A Multi-Scale Model for Predicting Physically Short Crack and Long Crack Behavior in Metals
Year: 2024
Type: article
Abstract: The fatigue behavior of metal specimens is influenced by defects, material properties, and loading. This study aims to establish a multi-scale fatigue crack growth model that describes physically short crack (PSC) and long crack (LC) behavior. The model allows the calculation of crack growth rates for uniaxial loading at different stress ratios based on the material properties and specimen geometry. Furthermore, the model integrates the Gaussian distribution theory to consider material heterogeneity and the experimental measurement errors that cause fatigue scatter. The crack growth rate and fatigue life of metal specimens with different notch geometry were predicted. The curves generated by the multi-scale model were mainly consistent with the test data from the published literature at the PSC and LC stages.
Source: Materials
DOI: 10.3390/ma17215163
Authors: Xing Yang, Chunguo Zhang, Panpan Wu, Anye Xu, Pengfei Ju, Dandan Yang, Zhonghong Dong
Institution: Chang'an University
Language: English
Subfield: Mechanics of Materials
Field: Engineering
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $2,955
OpenAlex ID: W4403685601