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GlossaryMethodology

FMEA (Failure Mode and Effects Analysis)

A systematic method for identifying potential failure modes, their causes, and effects. Uses Severity, Occurrence, and Detection ratings (1-10) to calculate a Risk Priority Number (RPN = S x O x D).

Key Benchmarks

RPN threshold: >100 requires action
Typical failure modes: 20-50 per process
Risk reduction target: 50-80%

Related Terms

DMAIC (Define-Measure-Analyze-Improve-Control)

The core Six Sigma improvement methodology. Define the problem, Measure current performance, Analyze root causes, Improve the process, and Control to sustain gains.

Six Sigma

A data-driven methodology for eliminating defects and reducing process variation. Achieving Six Sigma means only 3.4 defects per million opportunities (DPMO). Uses statistical tools and the DMAIC framework.

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