [student ID]
 www.blackboard.com/courses/EME6403/
 Enter
as ‘guest’
First Homework
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Part 1
Find an interesting item on www.asc.org about QUALITY, mildly edit
it down to 100 words or less
 Copy and paste, count words [must be less than 100]
 Electronically communicate to me:
email to me [TEXT ONLY, no attachments!!]
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Part 2:
make a comment on
www3.ltu.edu/~anneberg/qc.html
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don’t be anonymous, so I know who you are!!
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American Society for Quality
and Quality in Manufacturing
Wonderful resources for info, especially
when the class is over
 ASQ has certification programs: Quality
Engineer, Reliability Engineer, etc.
 www.asq.org AND
www.qualityinmfg.com
 Juran and Deming are among the VIPs of
the quality genre
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More Introductions
I have an online questionnaire that you must
fill out… [homework #1]
 www3.ltu.edu/~anneberg/qc.html
 I want to get a good email list going, and
also know what topics you’d like to see
 EXTRA CREDIT opportunities:
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 find
my dissertation/title/year: email me 1 line
 find a marathon time of min: email me 1 line
SQC = Statistical Quality Control
Montgomery, our course book author, also
has a SQC book [I use this as a reference he also has a Statistics, Probability, and
Prob/Stat book, among others]
 Quality Improvement leads to increased
productivity
 80/20 rule - Pareto handout
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Seven major tools of SQC
Histogram
 Check Sheet
 Pareto chart
 Cause and Effect fiagram
 Defect Concentration diagram
 Scatter diagram
 control chart
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Control charts help reduce
variability
Idea: you calculate a middle line [average],
and upper/lower lines, based on historical
data
 Then you let the process proceed
 if you get points outside the UCL/LCL,
worry [or maybe 3 points in a row].
 Main types are X bar and R -avg/range
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X bar chart
The center line is X double bar, the average
of the averages…
 in other words, X bar is the average for one
day. X double bar is the average of these
averages
 R is the Range, R bar is the average of these
 The UCL/LCL are +/- [R bar][A2]
 A2 is from your chart
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Homework for SQC
Do a control chart. checksheet,pareto
diagram,histogram for your book problem
2.5
 For extra credit: do a control chart for
something in your life/job
 2.5 doesn’t have a bunch of days to do
averages on, but have X bar be X double
bar, and R bar be R…..
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Homework summation
Questionnaire:
www3.ltu.edu/~anneberg/qc.html AND
COMPLETE!!
 Go to
www.blackboard.com/courses/EME6403
and add some item from ASQ or
Qualityinnmfg.com to the discussion
 Small data analysis…..
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