Fatigue strength study based on geometric shape of bulk defects in cast steel
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In: International Journal of Fatigue, Vol. 163.2022, No. October, 107082, 18.06.2022.
Research output: Contribution to journal › Article › Research › peer-review
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TY - JOUR
T1 - Fatigue strength study based on geometric shape of bulk defects in cast steel
AU - Horvath, Michael
AU - Stoschka, Michael
AU - Fladischer, Stefan
PY - 2022/6/18
Y1 - 2022/6/18
N2 - This work applies Taylor’s Theory of Critical Distances (TCD) to assess the fatigue strength of defect-afflicted cast steel components made of G21Mn5+N. Based on radiographs of complexly shaped spatial imperfections, the established TCD-framework leads to a sound agreement of numerical and experimental fatigue strength. Moreover, a novel fatigue assessment methodology is presented, which bases on the projected planar defect shape, featuring an engineering-feasible design method without the need of extensive numerical simulations. About one-hundred additional imperfections referring to ASTM E446 class A and C validate the model, showing an average deviation of about five percent in fatigue strength.
AB - This work applies Taylor’s Theory of Critical Distances (TCD) to assess the fatigue strength of defect-afflicted cast steel components made of G21Mn5+N. Based on radiographs of complexly shaped spatial imperfections, the established TCD-framework leads to a sound agreement of numerical and experimental fatigue strength. Moreover, a novel fatigue assessment methodology is presented, which bases on the projected planar defect shape, featuring an engineering-feasible design method without the need of extensive numerical simulations. About one-hundred additional imperfections referring to ASTM E446 class A and C validate the model, showing an average deviation of about five percent in fatigue strength.
U2 - 10.1016/j.ijfatigue.2022.107082
DO - 10.1016/j.ijfatigue.2022.107082
M3 - Article
VL - 163.2022
JO - International Journal of Fatigue
JF - International Journal of Fatigue
SN - 0142-1123
IS - October
M1 - 107082
ER -