Six Sigma tools - measurement system
analysis (MSA)
What is six sigma measurement system analysis (MSA)?
- Six sigma measurement system analysis is a six sigma methodology tools. It is a process of measurement to get the characteristics value.
- Why measurement system analytic (MSA) needed for the process?
- Measurement system analytic directly affect on the product and process decisions. MSA is to minimize false alarm (producer’s risk) or miss rate (customer’s risk).
- False alarm: A potential wrong decision (reject, scrap, pass, deliver) will be made based on a low quality measurement system output.
- Miss rate: A bad part sometimes be called as “good”
- What is the benefit on using measurement data?
- Process development: To determine if a significant relationship exists between two or more variables.
- Process control: The decision to adjust a manufacturing process or not is now commonly based on measurement data. Measurement data, or some statistic calculated from them, are compared with statistical control limits for the process.
- The benefit of using the measurement data is largely determined by the quality of the measurement data used.
Standard flow chart for advance product quality plan (APQP)
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