Estimation of lifespan of diesel locomotive engine

Bhardwaj, Sunil; Bhardwaj, Nitin; Kumar, Vijay; Parashar, Bhupender

doi:10.1080/02522667.2019.1641895

Cited by 7 publications

(5 citation statements)

References 2 publications

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“…The Weibull distribution has a lot of applications in many different fields of science and technology, − in particular, among others, it has been profitably employed to describe the size of particles obtained in fragmentation processes (e.g., grinding, milling, and crushing operations). − It goes without saying that our size distribution has to do with a kind of “particles” of completely different nature: they are holes, namely lack of molecules. This simple fact is already interesting in itself, and we wondered if we were dealing with something more general.…”

Section: Resultsmentioning

confidence: 99%

Morphological Study of a Self-Organized Corrole Film on a Gold Crystal, both in Solution and after Solvent Evaporation

et al. 2023

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The morphology of the film created by the aggregation of corrole molecules from ethanol solution onto the surface of gold substrate was studied by scanning tunneling microscopy both: (i) in situ, namely in quasi-equilibrium (wet sample), and (ii) ex situ, i.e., removing the substrate from the fluid cell and leaving the residual amount of solution on the substrate to desiccate (dry sample). Despite the different conditions, the morphology of the corrole overlayer formed on the film of molecules is reminiscent, in both cases, of the leopard skin; the "speckles" are actually areas where the molecular overlayer of flat molecules is not completed. We quantitatively compared these two similar morphologies by studying the power spectral density of the images, the fractal dimension D P of the hole perimeters, and the cumulative distribution function of the hole areas. We found that the last layer of both films, in spite of very different formation conditions, differed from each other only by a scale factor.

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Section: Resultsmentioning

confidence: 99%

Morphological Study of a Self-Organized Corrole Film on a Gold Crystal, both in Solution and after Solvent Evaporation

et al. 2023

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“…Reliability system is defined as the probability that the system will work successfully after time (t), or the probability that the system will not fail during the period , -. [6], [8] The importance of the system reliability lies in the nature of the relationships that connect those components, i.e. the system type based on the nature of the link between its components, so it is necessary to know the pattern of behavior of these components and then their impact on this system, thus the systems can be classified into two main types: [11] Series System: In this system type any component leads to the failure of the entire system because the components are connected respectively.…”

Section: Systems Reliabilitymentioning

confidence: 99%

A comparison and an application of reliability, reliability system, hybrid reliability system functions for Rayleigh, Pareto, and Rayleigh Pareto distributions

أ.م.د.رواء صالح محمد صالح,

م.فراس منذر جاسم

2024

J. Admin. Econ.

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This study dealt with the analysis of the reliability function for hybrid systems with asymmetric components, where the operating times of these components follow Rayleigh, Pareto, and Rayleigh Pareto distributions, furthermore, we introduced a method of operation based on hybrid systems in order to increase the reliability of the machines operating times. Different simulation experiments were done to estimate the reliability function of these systems using the ML method, then a comparison was made between those estimators, the simulation results proved that the Rayleigh-Pareto distribution gives the best estimate for the reliability functions, also the estimated values for the reliability function for the hybrid parallel-series system greater than the estimated values of the reliability function for the hybrid series-parallel system, finally, the estimated reliability function values of the proposed system are better than the estimated values of the two other systems. In the application part, it was chosen the operating times for the machines of the University House for printing, publishing ,and translation in Baghdad, where the factory management depends on the system hybrid serial-parallel system to operate the factory machines, this system leads to a decrease in the reliability of the operating times of the factory machines to 50% at the first operating hour, but if the blistering hybrid system is followed, i.e. the similar machines are run in parallel, and the different machines are run in series, then the probability that the machinery system will continue to operate for four hours will be 50%.

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“…The Semi Markov process is used, as well as regeneration point techniques. The complete duration of a diesel locomotive engine was explored by S. Bhardwaj et al [17]. The mathematical model was created for this purpose.…”

Section: Reliability Analysis Of Industrial Model Using Redundancy Te...mentioning

confidence: 99%

“…ECS Transactions, 107 (1) 7273-7280 (2022) Ψ = q © Ψ Ψ = Z + q © Ψ + q © Ψ + q © Ψ + q © Ψ + q © Ψ Ψ = q © Ψ + q © Ψ + q © Ψ Ψ = Z + q © Ψ + q © Ψ + q © Ψ Ψ = Z + q © Ψ Ψ = Z + q © Ψ + q © Ψ + q © Ψ [17][18][19][20][21][22] The resulted value of availability V is calculated from above equations as: where D ′ is same as D ′…”

Section: Repairman (𝐫 ) and Inspection Period In The Systemmentioning

confidence: 99%

Reliability Analysis of Industrial Model Using Redundancy Technique and Geometric Distribution

2022

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The present paper is an initiative towards analyzing the maintenance process of an industrial model using regenerative techniques. With an increase in demands to analyze the reliability of any industrial models following continuous or discrete distribution, the major concern to be considered inspect the possibility and level of failure and proceeding the failed unit for further repairing process. The system consists of two parallel units following the passive standby redundancy and with different failure mechanism. The proposed analytical methodology in the paper made it possible to assess the reliability of the whole system in the event of failure of its components. The stochastic analysis of reliability characteristics of the considered system to the types of repair time distributions was also studied using geometric distribution. The numerical equations and results being calculated for reliability parameters like mean time to system failure, availability of system in operative form, down period of the system following repair mechanism, using regenerative techniques, and geometric distribution. Graphical and analytical analysis were presented.

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Estimation of lifespan of diesel locomotive engine

Cited by 7 publications

References 2 publications

Morphological Study of a Self-Organized Corrole Film on a Gold Crystal, both in Solution and after Solvent Evaporation

Morphological Study of a Self-Organized Corrole Film on a Gold Crystal, both in Solution and after Solvent Evaporation

A comparison and an application of reliability, reliability system, hybrid reliability system functions for Rayleigh, Pareto, and Rayleigh Pareto distributions

Reliability Analysis of Industrial Model Using Redundancy Technique and Geometric Distribution

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