This webapp is for calculating peening intensity as defined in SAE J443. It has evolved from the Almen Saturation Curve Solver spreadsheet program developed by Dr. David Kirk and widely used around the world. Like Dr. Kirk’s program, it generates a fitted curve through the given data points. Then using the corrected arc heights from the curve it locates the one arc height that increases by 10% for the doubling of exposure time. This arc height is the intensity value.
Click image to open the app. Instructions for use are available via the menu on the app page.