ISE507 Lecture 5

ISE507 Lecture 5 - SixSigmaLecture5...

Info iconThis preview shows pages 1–11. Sign up to view the full content.

View Full Document Right Arrow Icon
Six Sigma Lecture 5 DMAIC Measure Phase, Continued
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
‘To measure is to know’ Lord Kelvin ‘If you cannot measure it,     you cannot improve it’ Lord Kelvin The purple Aura of Lord Kelvin…
Background image of page 2
What is MSA? A method for  Quantifying the contribution of the  variation within the measurement  process to overall process variability Evaluating the factors that affect the  quality of measurements
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Some Terms Related to MSA Measurement: ‘to assign numbers to  material things to represent the relations  among them with respect to particular  properties’ Gauge (Metrology Tool): device used to  obtain measurements Measurement System: collection of  procedures, gauges and other equipment,  software, materials, facilities and personnel  used to perform a measurement
Background image of page 4
Measurement System Analysis: When? Define: What is Important? Measure: How are we doing? Analyze: What is wrong? Improve: What needs To be done? Control: How do we Guarantee performance? MSA: Assess measurement systems before collecting data
Background image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Measurement System Analysis: Why? σ 2total     =         σ 2process  +       σ 2measurement
Background image of page 6
Impact of poor Measurement system on  process capability Why, continued…
Background image of page 7

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Measurement System Attributes:  How is a MS characterized? Precision Bias (Accuracy) Linearity Discrimination (Resolution) Stability
Background image of page 8
Precision The standard deviation of the measurement  system distribution How big is the measurement system variability?
Background image of page 9

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Bias (Accuracy) The difference between the observed value  and the reference value How close are the measurements to my process  standards?
Background image of page 10
Image of page 11
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 03/22/2012 for the course ISE 507 taught by Professor Dessouky during the Fall '10 term at USC.

Page1 / 65

ISE507 Lecture 5 - SixSigmaLecture5...

This preview shows document pages 1 - 11. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online