... impact contribution. Zero -Wear Limit. In order to establish the zero -wear limit as a quantitative, semi-empirical relation, an extension of the Bayer-Ku zero-sliding -wear theory (Ref 24) was ... Engineers, 1985, p 57 2-5 77 16. Mark's Standard Handbook for Mechanical Engineers, E.A. Avallone and T. Baumeister III, Ed., 9th ed., McGraw-Hill, 1987, p 8-1 10 to 8-1 11 Impact Wear Peter ... 1980, p 28 3-2 99 16. G. Levy and J. Morri, Impact Fretting Wear in CO Based Environments, Wear, Vol 106, 1985, p 9 7-1 38 17. I.R. Sare, Repeated Impact-Abrasion of Ore-Crushing Hammers, Wear, ...