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The graph depicts the average fretting and corrosion scores (with SDs) for both the taper and the trunnion. Taper fretting was significantly less for PCA tapers compared with 12/14 and V40 tapers. Moreover, PCA tapers had significantly less taper corrosion in comparison to C-tapers, V40 tapers, and 11/13 tapers. Finally, both PCA and 12/14 trunnions had significantly less fretting when compared with V40 or Type I trunnions.
