Research on Degradation Model of Marine Seawater Centrifugal Pump Based on Main Mechanism of Cavitation Erosion

Xiaoli Yang (), Yong Wang (), Yutong Luo () and Hongwei Hu ()
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Xiaoli Yang: CSSC Southwest (Chongqing) Equipment Research Institute Co., Ltd
Yong Wang: Chongqing Yuejin Machinery Factory Co., LTD
Yutong Luo: Chongqing Yuejin Machinery Factory Co., LTD
Hongwei Hu: CSSC Southwest (Chongqing) Equipment Research Institute Co., Ltd

A chapter in Data-Driven Methods for Reliability and Safety Engineering: Applications in Industrial Systems, 2026, pp 541-555 from Springer

Abstract: Abstract Degradation models are fundamental for predicting equipment failures, evaluating remaining useful life, and informing preventive maintenance strategies. This study selects a marine seawater centrifugal pump as the subject of investigation. Through a combination of theoretical analysis and experimental approaches, critical degradation factors and underlying mechanisms are identified. Physical and chemical examinations of samples that failed during service indicate that cavitation erosion is the primary mode of degradation. A degradation testing protocol is developed based on the Knapp cavitation quantitative damage model. A 4000-h performance degradation experiment is implemented using a purpose-built seawater test platform to generate the necessary data for model development.

Keywords: Reliability; Marine seawater centrifugal pump; Degradation model; Cavitation erosion (search for similar items in EconPapers)
Date: 2026
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Persistent link: https://EconPapers.repec.org/RePEc:spr:ssrchp:978-3-032-22873-4_40

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DOI: 10.1007/978-3-032-22873-4_40

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