13 papers · ranked by Valyu relevance
Dipti Singh, Neha Chand
This study introduces a novel Parallel Grasshopper Optimization Algorithm (p-GOA), specifically designed to address reliability optimization problems. Although several hybrid algorithms exist in this field, the proposed p-GOA distinctly differs through its parallel cooperative strategy. Unlike sequential methods that…
Yancang Li, Zhen Yan
With the increase in system complexity, the intelligent heuristic optimization methods have received more and more attention on system reliability analysis. However, the objective functions and constraint conditions of system reliability are nonlinear. Thereby, a hybrid optimization method was proposed, based on the…
Van Thuy Tran, Huu Loc Nguyen, Giulia Pascoletti
The nut factor is a critical parameter that defines the relationship between tightening torque and axial preload in bolted joints. Accurate estimation of this coefficient is essential to ensure joint integrity and reliability. This study presents a controlled experimental investigation to evaluate the effects of three…
Neil Vaz, Kisung Lim, Jaeyoo Choi, Hyunchul Ju + 1 more
Polymer Electrolyte Membrane Fuel Cells (PEMFCs) have emerged as a pivotal technology in the automotive industry, significantly contributing to the reduction of greenhouse gas emissions. However, the high material costs of the gas diffusion layer (GDL) and bipolar plate (BP) create a barrier for large scale commercial…
Alexandra Brintrup, Alena Puchkova
Ensuring manufacturing reliability is key to satisfying product orders when production plants are subject to disruptions. Reliability of a supply network is closely related to the redundancy of products as production in disrupted plants can be replaced by alternative plants. However the benefits of incorporating…
Ryan O’Neil, Abdelhakim Khatab, Claver Diallo
In many industrial settings, fleets of assets are required to operate through alternating missions and breaks. Fleet Selective Maintenance (FSM) is widely used in such contexts to improve the fleet performance. However, existing FSM models assume that upcoming missions are identical and require only a single system…
Ali Reza Abbasi, Mahmoud Zadehbagheri
_ This study introduces a comprehensive model for the concurrent expansion planning of various energy systems and their associated equipment. The need to reduce network costs, emissions, losses, and feeder loading, as well as to enhance network reliability and voltage profile, mandates the utilization of proper…
Irina-Maria Dragan, Alexandru Isaic-Maniu
There is an entire field of literature on reliability models. Building reliability models is most frequently done by starting from the failure rate (or hazard rate). Creating a reliability model starts with the specific type of product behavior over time, so there are model classes for the specifics of different…
Seyed Farboud Seyedan Oskouei, Mehdi Abapour, Mojtaba Beiraghi
Electrical railways constitute a vital component of transportation infrastructure worldwide, with rolling stock representing a key element of these systems. Given the extensive operational hours of such systems, effective maintenance scheduling and asset management are imperative to ensure reliability and safety while…
Mengyao Wu, Wei Dai, Zhiyuan Lu, Yu Zhao + 1 more
In the past decade years, much attention has been attached on assembly process reliability in manufacturing system, because the quality and cost of product are highly determined by assembly process. However, existing research on reliability in assembly are mainly focused on study of size deviation propagation. In this…
Hossam A. Nabwey, Adel A. El-Faheem, Mohammed Ashraf Denguir, A. M. Rashad + 1 more
'A. M. Rashad' 'Ahmed M. Gemeay'] In this work, bridge network model with Rayleigh distribution lifetimes is used. Two main techniques are calculated to upgrade this model: reduction and redundancy techniques. In order to compare the effectiveness of the various approaches, the survival function, the mean time to…
Liying Wang, Mingjie Ding, Boshi Liu, Qingan Qiu + 1 more
Under the grid management framework for railway lines, each rail grid consists of several adjacent steel rails. The degradation processes of the steel rails within a grid are characterized by common-mode deterioration due to their similar spatial locations and accumulated gross tonnages. Additionally, in line with the…
Hady S. Abdel Hafez, Saber. M. Saleh, Mokhtar Said
The world is increasingly shifting toward sustainable and renewable energy systems due to limited fossil fuel sources as well as their negative environmental impacts. Remote coastal tourism facilities face additional challenges because of the high fuel transportation and operation costs. This study focuses on a…