Golf Club Fatigue — Parameter Review
Ties the whole golf tool chain together into one review: club type, face material, thickness, surface finish, and player type drive the impact stress (same Hertzian contact + plate-bending physics as Golf Club Face and Ball Impact), and crack life comes from the same Paris' Law growth used in Golf Club Face Fracture Review — but here, the initial flaw size is the variable under review: derived from surface finish, set to an aerospace flaw size, or entered directly. Have your own tested material data? Test Data Input — Material Properties turns it into a real, test-derived material right in the dropdown below.
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Bold curve sweeps the selected variable for the currently selected material, holding everything else at the values on the left. Dark dashed line and marker show the current single-point result. Check "Compare all materials" to overlay all 12 as faint colored lines (legend below the chart).
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Modulus and yield strength are fixed material properties; crack life is computed at your current club, thickness, player, and flaw-size settings (left) — changing those changes the third panel. The currently selected material is highlighted; hover any bar's label to identify it.
▾ Methodology, equations, and caveats
This tool chains the same Hertzian contact + plate bending physics as Impact Mechanics with the same Paris' Law integration as Fracture Review, with initial flaw size (from surface finish, an aerospace flaw size, or a custom value) as the variable under review. See the Golf Analysis Tools User Handbook for how to use this tool's inputs and outputs.