Six Sigma – iSixSigma Forums Old Forums General DMAIC Versus DMADV

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    I am a student who’s researching on DMAIC Versus DMADV.


    John J. McDonough

    I’m not so sure there is a “versus”.
    DMAIC is an improvement methodology.  DFSS (DMADV, DMEDI or whatever your flavor) is a build from scratch methodology.
    Typically, you use DFSS when you are launching a new process or new product.  You also use it when you get to the point in a DMAIC project (usually around the end of Measure) where you have concluded that the current process is so badly broken than you can’t get where you need to be by improving it, and you need to drag out a clean sheet of paper.
    A lot of the tools are the same, and the philosophy is the same.  The steps are somewhat different, though, because DFSS is typically a lot larger project, and you want to spend a lot more effort understanding what will make the customer happy, and understanding the market landscape.  Ultimately, at the end of Measure in DFSS, you know how good you need to be.  This is no different than DMAIC, except that instead of thinking in terms of how much you need to improve the current process, you are thinking in terms of what the market requires.
    There is a lot on this site about both methodologies, but you won’t see a lot of comparisons because it’s a little like comparing apples to Oldsmobiles  (on the day the last Oldsmobile rolled off the assembly line in Lansing!)



    Wow, just searching the site you could have found an answer:
    Good luck.

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