Reliability evaluation of standby redundant systems based on the survival signatures methods

Wang, Shaoxuan; Yao, Yingbang; Ge, Daochuan; Lin, Zhixian; Wu, Jie; Yu, Jie

doi:10.1016/j.ress.2023.109509

Cited by 7 publications

(2 citation statements)

References 27 publications

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“…Chatwattanasiri et al (2016) considered the uncertain stress-based reliability of components while optimizing the system redundancy. The survival signature approach was used by Wang et al (2023) to assess the reliability of standby redundant systems. To determine the reliability and crucial components of a piston making system for maintenance planning, Ge and Zhang (2019) employed the survival signature approaches with a multi-level strategy.…”

Section: Introductionmentioning

confidence: 99%

Reliability Equivalence Factors for Coherent System using Survival Signature

Chopra,

2024

Int. j. math. eng. manag. sci.

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This study presents a methodology aimed at enhancing the performance of coherent systems through the application of survival signature analysis, focusing on the calculation of reliability equivalence factors (REFs). In the context of system improvement, the selection of reliability improvement strategies, such as reduction and duplication, depends on various factors like space limitations, costs, and other constraints. The importance of REF lies in their ability to quantify the extent of reliability improvement, providing a clear metric for decision-makers to assess the cost-effectiveness of various enhancement strategies. The analysis focuses on two distinct types of REFs, namely, mean reliability equivalence factors (MREFs) and survival reliability equivalence factors (SREFs), targeted at reliability enhancement via strategies including component failure rate reduction and the implementation of warm standby duplication. Both perfect and imperfect switching scenarios in warm duplication are examined, with survival signature analysis applied to determine the system's survival function and mean time to failure (MTTF). The methodology's effectiveness is illustrated through a case study of a six-unit bridge system, where the components are modeled using exponential and Weibull distributions. REFs are evaluated for sequential upgrades in either individual components or entire component types. The study also conducts a comparative analysis between the reliability and MTTF of the original and improved systems across different improvement techniques.

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Section: Introductionmentioning

confidence: 99%

Reliability Equivalence Factors for Coherent System using Survival Signature

Chopra,

2024

Int. j. math. eng. manag. sci.

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“…Qian [6] proposed a Monte Carlo simulation method to study the influence of random crane movement considering radiation effect on the reliability of rail beam structure. Wang [7] proposed a fast reliability evaluation method for backup redundant systems based on survival signature. Zhu [8] proposed a reliability probabilistic modeling method based on Markov model and subset simulation to solve the reliability problem of wind turbine long-term fatigue.…”

Section: Introductionmentioning

confidence: 99%

Fault analysis and reliability evaluation for motorized spindle of cycloidal gear grinding machine based on multi-source bayes

Wang,

Zhang,

et al. 2023

Eksploatacja i Niezawodność – Maintenance and Reliability

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A Monte Carlo simulation method based on multisource bayes is proposed to improve the reliability of motorized spindles in cycloid gear grinding machines and reduce their failure rate. Based on field investigations and motorized spindle maintenance records, a fault tree model of a motorized spindle was established, and the fuzzy importance of each bottom event was evaluated. The fault tree of a motorized spindle was used as a Monte Carlo reliability simulation model, and its importance was used as the input parameter for the simulation. The reliability evaluation index of the motorized spindle was obtained at different simulation times. The feasibility and accuracy of the reliability simulation were verified by comparing the importance and simulation importance. A vibration test was designed for bearing faults with high importance, and fault extraction was performed by combining the wavelet packet transform and empirical mode decomposition. This method can also be used to simulate and analyze the reliability of other equipment or machine tools.

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