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23rd July 2012, 10:39 PM
#1
Nautilus 2010
Gentlemen, I am trying to familarize myself with the DOE aspect of Nautilus and was wondering what your thoughts were on a coulpe of things.
1.On the Define Variables page , what's being looked for in the Precision box? I'm not sure if I should put the # of decimal places desired or the increments of change from one experiment to another.
2. On the Qualitative box , it's asking for Least desirable and Most desirable. Is this for a rating (1-10 where 1 is least and 10 is most) or something else?
We are a TPE manufacturer and I want to be able to use the program with our customers, so any suggestions you can give would be greatly appreciated.
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24th July 2012, 12:55 AM
#2
Re: Nautilus 2010
Hi,
Precision - This is the minimum amount of change in the parameter that you think will make a change in the quality of the part. For example, what is the minimum change in the amount of holding pressure you think will make a difference in the part? Will changing 1 psi make a change? In theory yes, but in practicality at least a 50 psi change is required to see a noticeable difference. So the precision value is 50. For cooling time I use 1 second, mold and melt temps I use 5 deg F. This number will also show up as increment steps after you do the analysis and look at the prediction equation tabs - both numeric and visual.
Qualitative - What is the most desirable? = Zero Splay - Least desirable = 5 (or any other number you prefer).
Let me know if this helps.
Thanks,
Suhas
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