Towards the Automated Verification of Weibull Distributions for System Failure Rates

Yu, Lu; Miller, Alice; Hoffmann, R.; Johnson, Christopher W.

doi:10.1007/978-3-319-45943-1_6

Cited by 7 publications

(3 citation statements)

References 19 publications

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“…Minimum weight, low consumption and high reliability are the three main requirements for these subsystems [1]. Figure 1 presents different arrangements of the main satellite subsystems [15,16].…”

Section: Satellite Classification and Essential Subsystemsmentioning

confidence: 99%

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Basic Principles and Mechanical Considerations of Satellites: A Short Review

Reda,

Ahmed,

Magdy

et al. 2023

Transactions on Aerospace Research

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Satellites are used for navigation, communication, oceanography, astronomy, etc.. Satellites come in a diversity of sizes and forms. Depending on the satellite’s mission, different subsystems are used. These subsystems are installed inside a housing to protect them from the space environment. This housing, which is also known as the satellite primary structure or mechanical structure, is made of durable materials that can endure severe conditions during launch and in the orbit. The optimisation of satellite mass is crucial right now since satellites are losing mass every day to reduce the cost of manufacturing and launching. This review first introduces an overview of the satellite classifications and subsystems. Then, the different types of mechanical load analysis the satellite subjects itself to are demonstrated. The advanced approaches for promoting the performance of the mechanical structures of satellites are explored, with a spotlight on the effect of the optimisation parameters of isogrid and honeycomb sandwich structures on the mechanical performance of the satellite primary structure. The assembly, integration and testing (AIT) of the small satellite are briefly presented. Finally, the important potential designs to improve the mechanical performance of the satellite primary structure and the challenges of further research are summarised.

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Section: Satellite Classification and Essential Subsystemsmentioning

confidence: 99%

“…(A) (B) Figure 1. Different arrangements of the main satellite subsystems: (A) remote sensing satellite [15] and (B) Ionospheric Observation Nanosatellite Formation [16].…”

Section: Satellite Classification and Essential Subsystemsmentioning

confidence: 99%

Basic Principles and Mechanical Considerations of Satellites: A Short Review

Reda,

Ahmed,

Magdy

et al. 2023

Transactions on Aerospace Research

View full text Add to dashboard Cite

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“…Weibull distributions can be used to accurately model failure behaviors of a wide range of critical systems such as the critical equipment of a power plant [10], [11].…”

Section: Weibull Failure Rate Functionmentioning

confidence: 99%

A Feed-Forward Backpropagation Neural Network Method for Remaining Useful Life Prediction of Francis Turbines

Aguinaga¹,

Luo²,

Hidalgo³

et al. 2017

World Congress on Mechanical, Chemical, and Material Engineering

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-In this paper, a method based on feed-forward backpropagation artificial neural networks is developed to achieve a more accurate prediction of the useful life of the Francis turbines, subject to the monitoring of the condition. Predicting the remaining life of the Francis turbine components is critical to an effective condition-based maintenance to improve reliability and reduce overall maintenance costs. With the correct instrumentation it is possible to periodically measure and calculate the necessary operating parameters and, in the present investigation, having input data, the vibration severity in speed magnitude and the turbine efficiency, there will be trained a feed-forward backpropagation neural network in such a way as to obtain the Weibull failure rate function of the Francis Turbine. A two-element input vector is introduced with 100 samples for each input; the targets (100 samples) of Weibull failure rate function are also introduced. The method developed, for its consistency and effectiveness, can be generalized to systems and rotating equipment.

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