Specific wear rate (ball-on-disk, nominal point contact)
Specific wear rate from a ball-on-disk test, derived from the worn spherical-cap volume (from the measured wear scar radius on a ball of known radius), normal load and sliding distance.
Worn volume, V9.850387279840077e-24 mm³
Specific wear rate, k1.8241457925629774e-30 mm³/N·m
Method & references
- Specific wear rate k = V / (F · s) from a ball-on-disk test.
- Worn volume from the spherical-cap scar geometry (nominal point contact).
The computation is a literal port of the original client-side JavaScript from /calculators/e4_2.htm. Results are verified equal to the original by an automated golden-master test. No formula has been re-derived or “improved”.