Predictive Maintenance
Mostrando 1-12 de 47 artigos, teses e dissertações.
-
1. Dynamic risk calculation model applied to gas compressor
Abstract The present article proposes to apply a Risk-Based Maintenance methodology in a gas compression system. This risk calculation is based on a semi-quantitative mathematical model that uses the interdependence of process variables and predictive maintenance data applied in a Condition-Based Maintenance methodology, in order to obtain the calculation of
REM, Int. Eng. J.. Publicado em: 2020-03
-
2. PHYSICAL ACTIVITY LEVEL AND ENERGY EXPENDITURE ASSESSED BY ACCELEROMETRY IN 60Y+ BRAZILIAN SUBJECTS
RESUMO Objetivo: Avaliar o nível de atividade física (NAF) e o gasto energético total diário (GETD) em uma amostra de idosos (≥ 60 anos) residentes no município de Niterói, Rio de Janeiro, Brasil. Métodos: Uma amostra de conveniência de 88 indivíduos recrutados em programas de atividade física usou acelerômetro na cintura durante sete dias con
Rev Bras Med Esporte. Publicado em: 2019-04
-
3. Surgical Treatment of Atrial Fibrillation in Patients with Rheumatic Valve Disease
Abstract Objective: To assess heart rhythm and predictive factors associated with sinus rhythm after one year in patients with rheumatic valve disease undergoing concomitant surgical treatment of atrial fibrillation. Operative mortality, survival and occurrence of stroke after one year were also evaluated. Methods: Retrospective longitudinal observational
Braz. J. Cardiovasc. Surg.. Publicado em: 2017-06
-
4. Molecular and hematologic relapses in adult patients with acute promyelocytic leukemia: a cohort study
Abstract Objective: To evaluate factors predictive for relapse in a cohort of adult patients with acute promyelocytic leukemia monitored by molecular methods during consolidation and during at least one month of maintenance therapy. Methods: The charts and laboratory data of 65 adult patients with acute promyelocytic leukemia treated according to the Inter
Rev. Bras. Hematol. Hemoter.. Publicado em: 2017-03
-
5. SIMULATION OF THERMAL DECOMPOSITION OF MINERAL INSULATING OIL
Abstract Dissolved gas analysis (DGA) has been applied for decades as the main predictive maintenance technique for diagnosing incipient faults in power transformers since the decomposition of the mineral insulating oil (MIO) produces gases that remain dissolved in the liquid phase. Nevertheless, the most known diagnostic methods are based on findings of sim
Braz. J. Chem. Eng.. Publicado em: 2015-09
-
6. Análise reversa de um modelo de previsão de manutenção em redes de abastecimento de água / Reverse analysis of a model of predictive maintenance of water supply networks
O crescimento populacional e dos centros urbanos torna cada vez mais complexa a infraestrutura urbana, e não deixa de ser diferente a questão das redes e adutoras de abastecimento público de água, que passam a ter grandes extensões e diâmetros, implicando numa complexidade maior da operação e controle e também na maior dificuldade no controle de per
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 18/05/2011
-
7. Efficiency of metabolizable energy utilization for maintenance and gain and evaluation of Small Ruminant Nutrition System model in Santa Ines sheep
This study was carried out to estimate efficiencies of the utilization of metabolizable energy for maintenance (k m) and weight gain (k g) and to evaluate the Small Ruminant Nutrition System (SRNS) model in predicting dry matter intake and average daily gain of growing Santa Ines sheep. Twenty-four non-castrated Santa Ines sheep, at 50 days of age and with a
Revista Brasileira de Zootecnia. Publicado em: 2011-11
-
8. Predictive maintenance of a reducer with contaminated oil under an excentrical load through vibration and oil analysis
Among all Predictive Maintenance techniques the oil analysis and vibration analysis are the most important for monitoring some systems. The integration of these techniques has the potential to revolutionize industrial practices and provide a large economic gain for industries. To study the integration of both techniques a bench test was set up and put to wor
Journal of the Brazilian Society of Mechanical Sciences and Engineering. Publicado em: 2011-03
-
9. Cultivares, variaves de processo, reuso do xarope de sacarose e viabilidade economica da pre-secagem osmotica de pessegoa / Cultivars, process variables, reuse syrup and economicv feasibility of the osmotic pre-driyng of peaches
The objective of the present study was to evaluate the industrialization of peach cultivars from the State of São Paulo, Brazil, in the semi-dried form, using a combined process involving osmotic pre-drying (OPD) and conventional hot air drying (CD). The aptness of the cultivars Douradão, Régis, Aurora-1 and Diamante was evaluated, using OPD with sucrose
Publicado em: 2010
-
10. Modeling techniques and processes control application based on Neural Networks with on-line adjustment using Genetic Algorithms
In this work a strategy is presented for the temperature control of the polymerization reaction of styrene in suspension in batch. A three-layer feed forward Artificial Neural Network was trained in an off-line way starting from a removed group of patterns of the experimental system and applied in the recurrent form (RNN) to a Predictive Controller based on
Brazilian Journal of Chemical Engineering. Publicado em: 2009-03
-
11. REDES NEURAIS NA MANUTENÇÃO PREDITIVA DE CAMINHÕES FORA DE ESTRADA / NEURAL NETWORKS FOR PREDICTIVE MAINTENANCE ON OFF-HIGWAY TRUCKS
With the increasing demand for ore in the world, the complexity, size and price of mining equipment have increased considerably. As these machines have embedded monitoring technology, the use of such data to increase the reliability and availability of the equipment has become essential in order to reduce maintenance costs. The objective of this work is deve
Publicado em: 2009
-
12. PRIORIZAÇÃO DOS MODOS DE FALHA DE EQUIPAMENTOS UTILIZANDO OS MÉTODOS DE ANÁLISE MULTICRITÉRIO PROMETHEE E FUZZY PROMETHEE / PRIORITIZATION OF FAILURE MODES OF EQUIPMENT USING THE METHODS OF MULTICRITERIA ANALYSIS PROMETHE AND FUZZY PROMETHE
Aiming to meet the criteria of availability and reliability required by the rules of the Brazilian electric sector, energy companies have increased the use of systems for monitoring and diagnosis. This allows the identification of prior evidence of abnormalities in the operational condition of substation equipment, enabling the practice of predictive mainten
Publicado em: 2009