A study of fatigue stresses in marine propellor shafting

This paper describes an investigation carried out to study the fatigue failures of a "keyed tapered-shaft assembly" as affected by the keyway. Two fatigue testing machines were built and used: one tested a keyed assembly in reversed bending, and the other tested a keyed assembly in reversed torsion or a combination of reversed bending and reversed torsion. Both sled-runner and round-ended keyways were tested and the failures were compared with a view to establishing a law of failure.Applied Science, Faculty ofMechanical Engineering, Department ofGraduat