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rules related to DFSS vs. DMAIC

Six Sigma – iSixSigma Forums Old Forums General rules related to DFSS vs. DMAIC

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  • #36534

    CurCT
    Participant

    Two questions:
    1.  When is DFSS better than DMAIC?  Some specifics if possible
     
    2. What are some “expert” opinions on transactional quality.  Best practices if possible
     
    Thanks for any help!

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    #105649

    KBailey
    Participant

    You’re not a BB, are you? Working on a paper for some class?
    Use DFSS when:

    You’ve done DMAIC and are unable to meet required quality level
    You’re designing a new process, product, or service
    You’re investing significant capital
    What are you looking for in expert opinions on transactional quality? Transactional quality is important but it usually doesn’t get the attention it should. Even in manufacturing processes, most COPQ can be traced back to transactional quality: hiring, training, identifying customer requirements, planning, purchasing, writing SOPs, process analysis (a transactional process in itself) etc.
    How can best practices be defined for something as broad as “transactional quality?” That’s like asking what’s the best play to call in sports. Best practice is to treat it as you would any other process – define, measure, etc.

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    #105650

    Vinny Sastri
    Member

    DMAIC is used to improve existing products, processes and services.  DFSS is used to design and develop new products, processes and services.  If the improvements from DMAIC still do not get you to your goal, then DFSS can be used to re-design your product, process or service.

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    #105657

    Mikel
    Member

    Three answers:
    1.  When is DFSS better than DMAIC?  Specifically DFSS is better when designing something. The advice of using DFSS when DMAIC doesn’t give you what you what you want is stupid – all decisions on where to apply resources on design are driven by strategy, not the inability of a DMAIC project.
    2. What are some “expert” opinions on transactional quality?  Transactional quality usually stinks.
    Best practices? Map it, measure it, improve it following the data.
    It ain’t a whole lot more difficult that that!

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    #105709

    Charmed SIX
    Participant

    Just want to know:What do you mean by “transactional”quality?Why it stinks?thank you for feedback,regards.

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    #105714

    Charmed SIX
    Participant

    Another question:Is  ISO  equal to “transactional” quality?What we should call the  SS DMAIC  then ?What type of  Quality???j  T;

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    #105717

    Charmed SIX
    Participant

    Transformational  quality is the contrast to transactional quality,please  can you define  both and indicate how to utilize each for the benefit of the organization.thanks and regards.

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    #105719

    KBailey
    Participant

    I’m not sure what you’re reading.
    Transactional quality is simply the quality of transactional processes. Transactional processes are – according to one common definition – any business processes other than manufacturing processes. I don’t use the term “tranformational” to refer to manufacturing processes, because many transactional processes also transform information or money or people or something in some way.
    When we say things like, “transactional quality usually stinks” what we mean is that the efficiency and effectiveness of transactional processes is usually very poor. Figure it out. What do you think the defect rate is in HR’s hiring process? What about a typical sales process? Invoicing, in a business that does manual invoice entry? A common mindset in office environments is, “If you get it right 95% of the time, that’s pretty good!” If you get 95% FPY on customer selection, 95% on Purchase Order # entry, 95% on parts/service selection, and 95% on pricing, you’ve got almost 20% of your invoice defective.
    In contrast, you wouldn’t tolerate that kind of poor quality in the bank processessing your checks and credit card transactions, or in your employer paying you correctly. As a business operator, you wouldn’t be very happy with a vendor that messed up your billing 15-20% of the time.

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    #105723

    Charmed SIX
    Participant

    Thank You for your excellent elaboration.kind regards.

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