Physics-of-failure models of erosion wear in electrohydraulic servovalve, and erosion wear life prediction method

X Fang, J Yao, X Yin, X Chen, C Zhang - Mechatronics, 2013 - Elsevier
A series of Physics-of-Failure (PoF) models for particle erosion wear of electrohydraulic
servovalves (EHSV), and the PoF based erosion wear service life prediction models, are …

Reliability modeling for dependent competing failure processes with mutually dependent degradation process and shock process

H Che, S Zeng, J Guo, Y Wang - Reliability Engineering & System Safety, 2018 - Elsevier
Many systems experience dependent competing failure processes resulting from
simultaneous exposure to degradation processes and random shocks. Moreover, the …

CFD analysis of flow forces and energy loss characteristics in a flapper–nozzle pilot valve with different null clearances

NZ Aung, Q Yang, M Chen, S Li - Energy conversion and management, 2014 - Elsevier
A well understanding on the flow forces and energy loss characteristics in a flapper–nozzle
pilot valve is necessarily important in the performance improvement of a two-stage …

Reliability modeling and a statistical inference method of accelerated degradation testing with multiple stresses and dependent competing failure processes

Y Liu, Y Wang, Z Fan, G Bai, X Chen - Reliability Engineering & System …, 2021 - Elsevier
In this paper, a multiple stresses reliability model with dependent competing failure
processes (DCFPs) is proposed, which includes constructing the multiple stresses …

Dynamic maintenance policy for systems with repairable components subject to mutually dependent competing failure processes

N Yousefi, DW Coit, X Zhu - Computers & Industrial Engineering, 2020 - Elsevier
In this paper, a repairable multi-component system is studied where all the components can
be repaired individually within the system. The whole system is inspected at inspection …

[HTML][HTML] Evaluation of thermal effects on temperature-sensitive operating force of flow servo valve for fuel metering unit

Y Zhang, W Shaoping, SHI Jian, W Xi - Chinese Journal of Aeronautics, 2020 - Elsevier
The temperature-induced variation in operating force of flow control valves may result in
performance degradation or even jam faults of fuel metering unit (FMU), which significantly …

[HTML][HTML] Amplitude-frequency characteristics analysis for vertical vibration of hydraulic AGC system under nonlinear action

Y Zhu, P Qian, S Tang, W Jiang, W Li, J Zhao - AIP Advances, 2019 - pubs.aip.org
Hydraulic automatic gauge control (AGC) system is the core control system to ensure the
thickness accuracy of cold-rolled plate, and the reliability of its load roll system is the key to …

A methodology for the parametric modelling of the flow coefficients and flow rate in hydraulic valves

JR Valdés, JM Rodríguez, J Saumell, T Pütz - Energy Conversion and …, 2014 - Elsevier
The main objective of this work is to develop a methodology for the parametric modelling of
the flow rate in hydraulic valve systems. This methodology is based on the derivation, from …

[HTML][HTML] Coupling behavior between adhesive and abrasive wear mechanism of aero-hydraulic spool valves

C Yunxia, G Wenjun, K Rui - Chinese journal of aeronautics, 2016 - Elsevier
Leakage due to wear is one of the main failure modes of aero-hydraulic spool valves. This
paper established a practical coupling wear model for aero-hydraulic spool valves based on …

Influence of magnetic reluctances of magnetic elements on servo valve torque motors

C Liu, H Jiang - Chinese journal of mechanical engineering, 2016 - Springer
The current research of electro-hydraulic servo valves mainly focuses on the vibration,
pressure oscillating and source of noise. Unfortunately, literatures relating to the study of the …