QFD Tool Documentation

QFD Tool is an engineering software for building multi-stage Quality Function Deployment pipelines, analyzing requirement and characteristic contributions, and supporting informed product design decisions.

Key Concepts

Requirement (WHAT) — customer need or expectation
Characteristic (HOW) — engineering parameter fulfilling the requirement
House of Quality — matrix connecting WHAT → HOW
Pipeline — sequence of Houses of Quality

Multi-stage Pipeline

Each stage of QFD automatically inherits characteristics from the previous stage, maintaining continuity without manual duplication.

H₀ → W₁ → H₁ → W₂ → H₂

Priorities & Contribution

Priorities are computed as normalized contributions of requirements or characteristics within each stage. At every stage, total contributions sum up to 100%.

Dominance Analysis

Dominance analysis identifies requirements that disproportionately influence final product characteristics.

Conflict Analysis

Conflicts arise when improving one characteristic negatively impacts another. QFD Tool classifies conflicts by severity.

Traceability Graph

The traceability graph visualizes the propagation of contributions from initial requirements to final engineering characteristics through all pipeline stages.

Report Export

Pro plan users can export a full PDF report including all QFD stages, summary page, and traceability graph.

Userful links

A collection of proven materials on the QFD (House of Quality) methodology, House of Quality principles, and requirements management.