Time-varying Reliability Evaluation Method of Steam Generator Heat Transfer Tubes Considering Fretting Wear

Xue Yingcheng; Wu Zonghui; He Jian

doi:10.13832/j.jnpe.2024.01.0164

Volume 45 Issue 1

Feb. 2024

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Xue Yingcheng, Wu Zonghui, He Jian. Time-varying Reliability Evaluation Method of Steam Generator Heat Transfer Tubes Considering Fretting Wear[J]. Nuclear Power Engineering, 2024, 45(1): 164-170. doi: 10.13832/j.jnpe.2024.01.0164

Citation:

Xue Yingcheng, Wu Zonghui, He Jian. Time-varying Reliability Evaluation Method of Steam Generator Heat Transfer Tubes Considering Fretting Wear[J]. Nuclear Power Engineering, 2024, 45(1): 164-170. doi: 10.13832/j.jnpe.2024.01.0164

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Time-varying Reliability Evaluation Method of Steam Generator Heat Transfer Tubes Considering Fretting Wear

doi: 10.13832/j.jnpe.2024.01.0164

School of Aerospace and Architectural Engineering, Harbin Engineering University, Harbin, 150001, China

Received Date: 2023-03-05
Rev Recd Date: 2023-09-20
Publish Date: 2024-02-15

Abstract

Abstract

In order to investigate the impact of fretting wear on the reliability of steam generator heat transfer tubes under impact, an evaluation method for the safety performance of steam generator heat transfer tubes was established. By fitting the distribution form of the wear coefficient of the heat transfer tube, a time-varying wear model of the heat transfer tube was established. Using the multiplier dimensionality reduction method to obtain the fractional moment of the limit state of the heat transfer tube, and using the NM (Nelder Mead) simplex algorithm to optimize the maximum entropy parameter to calculate the failure probability of the heat transfer tube. Based on the time discrete method, the time-varying reliability of steam generator heat transfer tubes under impact and fretting wear is studied. The results indicate that when the reliability index greater than 2 is taken as the acceptable standard of structural reliability, the time-varying reliability of the steam generator heat transfer tubes subjected to impact cannot meet the requirements in the 10th year of wear.
- Time-varying reliability,
- Fretting wear,
- Steam generator heat transfer tube,
- Maximum entropy principle

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References(15)

References

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