Results 1 to 10 of about 45,359 (268)

Reliability Analysis of Vital Computer in Railway

open access: yes机车电传动, 2021
Railway transit vital computer is the core equipment to ensure the safe and reliable operation of train. The common architecture of vital computer on rail transit was described, and the key reliability indexes by reliability analysis was calculated.
Zhulin SHEN, Fei DAI
doaj  

Development of Scientific and Methodical Providing for the Assessment of Technical Condition of the Automated Systems of Protection of Stationary Objects on the basis of Statistics of Their Operation

open access: yesБезопасность информационных технологий, 2013
In the article methodical provisions on formation of the basic data providing a full and objective assessment of technical condition of existing ASO, being in operation outside a guaranteed life are considered.
Alexander Emelyanovich Grodetsky   +1 more
doaj  

Ще раз про надійність мікропроцесорних пристроїв релейного захисту

open access: yesElektrotehnìka ta Elektroenergetika, 2011
Стаття є продовженням циклу публікацій автора, присвячених надійності мікропроцесорних пристроїв релейного захисту. Наведені у статті статистичні дані, отримані автором, збігаються з даними інших авторів і підтверджують більш високу надійність ...
V. I. Gurevich
doaj   +1 more source

Failure Rate Estimation in a Dynamic Environment [PDF]

open access: yesEconomic Quality Control, 2015
Abstract We present a method to assess the reliability of a material operating in a dynamic environment. The dynamic environment is represented as a sequence of shocks governed by a self-exciting point process. The time-to-failure of the material is assumed to have a piecewise exponential distribution.
Gouno, Evans, Guérineau, Lise
openaire   +4 more sources

Evaluation of Atmospheric Neutron Failure Rates and Damage Mechanisms of Ultra-high Voltage Thyristor for DC Transmission

open access: yesYuanzineng kexue jishu
As the core of high-voltage direct-current transmission technology, the DC converter valve and its key power device thyristor face a high risk of failure caused by atmospheric neutron when operating in high-altitude areas. The atmospheric neutron failure
PENG Chao1, ZHOU Yang2, CHEN Zhongyuan2, LEI Zhifeng1, MA Teng1, ZHANG Zhangang1, ZHANG Hong1, HE Yujuan1
doaj   +1 more source

A 12-month clinical study comparing four Glass Ionomer Cements for the cementation of orthodontic molar bands

open access: yesAustralasian Orthodontic Journal, 1989
Four different glass ionomer cements were evaluated in vivo as luting agents for orthodontic mohu bands. A sample of 199 patients with full fixed appliances (Begg Light Wire) were monitored over a period of 12 months during active treatment for loose ...
Fricker John P.
doaj   +1 more source

To Burn-In, or Not to Burn-In: That’s the Question

open access: yesAerospace, 2019
In this paper it is shown that the bathtub-curve (BTC) based time-derivative of the failure rate at the initial moment of time can be considered as a suitable criterion of whether burn-in testing (BIT) should or does not have to be conducted.
Ephraim Suhir
doaj   +1 more source

A Sequential MCMC Model for Reliability Evaluation of Offshore Wind Farms Considering Severe Weather Conditions

open access: yesIEEE Access, 2019
The offshore wind farms (OWF) are susceptible to the severe weather, which can cause the increase of component failure rate and has significant influence on the maintenance process and the reliability of wind farms.
Huawei Chao   +5 more
doaj   +1 more source

Photovoltaic Power Plants (PV-PP) Reliability Indicators for Improving Operation and Maintenance Activities. A Case Study of PV-PP Agigea Located in Romania

open access: yesIEEE Access, 2019
The main purpose of this paper is to design a scientific-based probabilistic model based on Markov chains, to calculate reliability indicators, such as mean time between failure (MTBF) and mean time to failure (MTTF) based on probabilities, to compute ...
Simona-Vasilica Oprea   +3 more
doaj   +1 more source

A brief look at data on the reliability of sprinklers used in conventional buildings / Trumpa duomenų apie įprastiniuose pastatuose įrengtų sprinklerių patikimumą apžvalga

open access: yesJournal of Civil Engineering and Management, 2011
Failures of sprinklers to extinguish fires generate a basic need for the assessment and increase of reliability of these crucial safety systems. This in turn creates a demand for input data used for reliability assessment.
Egidijus Rytas Vaidogas   +1 more
doaj   +1 more source

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