Abrasive Blasting, Shot Peening & Surface Prep worked example

Shot Peening Intensity Lower-Limit Margin with measured almen intensity of 0.03 A units: a worked example

Push measured almen intensity up to 0.03 A units and the picture changes. This example computes every intermediate figure at that operating point. you need to know whether an Almen strip reading has enough margin above the minimum peening intensity

The inputs for this scenario

  • Measured Almen intensity: 0.03 A units (raised for this scenario; the documented default is 0.01)
  • Minimum approved intensity: 0.01 A units (unchanged)
  • Nominal target intensity: 0.01 A units (unchanged)

Working through the calculation

  • Applying the documented formula (Intensity margin = measured Almen intensity - minimum approved intensity) to the inputs above produces each figure below.
  • At this operating point the engine returns 220 % margin for lower-limit margin, the number this scenario is built around.
  • At this operating point the engine returns 0.02 A units for intensity above minimum.
  • At this operating point the engine returns 0.03 A units for measured intensity.
  • At this operating point the engine returns 0.01 A units for minimum intensity.

How this compares with the baseline

  • Against the tool's baseline example, where measured almen intensity sits at 0.01 A units and the headline result is 20 % margin, this scenario comes in 1,000% above the baseline at 220 % margin.
  • It computes the gap between measured and minimum-approved Almen intensity, then divides that gap by the nominal target to express it as a percent margin. The value of this scenario is the size of the gap it exposes: that gap, priced out over a year, is the budget you can justify spending to close it.

Results at a glance

  • Lower-limit margin: 220 % margin (headline result)
  • Intensity above minimum: 0.02 A units
  • Measured intensity: 0.03 A units
  • Minimum intensity: 0.01 A units

Run it with your numbers

  • Every input above is editable in the live Shot Peening Intensity Lower-Limit Margin calculator, which recalculates instantly and can be shared with the inputs intact.

Last reviewed 2026-05-12.