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What are the differences between DMADV and DMAIC in Six Sigma methodology?
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2 Answers
Mark: Wow! This question has been sitting here for quite a while. Here are the short answers:
DAMIC (Define-Measure-Analyze-Improve-Control) are the five steps in six sigma product or process improvement for existing products or processes.
DMADV (Define-Measure-Analyze-Design-Verify) are the five steps in six sigma product or process development for a new product or process.
Ooops.. that answer was probably a bit too short. I'll finish it up.
The first three steps of both processes are the same:
1. Define: who is the customer, what are their requirements, what are the project boundaries, and what is the process or product that needs improvement or development?
2. Measure: Develop that data collection plan for the product or process; collect data from various sources to determine the current functionality (current state), collect information from the customer to determine the issues that need to be addressed to better meet the need (future state).
3. Analyze: Identify gaps between current and future states (current functionality/use vs. optimal functionality/use), prioritize the opportunities for improvement/innovation, identify the reason(s) for the problems - why isn't the current product or process delivering what the customer wants - or what must the new product or process do to meet the need/demand?
The last two steps differ, because either you are improving an existing product or process (DMAIC) or developing a new product or process (DMADV).
IN DAMAIC:
4. Improve: Create the innovative solutions to fix the identified problem(s). Deploy the solution.
5. Control: Measure how well the solution/improvement works to eliminate the problems identified in the Analyze step. Ensure thing do not revert to the old ways (sustainability). Tweek the solution/improvement as necessary to optimize performance. Institutionalize the improved product or process.
IN DMADV:
4. Design: Design the new product or process to meet the needs identified in the previous step. Put the new solution or product into production/use.
5. Verify: Gather data to measure how well does the new product or process meets the identified need. Adjust the product/process as necessary for optimal performance. Put into permanent production/use.
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