期刊
INTERNATIONAL JOURNAL OF FATIGUE
卷 152, 期 -, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.ijfatigue.2021.106414
关键词
Notch fatigue; Defects; Theory of critical distances; Ductile cast iron
In this study, the possibility of inferring the critical distance from different notched geometries in fatigue critical scenarios is explored, and the proposed method is applied to notch fatigue prognosis of ductile cast iron.
In some fatigue critical scenarios, like those arising in cast or additively manufactured components, the fatigue damage mechanisms prevailing in plain and notched components might be different. This could hinder the applicability of the theory of critical distances (TCD), which postulates that the critical distance L can be inferred from a plain and a notched or cracked specimen configuration. To overcome this shortcoming, we explore in this work the possibility of inferring L from two notched geometries with different notch severity. The proposed method is applied to the notch fatigue prognosis of the ductile cast iron EN-GJS-600-3.
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