Fractal analysis of thermal fatigue crack growth behavior in bionic units of vermicular cast iron
Anti-Corrosion Methods and Materials
ISSN: 0003-5599
Article publication date: 11 April 2022
Issue publication date: 14 April 2022
Abstract
Purpose
The purpose of this paper is to clarify the growth behavior of fatigue cracks on bionic coupling surface of vermicular cast iron.
Design/methodology/approach
The thermal fatigue cyclic experiments were carried out on the bionic specimens processed by laser bionic treatment, in which the thermal fatigue was generated by heating at 600°C ± 5°C and cooling at 25°C ± 5°C. The thermal fatigue cracks of bionic units were analyzed using fractal theory. The relation between fractal dimensions of thermal fatigue cracks and thermal fatigue cycles was discussed.
Findings
The results show that the fractal dimensions can better characterize the fatigue crack growth behavior on bionic coupling surface of vermicular cast iron.
Originality/value
The fractal theory is first used to discuss the growth behavior of fatigue cracks on bionic coupling surface of vermicular cast iron, which is processed by laser bionic treatment.
Keywords
Acknowledgements
This paper was supported by Liaoning Province Education Department, China (L2019LKYJC-01 and L2020lkyjc-04).
Citation
Liu, Y. and Wang, Y. (2022), "Fractal analysis of thermal fatigue crack growth behavior in bionic units of vermicular cast iron", Anti-Corrosion Methods and Materials, Vol. 69 No. 3, pp. 217-223. https://doi.org/10.1108/ACMM-08-2021-2528
Publisher
:Emerald Publishing Limited
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