Course Content
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MAIN CONCEPT OF MEASUREMENT SYSTEM
- Introduction, Purpose and Terminology
- Quality of Measurement Data
- The Measurement Process
- Statistical Properties of Measurement Systems
- Standards: Background and Use of Standards
- Purpose of Calibration & Calibration Systems
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TYPES OF MEASUREMENT SYSTEM VARIATION
- Source of Variations
- Bias
- Repeatability
- Reproducibility
- Stability
- Linearity
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COMPUTATION TECHNIQUES ASSOCIATED WITH GR&R
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ANALYSIS OF A MEASUREMENT SYSTEM
- Measurement System Discrimination
- Process Variation – Location
- Process Variation – Width or Spread
- Analysis of Measurement System’s Variability using Work Examples: Bias / Repeatability / Reproducibility / Stability / Linearity
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EFFECTS OF MEASUREMENT SYSTEM VARIABILITY
- Effect on Decisions
- Effect on Product Decisions
- Effect on Process Decisions
- New Product Acceptance
- New Process Acceptance
- Process setup and control
- Effectiveness in establishing QC / QA Systems
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ASSESSING MEASUREMENT SYSTEMS
- Background : Measurement System Overview
- Selecting and Developing Test Procedures
- Preparation for a Measurement System Study
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VARIABLE MEASUREMENT SYSTEM STUDY
- Range Method (Rapid Approximation)
- Average and Range Method (XBar-R)
- Standard GR&R Study
- Analysis of Variance (ANOVA) Method
- Application of ANOVA using Computerised Software (e.g Minitab)
- Interpretation of ANOVA Result & Number of Distinct Categories
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ATTRIBUTE MEASUREMENT SYSTEM STUDY
- Attribute Gage Study (Go/No Go Method)
- Visual Standard: Based on Percentage of Correct Decision
- Visual Standard: Based on “Inter-raters Agreement” In Terms of Cohen’s Kappa Value
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METHOD OF REDUCING UNACCEPTABLE GR&R RESULT
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APPLICATION OF CALIBRATION TECHNIQUES IN MEASUREMENT SYSTEM
- Measurement Error vs Measurement Uncertainty
- Calibration System / Measurement Traceability
- Major Categories of Calibration
- Review and Discuss Certificate of Calibration
- Determination of Calibration Interval
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IMPACT OF GR&R ON PROCESS CAPABILITY STUDIES
- Determination of Calibration Interval
- Computation of Estimated Process Standard Deviation
- Calculation of Process Capability Index
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CLASS_ROOM ASSIGNMENT AND EXERCISES
- Case Study: Impact of GR&R on Process Capability Studies