Effect of loading type on S-N fatigue behavior of SPRC340 steel sheet |
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| Authors: | Jaeki Kwon Youngju Kim Seungzeon Han Masahiro Goto Sangshik Kim |
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| Affiliation: | (1) Orthopaedic Biomechanics Laboratory, Sunnybrook and Women's College Health Sciences Centre, University of Toronto, 2075 Bayview Avenue, UB19, Toronto, Ontario, Canada, M4N 3M5;(2) Department of Surgery, University of Toronto, Toronto, Ontario, Canada;(3) Institute of Biomaterials and Biomedical Engineering and Institute of Medical Sciences, Toronto, Ontario, Canada;(4) Orthopaedic Biomechanics Laboratory UB19, Sunnybrook and Women's College Health Sciences Centre, 2075 Bayview Avenue, UB19, Toronto, Ontario, Canada, M4N 3M5; |
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| Abstract: | In the present study, the effect of loading type on S-N fatigue behavior was examined using a 0.7 mm thick SPRC340 (Fe-0.08C-0.7Mn-0.5Si-0.12P-0.03S)
steel sheet product. In contrast with the commonly held belief that the apparent fatigue resistance under bending is higher
than that under uniaxial loading, the present specimens tended to show lower fatigue resistance under bending than under uniaxial
loading. This trend appeared to be associated with several factors, including multi-site crack initiation on both sides of
the specimen in bending, increasing error in the elastic bending stress calculation, and cyclic hardening during fatigue.
The effects of loading type, including uniaxial loading and bending, on the S-N fatigue behavior are discussed. |
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