MEASUREMENT SYSTEM ASSESSMENT

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

Source of Variations

Bias

Repeatability

Reproducibility

Stability

Linearity

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

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

Selecting and Developing Test Procedures

Preparation for a Measurement System Study

Guidelines for Determining Repeatability and Reproducibility: Range Method, Average and Range Method, Standard GR&R Study, Analysis of Variance (ANOVA) Method.

Attribute Gage Study

Visual Inspection: Based on “Correct Decision” – Effectiveness / Miss Rate / False Alarm Rate.

Visual Standard: Based on Inter-raters Agreement – Cohen’s Kappa Value

Determination of Calibration Interval

Computation of Estimated Process Standard Deviation

Calculation of Process Capability Index

Measurement Error vs Measurement Uncertainty

Calibration System / Measurement Traceability

Major Categories of Calibration

Review and Discuss Certificate of Calibration

Determination of Calibration Interval