Dynamic crack propagation in nano-composite thin plates under multi-axial cyclic loading

Alshamma, Fathi A.; Jassim, Omar Ali

doi:10.1016/j.jmrt.2019.08.011

Cited by 3 publications

(1 citation statement)

References 5 publications

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“…In 1961, Paris et al [6] put forward the Paris formula suitable for the medium rate region on the basis of the fracture mechanics method to express the law of crack propagation, which is the most widely used method in engineering. Besides, Alshamma and Jassim [7] confirmed all parameters of the Paris Law in the experiment and found the crack growth speed through the experiment and analysis. On the basis of the previous studies, the investigation on crack growth and fracture is in the ascendant in recent years [8][9][10][11][12], and the main progress is described as follows: Lei [13] takes 2024-T4 aluminum alloy as the investigation object and uses the finite element method to investigate the influence rule and mechanism of overload condition on the change trend of subsequent fatigue crack growth rate (da/ dN).…”

Section: Introductionmentioning

confidence: 70%

SVR Prediction Algorithm for Crack Propagation of Aviation Aluminum Alloy

Chang

Wang

Zhu

et al. 2020

Journal of Mathematics

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Aluminum alloy material is an important component material in the safe flight of aircraft. It is very important and necessary to predict the fatigue crack growth between holes of aviation aluminum alloy materials. At present, the investigation on the prediction of the cracks between two holes and multiholes is a key problem to be solved. Due to the fact that the fatigue crack growth test of aluminum alloy plate with two or three holes was carried out by the MTS fatigue testing machine, the crack length growth data under different test conditions were obtained. In this paper, support vector regression (SVR) was used to fit the crack data, and the parameters of SVR are optimized by the grid search algorithm at the same time. And then the model of SVR to predict the crack length was established. Discussion on the results shows that the prediction model is effective. Furthermore, the crack growth between three holes was predicted accurately through the model of the crack law between two holes under the same load form.

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