TourTour specific wear rate PIN ON RING
Input of scar depth and width
 semi scar width 10-3 m
 scar depth h 10-6 m
 scar length L 10-3 m
 load F N
 sliding distance s m
 scar radius 10-6 m3
 wear volume V 10-12 m3
 specific wear rate k = V / Fs 10-15 m2/N
  Calculator with input of semi scar width b and ring radius r