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 da
