Determination of Critical Length Parameter for Fatigue Lifetime Predictions of Notched Specimens

Transactions of the VSB-Technical University of Ostrava. Civil Engineering Series

article

Kamila Kozakova,¹  Jan Klusak¹ 

[1] Institute of Physics of Materials, Czech Academy of Sciences;Faculty of Mechanical Engineering, Brno University of Technology

关键词: Critical length parameter;    Wöhler curve;    notches;    Theory of Critical Distances;    LineMethod;    lifetime predictions;    fatigue;    very highcycle fatigue;   

DOI  :  10.35181/tces-2022-0009

来源: Walter de Gruyter GmbH

【 摘 要 】

The paper reviews the research results to date on critical length parameters of notched aluminum specimens with various notch radii. The Theory of Critical Distances (TCD) was applied in form of the Line Method for the determination of the critical length parameter. This parameter can be used for lifetime predictions of notched components. The output is a comparison of critical length parameters of specimens with various notch radii. Numerical calculations as well as experimentally obtained data were employed in the analysis. Fatigue experiments were performed at fatigue loading device working at ultrasonic frequency of 20 kHz. Thus we were able to reach very high number of cycles to failure.

【 授权许可】

Unknown