Table 3.

P values for comparisons of static (μS) and kinetic (μK) friction coefficients and the difference between them (μS – μK) among rope types within each ring materialz.

μSμKμS – μK
AL rings
SBHV > XTCS  0.0033<0.0001  1.0000
SP < TB  1.0000  0.9917  1.0000
PAL rings
AP > SP  0.1752  0.9849<0.0001
AP > TB  0.0005  0.9875  0.0051
BLAZE < FLY<0.0001<0.0001  1.0000
BS > SB  1.0000  1.0000  1.0000
BS > SBHV  0.9530<0.0001  0.4871
BS > XTCP  0.1195  0.1086  1.0000
BS > XTCS  0.9998  0.4046  1.0000
SB > SBHV  0.8949  0.0014  0.9931
SB > XTCP  0.0707  0.6992  0.9270
SB > XTCS  0.9987  0.9582  1.0000
SBHV > XTCP  0.9981  0.5973  0.0042
SBHV > XTCS  1.0000  0.3399  0.9726
SP > TB  0.9986  0.0219  0.9792
TM < SB3  0.9575  0.9430  0.0048
XTCP > XTCS  0.8352  1.0000  0.7963
STEEL rings
AP > SP  0.9762  1.0000  0.4921
AP > TB<0.0001<0.0001  0.1978
BLAZE < FLY<0.0001<0.0001  0.9906
BS > SB  0.0859  0.0139  1.0000
BS > SBHV<0.0001<0.0001  1.0000
BS > XTCP<0.0001<0.0001  1.0000
BS > XTCS<0.0001<0.0001  1.0000
SB > SBHV<0.0001<0.0001  1.0000
SB > XTCP  0.9909  0.6218  1.0000
SB > XTCS  0.9981  0.8546  1.0000
SBHV < XTCP  0.0002<0.0001  1.0000
SBHV < XTCS  0.0002<0.0001  1.0000
SP > TB<0.0001<0.0001  1.0000
TM < SB3  1.0000  0.1984  0.5205
XTCP > XTCS  1.0000  1.0000  1.0000

  • ↵zOnly ropes of similar construction are compared. Two rope types in the left hand column are separated by < or >, which denote that the first rope type is less than or greater than, respectively, the second rope type. The P value indicates whether the difference between rope types was significant. See Table 1 for rope and ring abbreviations and Table 2 for means of μS, μK, and μS – μK for each rope.