Remaining Useful Life for Heavy-Duty Railway Cast Steel Knuckles Based on Crack Growth Behavior with Hypothetical Distributions

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外文摘要：The current research on the integrity of critical structures of rail vehicles mainly focuses on the design stage,which needs an effective method for assessing the service state.This paper proposes a framework for predicting the remain-ing useful life(RUL)of in-service structures with and without visible cracks.The hypothetical distribution and delay time models were used to apply the equivalent crack growth life data of heavy-duty railway cast steel knuckles,which revealed the evolution characteristics of the crack length and life scores of the knuckle under different fracture failure modes.The results indicate that the method effectively predicts the RUL of service knuckles in different failure modes based on the cumulative failure probability curves for different locations and surface crack lengths.This study proposes an RUL prediction framework that supports the dynamic overhaul and state maintenance of knuckle fatigue cracks.

外文关键词：

Heavy-duty railwayCast steel knuckleRemaining useful lifeFatigue crack growthHypothetical distribution

作者：

Chao Wang、Tao Zhu、Bing Yang、Shoune Xiao、Guangwu Yang

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作者单位：

State Key Laboratory of Rail Transit Vehicle System,Southwest Jiao tong University,Chengdu 610031,China

基金：

National Natural Science Foundation of ChinaSichuan Provincial Outstanding Youth FundIndependent Exploration Project of State Key Laboratory of Railway Transit Vehicle System

项目编号：

5217512322JDJQ00252024RVL-T03

出版年：

2024

DOI：

10.1186/s10033-024-01052-2

中国机械工程学报

中国机械工程学会

中国机械工程学报

CSTPCD

影响因子：0.765

ISSN：1000-9345

年,卷(期)：2024.37(4)