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  MSA on tensile strength equipment

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Author Topic:   MSA on tensile strength equipment
TL
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Registered: Nov 1999

posted 29 November 1999 05:16 AM     Click Here to See the Profile for TL   Click Here to Email TL     Edit/Delete Message   Reply w/Quote
Hi everybody!

I'm responsible for introducing MSA (acc. to QS9) into our company. When it comes to gages the measure dimension and so on there are no problems BUT when it comes to for example tensile strength equipment (destructive test): how should the studie be conducted? I have seen the sheet from Delphi but that does not make sense.

/Tobias

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pdboilermaker
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Posts: 59
From:Russiaville, Indiana, USA
Registered: Apr 99

posted 29 November 1999 09:30 PM     Click Here to See the Profile for pdboilermaker   Click Here to Email pdboilermaker     Edit/Delete Message   Reply w/Quote
I think that that correct to perform this type of study can be found in the MSA manual. It is back in the appendix (c? g?) and tells how to do this. My basic understanding is that you essentially make a run chart for each of the tests that you perform. Anyway, I dont do calibrations, I have just read the extremely dry and boring MSA rag a few times. You better double check

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TL
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posted 30 November 1999 02:18 AM     Click Here to See the Profile for TL   Click Here to Email TL     Edit/Delete Message   Reply w/Quote
Hello!

No, I don't thinkt this procedure is described in the MSA manual. I have read this a couple of times as well.

/Tobias

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Don Winton
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From:Tullahoma, TN
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posted 30 November 1999 12:33 PM     Click Here to See the Profile for Don Winton   Click Here to Email Don Winton     Edit/Delete Message   Reply w/Quote
Try This:

https://elsmar.com/ubb/Forum4/HTML/000058.html

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TL
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posted 30 November 1999 01:31 PM     Click Here to See the Profile for TL   Click Here to Email TL     Edit/Delete Message   Reply w/Quote
Hi Don!

I have read most of the topics of Calibration and MSA but no one have had a good answer to this question. I think that is somewhat strange because a lot of companies must have faced this problem.
Have you any suggestions where the answer can be found?

/Tobias

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Don Winton
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From:Tullahoma, TN
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posted 01 December 1999 08:34 AM     Click Here to See the Profile for Don Winton   Click Here to Email Don Winton     Edit/Delete Message   Reply w/Quote
I have read most of the topics of Calibration and MSA but no one have had a good answer to this question.

I guess that would depend upon your definition of good. I assume then that the paper on R&R for attribute data did not help, nor the paper on process capability for attribute data.

Have you any suggestions where the answer can be found?

I guess MSA is in the eye of the beholder. Suggestions:


  • A run or control chart on the variable data rather than the attribute data.
  • A control chart on the attribute data.
  • Process capability on the variable data.
  • Process capability on the attribute data.

Just because the AIAG publishes a book on MSA does not mean it is all-inclusive.

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Marc Smith
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From:West Chester, OH, USA
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posted 01 December 1999 08:39 AM     Click Here to See the Profile for Marc Smith   Click Here to Email Marc Smith     Edit/Delete Message   Reply w/Quote
quote:
Just because the AIAG publishes a book on MSA does not mean it is all-inclusive.
To say the least. It's a very basic primer.

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Roger Eastin
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From:Greenville, SC
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posted 01 December 1999 09:23 AM     Click Here to See the Profile for Roger Eastin   Click Here to Email Roger Eastin     Edit/Delete Message   Reply w/Quote
In the bibliography of the MSA manual, it lists a paper by Donald Wheeler (a good SPC/MSA/DOE expert) on MSAs done on Destructive Testing equipment. I would call AIAG and see how you can obtain a copy. Also, check the ASQ press catalog and look for a SPC book that has something on MSAs. I would also recommend Wheeler's book on SPC. Anyway, there are some other resources other than the MSA manual (as has been mentioned). The good news is that you are not the first one that has tried to do an MSA on destructive testing equipment!

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TL
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posted 02 December 1999 03:02 AM     Click Here to See the Profile for TL   Click Here to Email TL     Edit/Delete Message   Reply w/Quote
Thanx Roger!

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