Failure analysis on abnormal cracking of polycarbonate plates used in the gearbox oil level gauge for high-speed train

Sheng, Chang; Bi, Tong-Tong; Pan, An-Xia; Gong, Yi; Luo, Li-Yi; Chen, Jie; Yang, Zhen-Guo

doi:10.1016/j.engfailanal.2022.106871

Cited by 4 publications

(2 citation statements)

References 33 publications

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“…2. Additionally, railway vehicle gearboxes may experience tooth cracks, tooth surface damage, oil leakage, and others [3], [4]. In China, the Shaoshan series electric locomotive has experienced issues with gearbox oil leakage.…”

Section: Introductionmentioning

confidence: 99%

Dynamics and Fault Diagnosis of Railway Vehicle Gearboxes: A Review

Zhao,

Chen

2024

JDMD

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The railway vehicle gearbox is an important part of the railway vehicle traction transmission system which ensures the smooth running of railway vehicles. However, as the running speed of railway vehicles continues to increase, the railway vehicle gearbox is exposed to a more demanding operating environment. Under both internal and external excitations, the gearbox is prone to faults such as fatigue cracks, broken teeth, etc. It is crucial to detect these faults before they result in severe failures and accidents. Therefore, understanding the dynamics and fault diagnosis of railway vehicle gearbox is needed. At present, there is a lack of systematic review of railway vehicle gearbox dynamics and fault diagnosis. So, this paper systematically summarizes the research progress on railway vehicle gearbox dynamics and fault diagnosis. To this end, this paper first summarizes the latest research progress on the dynamics of railway vehicle gearboxes. The dynamics and vibration characteristics of the gearbox are summarized under internal and external excitations, as well as faulty conditions. Then, the state-of-the-art signal processing and artificial intelligence methods for fault diagnosis of railway vehicle gearboxes are reviewed. In the end, future research prospects are given. Conflict of Interest Statement The authors declare no conflicts of interest.

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Section: Introductionmentioning

confidence: 99%

Dynamics and Fault Diagnosis of Railway Vehicle Gearboxes: A Review

Zhao,

Chen

2024

JDMD

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“…Due to its high hardness, good strength, high elasticity, wear resistance, tear resistance, and aging resistance [ 1 , 2 ], PUR is widely used [ 3 , 4 , 5 , 6 ]. However, it turns out that like other polymer materials [ 7 ], PUR also has its drawbacks. Under some specific circumstances, these drawbacks are magnified.…”

Section: Introductionmentioning

confidence: 99%

Failure Analysis of Abnormal Cracking of the Track Circuit Reader Antenna Baffle for High-Speed Trains

Sheng

Yang

2023

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The track circuit reader (TCR) is an important part of train control systems. This paper reports a failure of the TCR antenna baffle, which is used to prevent the TCR antenna from being struck by foreign objects. The designed service life of the baffle is 4.8 million kilometers, but serious cracking was found during routine maintenance after only 0.67 million kilometers of operation. In order to avoid the hidden danger brought by the incident to the safe operation of the train, it is necessary to conduct a complete failure analysis of the failed TCR antenna baffle. Therefore, a comprehensive investigation of the base material, cleaning agents, crack morphologies, etc., was carried out, and the failure environment of the antenna baffle was verified by experiment. The final results show that the environmental stress cracking is the root cause of the failed antenna baffle, and the multiple bubbles produced by the formed process of the antenna baffle are another important cause. According to the conclusions, the solutions to prevent the reoccurrence of such failures are proposed. After these solutions are adopted, the number of failed antenna baffles is greatly reduced, which fully proves the correctness of this analysis.

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