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Article

Fatigue Reliability Analysis Method of Reactor Structure Considering Cumulative Effect of Irradiation

1
School of Reliability and Systems Engineering, Beihang University, No.37 XueYuan RD. Haidian, Beijing 100191, China
2
Mechanical Engineering Faculty, Lublin University of Technology, ul. Nadbystrzycka 36, 20-618 Lublin, Poland
3
Faculty of Management Engineering, Poznan University of Technology, ul. Rychlewskiego 2, 60-965 Poznan, Poland
4
Faculty of Mechanical Engineering and Aeronautics, Rzeszow University of Technology, al. Powstańców Warszawy 8, 35-959 Rzeszow, Poland
*
Authors to whom correspondence should be addressed.
Academic Editor: Aleksey Yaremchenko
Materials 2021, 14(4), 801; https://doi.org/10.3390/ma14040801
Received: 9 January 2021 / Revised: 29 January 2021 / Accepted: 2 February 2021 / Published: 8 February 2021
(This article belongs to the Special Issue Modeling and Experimental Analysis of Metal Forming and Cutting)
The influence of irradiation should be considered in fatigue reliability analyses of reactor structures under irradiation conditions. In this study, the effects of irradiation hardening and irradiation embrittlement on fatigue performance parameters were quantified and a fatigue life prediction model was developed. Based on this model, which takes into account the cumulative effect of a neutron dose, the total fatigue damage was calculated according to Miner’s linear cumulative damage law, and the reliability analysis was carried out using the Monte Carlo simulation method. The case results show that the fatigue life acquired by taking into account the cumulative effect of irradiation was reduced by 24.3% compared with that acquired without considering the irradiation effect. Irradiation led to the increase of the fatigue life at low strains and its decrease at high strains, which is in accordance with the findings of an irradiation fatigue test. The rate of increase in the fatigue life decreased gradually with the increase of the neutron dose. The irradiation performance parameters had a small influence on fatigue reliability, while the fatigue strength coefficient and the elastic modulus had a great influence on the fatigue reliability. Compared with the current method, which uses a high safety factor to determine design parameters, a fatigue reliability analysis method taking into account the cumulative effect of irradiation could be more accurate in the reliability analysis and life prediction of reactor structures. View Full-Text
Keywords: fatigue; reliability; neutron dose; irradiation effect; reactor structure fatigue; reliability; neutron dose; irradiation effect; reactor structure
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MDPI and ACS Style

Sun, B.; Pan, J.; Wang, Z.; Ren, Y.; Mazurkiewicz, D.; Jasiulewicz-Kaczmarek, M.; Antosz, K. Fatigue Reliability Analysis Method of Reactor Structure Considering Cumulative Effect of Irradiation. Materials 2021, 14, 801. https://doi.org/10.3390/ma14040801

AMA Style

Sun B, Pan J, Wang Z, Ren Y, Mazurkiewicz D, Jasiulewicz-Kaczmarek M, Antosz K. Fatigue Reliability Analysis Method of Reactor Structure Considering Cumulative Effect of Irradiation. Materials. 2021; 14(4):801. https://doi.org/10.3390/ma14040801

Chicago/Turabian Style

Sun, Bo, Junlin Pan, Zili Wang, Yi Ren, Dariusz Mazurkiewicz, Małgorzata Jasiulewicz-Kaczmarek, and Katarzyna Antosz. 2021. "Fatigue Reliability Analysis Method of Reactor Structure Considering Cumulative Effect of Irradiation" Materials 14, no. 4: 801. https://doi.org/10.3390/ma14040801

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