Results 31 to 40 of about 39,799 (70)

Operation of Circuit Breakers: Data and Analysis

Multidisciplinary Journal for Education, Social and Technological Sciences, 2021
An attempt has been made for the analysis on Circuit breakers (CBs) this paper. First, the types and arcing phenomenon of Oil and SF6 Circuit breakers were briefly discussed.
Victory C. Madueme, M. J. Mbunwe, Theophilus C. Madueme, Mohammad Ayaz Ahmad, Cornelia V. Anghel Drugarin   +4 more
doaj   +1 more source

Reliability Analysis of Vital Computer in Railway

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

Безопасность 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, Vladimir Leonovich Yevseyev   +1 more
doaj  

Survival and Failure Rates of Lithium Disilicate Veneers: A Systematic Review [PDF]

International Journal of Prosthodontics and Restorative Dentistry
Purpose: The purpose of the present systematic review was to assess the clinical survival and failure rates of lithium disilicate (LDS) veneers in the anterior region.
Vidulasri N, Ashok Leburu, Madhuram K, Naveen Kumar V   +3 more
doaj   +1 more source

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

Yuanzineng 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

Australasian 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

Ще раз про надійність мікропроцесорних пристроїв релейного захисту

Elektrotehnìka 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

Analysis of the impact of the FMEA method on reducing failure rate and increasing the reliability of SCP pumps [PDF]

Tehnika
This paper analyzes the impact of implementing preventive maintenance procedures based on the FMEA (Failure Modes and Effects Analysis) method on the failure rate and reliability of split-case centrifugal pumps (SCP pumps).
Lakatuš Peko S., Radovanović Ljiljana Z., Prvulović Slavica S., Desnica Eleonora Z.   +3 more
doaj   +1 more source

METHODOLOGY OF DETERMINING THE PARAMETERS OF TRACTION ELECTRIC MOTOR FAILURES WHEN OPERATING TROLLEYBUSES

Nauka ta progres transportu, 2018
Purpose. The work is aimed to study the change in parameters of traction electric motors of trolleybuses during operation and improvement of the technical state control system, using modern diagnostic methods. Methodology.
Т. P. Pavlenko, V. M. Shavkun, V. I. Scurihin, N. P. Lukashova   +3 more
doaj   +1 more source

Possibilities of realization of the failure analysis method for machines

Vojnotehnički Glasnik, 2001
In this paper, on the basis of the known methods of failure analysis developed primarily for electronic devices FMEA and FMECA, the possibility of their application on a complex machine conditioned the development of an 'adjusted' method of the working ...
Petar Gardijan
doaj   +1 more source