Re: As a part of validation, should i include the acceptance criteria of CPk index >1
So where do you guys learn the finer points of spc/gage RR and cpk? I need reference materials to show people who attend a 2 hour class and suddenly think they are "experts."
1. Experience - we have used these methods for years, figured how they are valuable and not valuable. we don't treat them like some cookbook approach
2. Thinking - we THINK about what is actually happening vs what the 'theory' is
3. Reading - we research this stuff because we do 1&2 and realize we don't understand yet. then we repeat 1 and 2.
Its hard to find the good stuff for all of the **** out there. 90% of what we find through the web is just the same pabulum surface silly stuff over and over again. But we've been able to understand and synthesize what we have researched and what we've experienced.
a short list of GOOD references for these topics is below.
hope this helps.
REFERENCES
SPC
Anything by Donald Wheeler (his articles in Quality Digest, Quality and on his web site are free and his references and experience go back to the origins of these things; he skips those people who have misinterpreted the original intent of SPC)
Wise, Stephen A.; Fair, Douglas, C., Innovative Control Charting, ASQ Quality Press, 1998
MSA (guage R&R)
Donald J Wheeler, Craig Award Paper, “Problems With Gauge R&R Studies”, 46th Annual Quality Congress, May 1992, Nashville TN, pp. 179-185.
Youden, William John, “Graphical Diagnosis of Interlaboratory Test Results”, Industrial Quality Control, May 1959, Vol. 15, No. 11
Donald S. Ermer and Robin Yang E-Hok, “Reliable data is an Important Commodity”, The Standard, ASQ Measurement Society Newsletter, Winter 1997, pp. 15-30.
Donald J Wheeler, “
An Honest Gauge R&R Study”, Manuscript 189, January 2009.
http://www.spcpress.com/pdf/DJW189.pdf
Cpk/Ppk
Sullivan L. P., “Reducing Variability – A New Approach to Quality”, Quality Progress, July 1984
Gunter, Bert, “The Use and Abuse of Cpk, Parts 1, 2,3 and 4”, Quality Progress, January 1989, March, 1989, May 1989, July 1989
Pignatiello, Joseph J., Ramberg, John S., “Process Capability Indices: Just Say “No!””, ASQC Quality congress Transactions – Boston, 1993
Kane, Victor E., “Process Capability Indices”, Journal of Quality Technology, Vol. 18, No. 1, January 1986