DMADV
How to Implement DFSS
- The most common method is DMADV
- DEFINE
- MEASURE
- ANALYZE
- DESIGN
- VERIFY
Define
- Practically the same as DMAIC with slight changes in tools emphasized
- Project goals remain customer-focused
- Like DMAIC, DMADV includes a project charter and project plan
Measure
This is where things differ from DMAIC
- In DMAIC, Measure involves gathering information from an existing process.
- Since DFSS involves creating a new process or product, there is no process to pull existing data besides benchmarking competition.
- Measure is best defined in terms of customer needs and wants, then translating them into measurable design requirements.
- Kano Model is great tool to measure and rank customers needs (must-have) and wants (exciter) features
Measure factures same as DMAIC
Both DMAIC and DMADV emphasize the importance to survey and interview customers and to plug survey results into a CTQ matrix.
Also like DMAIC, DFSS focuses on Critical to Quality (CTQ) metrics, which includes tools like House of Quality.
Analyze
DMADV utilizes tools like Quality Function Deployment (QFD) during the ANALYZE Phase whereas QFD is often employed in the DEFINE phase of DMAIC.
Analyze phase, the team draws up various concepts that are tailored to customer requirements.
-Comparison tools such as benchmarking measure how well the concept meets customer requirements. The final design is chosen by the end of the phase.
Design
This is where 3D modeling or preliminary drawings occur. Once complete, the design is evaluated against tools such as FMEA and Design of Experiment (DOE) to insure all CTQ metrics are met. Other design tools include:
- QFD Matrix
- FMEA Failure Mode Effects Analysis
- TRIZ
- Brainstorming
- Pugh
- Taguchi Robust Design
- DFX – Design for X
Design
This is where 3D modeling or preliminary drawings occur. Once complete, the design is evaluated against tools such as FMEA and Design of Experiment (DOE) to insure all CTQ metrics are met. Other design tools include:
- QFD Matrix
- FMEA Failure Mode Effects Analysis
- TRIZ
- Brainstorming
- Pugh
- Taguchi Robust Design
- DFX – Design for X
Verify
This is where validation testing of the design occurs. Pilot runs are employed to validate design success. After the product or process is validated, a plan for full implementation, allowing metrics to continue to monitor gains. Detailed process maps, work instructions, flow charts, and checklists are created to ensure a fool-proof transition to the operations team.
Finally, the DFSS Team is closed and team members take on new projects.
