DOE sample on plastic injection moulding process needed

[p_tww]

Hi, Everybody

Could you please show me the sample of DOE on plastic injection process? include Matrix selection & testing result analysis?

thanks

 

[D.Scott]

Hi, Everybody

Could you please show me the sample of DOE on plastic injection process? include Matrix selection & testing result analysis?

thanks

Sorry but I don't think it is quite that simple. You will need to do some design work up front for your DOE. How many factors will you include? How many levels? Full factorial? Taguchi method?

There are a lot of good basic DOE software programs that will help you through your design and print out a matrix, I don't know if they still offer it but I have used a program called DOE KISS by Digital Computations Inc. If I remember right, it was under $100. I found it user friendly for our purposes but we never did anything but basic 3 level experiments.

There is a great book by Donald J. Wheeler titled "Understanding Industrial Experimentation" published by SPC Press, Inc. in Knoxville, Tennessee. We used it in our classes at the college and found it helpful and easy to understand.

Dave

 

[gszekely]

First of all this is just my opinion, and sorry for my English.
I agree with Scott, that just looking at a DOE sample and running a DOE is not just that simple, or at least not if you want to obtain good results and not black magic.
Some question:
What is your problem ?
How much statistical knowledge ?
How much plastic injection manufacturing knowledge ?
I have seen several times when somebody was forcing a DOE, without processing knowledge, and also others running a DOE without any statistical knowledge. The third situation is when you put together a good DOE, but you miss to explain, give adequate information and supervision to those who will run the experiment, and will fail due to a small think not clear for all.
I these situations you may draw wrong conclusion. On the other hand running a DOE is very expensive and time consumung for shop floor.
You can find some examples, running a Google search, and here are a few, after I have run a search:
http://www.geocities.com/dfloyd2292/pap2.html
http://www.statease.com/pubs/doe-keys.pdf
http://www.public.iastate.edu/~vardeman/stat531/handnotes/doddstory.pdf
Good luck.
György

 

[Ernst Kong]

I agree with gszekely.

Without a thorough understanding of the subject, DOE may backfire.

 

[Bill Ryan - 2007]

Without a thorough understanding of the subject, DOE may backfire.

And be a tremendous waste of money/resources.

 

[harry]

Have a look at the attached paper on DOE for injection molding.