Fatigue Reliability Analysis Method of Reactor Structure Considering Cumulative Effect of Irradiation
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 mode...
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author | Bo Sun Junlin Pan Zili Wang Yi Ren Dariusz Mazurkiewicz Małgorzata Jasiulewicz-Kaczmarek Katarzyna Antosz |
author_facet | Bo Sun Junlin Pan Zili Wang Yi Ren Dariusz Mazurkiewicz Małgorzata Jasiulewicz-Kaczmarek Katarzyna Antosz |
author_sort | Bo Sun |
collection | DOAJ |
description | 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. |
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format | Article |
id | doaj.art-1c81e22714e743eda77caaecd0ff08cf |
institution | Directory Open Access Journal |
issn | 1996-1944 |
language | English |
last_indexed | 2024-03-09T05:07:46Z |
publishDate | 2021-02-01 |
publisher | MDPI AG |
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series | Materials |
spelling | doaj.art-1c81e22714e743eda77caaecd0ff08cf2023-12-03T12:52:56ZengMDPI AGMaterials1996-19442021-02-0114480110.3390/ma14040801Fatigue Reliability Analysis Method of Reactor Structure Considering Cumulative Effect of IrradiationBo Sun0Junlin Pan1Zili Wang2Yi Ren3Dariusz Mazurkiewicz4Małgorzata Jasiulewicz-Kaczmarek5Katarzyna Antosz6School of Reliability and Systems Engineering, Beihang University, No.37 XueYuan RD. Haidian, Beijing 100191, ChinaSchool of Reliability and Systems Engineering, Beihang University, No.37 XueYuan RD. Haidian, Beijing 100191, ChinaSchool of Reliability and Systems Engineering, Beihang University, No.37 XueYuan RD. Haidian, Beijing 100191, ChinaSchool of Reliability and Systems Engineering, Beihang University, No.37 XueYuan RD. Haidian, Beijing 100191, ChinaMechanical Engineering Faculty, Lublin University of Technology, ul. Nadbystrzycka 36, 20-618 Lublin, PolandFaculty of Management Engineering, Poznan University of Technology, ul. Rychlewskiego 2, 60-965 Poznan, PolandFaculty of Mechanical Engineering and Aeronautics, Rzeszow University of Technology, al. Powstańców Warszawy 8, 35-959 Rzeszow, PolandThe 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.https://www.mdpi.com/1996-1944/14/4/801fatiguereliabilityneutron doseirradiation effectreactor structure |
spellingShingle | Bo Sun Junlin Pan Zili Wang Yi Ren Dariusz Mazurkiewicz Małgorzata Jasiulewicz-Kaczmarek Katarzyna Antosz Fatigue Reliability Analysis Method of Reactor Structure Considering Cumulative Effect of Irradiation Materials fatigue reliability neutron dose irradiation effect reactor structure |
title | Fatigue Reliability Analysis Method of Reactor Structure Considering Cumulative Effect of Irradiation |
title_full | Fatigue Reliability Analysis Method of Reactor Structure Considering Cumulative Effect of Irradiation |
title_fullStr | Fatigue Reliability Analysis Method of Reactor Structure Considering Cumulative Effect of Irradiation |
title_full_unstemmed | Fatigue Reliability Analysis Method of Reactor Structure Considering Cumulative Effect of Irradiation |
title_short | Fatigue Reliability Analysis Method of Reactor Structure Considering Cumulative Effect of Irradiation |
title_sort | fatigue reliability analysis method of reactor structure considering cumulative effect of irradiation |
topic | fatigue reliability neutron dose irradiation effect reactor structure |
url | https://www.mdpi.com/1996-1944/14/4/801 |
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