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Keyway stresses when torsional loading is applied by the keys

Stress concentrations are measured at keyway ends where helical fractures have begun in large-diameter shafts in torsion due to forces applied through the keys in these keyways

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Abstract

Guided by failure of large-diameter shafts, photoelastic measurements were made of stresses near the inboard ends of keyways containing keys which provided the forces necessary to place the shaft in torsion. Tensile-stress concentrations not previously reported were found at or near the inboard ends of these keys and keyways. The locations and magnitudes of these stress concentrations correlate well with fractures which have been found to begin at or near these same locations in large marine and compressor shafts.

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Abbreviations

K :

stress-concentration factor

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Orthwein, W.C. Keyway stresses when torsional loading is applied by the keys. Experimental Mechanics 15, 245–248 (1975). https://doi.org/10.1007/BF02319434

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  • DOI: https://doi.org/10.1007/BF02319434

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