Tube, Pipe & Profile Forming worked example

Swage Force Estimate with swage defect severity rating of 3 score: a worked example

Suppose swage defect severity rating falls to 3 score. This page works the full calculation at that level so you can see exactly which result moves and by how much. This tool turns the three classic FMEA ratings — severity, occurrence, and detection — into a single weighted risk score for tube swaging operations.

The inputs for this scenario

Swage defect severity rating: 3 score (the input this scenario stresses; the baseline uses 6)
Swage defect occurrence rating: 4 score (held at the documented default)
Swage defect detection rating: 3 score (held at the documented default)

Working through the calculation

The calculation starts from the formula this tool documents: Swage Force Estimate risk score = severity × 0.40 + occurrence × 0.35 + detection × 0.25.
Risk score works out to 3.35 score at these inputs, and this is the headline figure for the scenario.
Severity works out to 3 score at these inputs.
Occurrence works out to 4 score at these inputs.
Detection works out to 3 score at these inputs.

How this compares with the baseline

Against the tool's baseline example, where swage defect severity rating sits at 6 score and the headline result is 4.55 score, this scenario comes in 26.37% below the baseline at 3.35 score.
It computes a weighted swaging risk score as severity times 0.40 plus occurrence times 0.35 plus detection times 0.25. When the numbers land here, the stressed input is the lever to work; the walkthrough above shows exactly how much each output recovers as it climbs back toward the baseline.

Results at a glance

Risk score: 3.35 score (headline result)
Severity: 3 score
Occurrence: 4 score
Detection: 3 score

Run it with your numbers

To rerun this with your own numbers, open the live Swage Force Estimate calculator, set swage defect severity rating to your actual value, and adjust the remaining inputs to match your operation.

Last reviewed 2026-05-12.