Aerospace & Defense Manufacturing worked example

Material Shelf-Life Risk with expiry impact severity of 4 1-10: a worked example

Here is what the math looks like when conditions slip. We hold every other input steady and drop expiry impact severity to 4 1-10, then walk the calculation through step by step. Score shelf-life risk for aerospace prepreg, adhesive, sealant, resin, or controlled material using expiry impact, likelihood, and detection difficulty.

The inputs for this scenario

  • Expiry impact severity: 4 1-10 (the input this scenario stresses; the baseline uses 8)
  • Expiration likelihood before use: 7 1-10 (held at the documented default)
  • Detection or shelf-life extension difficulty: 6 1-10 (held at the documented default)

Working through the calculation

  • The calculation starts from the formula this tool documents: Material shelf-life risk score = severity score × likelihood score × detection difficulty score.
  • Material shelf-life risk score works out to 5.55 score at these inputs, and this is the headline figure for the scenario.
  • Expiry impact severity works out to 4 1-10 at these inputs.
  • Expiration likelihood works out to 7 1-10 at these inputs.
  • Detection or extension difficulty works out to 6 1-10 at these inputs.

How this compares with the baseline

  • Against the tool's baseline example, where expiry impact severity sits at 8 1-10 and the headline result is 7.15 score, this scenario comes in 22.38% below the baseline at 5.55 score.
  • The practical read: the gap between this scenario and the baseline is entirely attributable to expiry impact severity, so recovering it is worth quantifying in dollars before considering equipment or staffing changes. As a multiplicative score it is dominated by its highest factors and is relative, not absolute — calibrate the 1-10 scales consistently or scores won't compare across reviewers.

Results at a glance

  • Material shelf-life risk score: 5.55 score (headline result)
  • Expiry impact severity: 4 1-10
  • Expiration likelihood: 7 1-10
  • Detection or extension difficulty: 6 1-10

Run it with your numbers

  • To rerun this with your own numbers, open the live Material Shelf-Life Risk calculator, set expiry impact severity to your actual value, and adjust the remaining inputs to match your operation.

Last reviewed 2026-05-12.