ABSTRACT
FIGURE6Diagramoftheequipmentrequiredtodefineafasteningstrategybasedon themeasurementofappliedtorqueandfinalclamploadonly.
AverageKT=1.370N·m/k:N
Standarddeviation=0.0352N·m/k:N
Forthissampleof25rundowns,KTvaries0.0352N·m/kNforonestandarddeviation (1a).Statisticallyprojectthisvariationtoalargerpopulationusing3aascriterion:
KTrange=averageKT±3a
LowKT=1.370-(3X0.0352)=1.2644N·m/k:N
HighKT=1.370+(3X0.0352)=1.4756N·m/k:N
ThisshowsthatKTcanbeexpectedtorangefrom1.2644to1.4756N·m/k:N.
