Mostrando ítems 1-10 de 267
Production grinding burn detection using acoustic emission and electric power signals
(Abrasives, 1999-12-01) [Artigo]
This work uses a monitoring system based on a PC platform, where the acoustic emission and electric power signals generated during the grinding process are used to investigate superficial burning occurrence in a surface ...
Resolvendo problemas de fluxo de potência ótimo DC através de uma rede de hopfield modificada
(Sba: Controle & Automação Sociedade Brasileira de Automatica, 2004-12-01) [Artigo]
Inúmeras abordagens neurais têm sido propostas na literatura para resolver problemas de Fluxo de Potência Ótimo DC. Mais especificamente, a rede de Hopfield é o modelo de rede mais utilizado nesses tipos de problemas. A ...
Framework for analysis and representation of external systems for online reactive-optimisation studies
(IEE Proceedings: Generation, Transmission and Distribution, 2005-11-01) [Artigo]
The paper proposes a framework for the analysis and representation of external systems for online optimisation studies. The basis for this framework is the equivalent OPF (EOPF), an optimisation model obtained by partitioning ...
Analysis of the application of the minimum quantity lubricant - MQL technique in the grinding process
(Industrial Diamond Review, 2007-01-01) [Artigo]
Grinding of hardened steels using optimized cooling
(Ingeniare, 2008-06-01) [Artigo]
Grinding - the final machining process of a workpiece - requires large amounts of cutting fluids for the lubrication, cooling and removal of chips. These fluids are highly aggressive to the environment. With the technological ...
Tuning of fuzzy inference systems through unconstrained optimization techniques
(Intelligent Engineering Systems Through Artificial Neural Networks, 2003-12-01) [Trabalho apresentado em evento]
This paper presents a new methodology for the adjustment of fuzzy inference systems. A novel approach, which uses unconstrained optimization techniques, is developed in order to adjust the free parameters of the fuzzy ...
An Experimental Study on the Effect of Temperature on Piezoelectric Sensors for Impedance-Based Structural Health Monitoring
(Sensors, 2014-01-01) [Artigo]
The electromechanical impedance (EMI) technique is considered to be one of the most promising methods for developing structural health monitoring (SHM) systems. This technique is simple to implement and uses small and ...
Tool Condition Monitoring of Single-Point Dresser Using Acoustic Emission and Neural Networks Models
(IEEE Transactions on Instrumentation and Measurement, 2014-03-01) [Artigo]
Identification and online monitoring of the dresser wear are necessary to guarantee a desired wheel surface and improve the effectiveness of grinding process to a satisfactory level. However, tool wear is a complex phenomenon ...
In-process grinding monitoring through acoustic emission
(Journal of the Brazilian Society of Mechanical Sciences and Engineering, 2006-01-01) [Artigo]
This work aims to investigate the efficiency of digital signal processing tools of acoustic emission signals in order to detect thermal damages in grinding processes. To accomplish such a goal, an experimental work was ...
Utilization of Minimum Quantity Lubrication (MQL) with Water in CBN Grinding of Steel
(Materials Research-ibero-american Journal of Materials, 2014-01-01) [Artigo]
The use of cutting fluids is fundamental to machining processes, mainly when it comes to high heat generation, which is the case of grinding. Thus, lubrication and cooling provided by cutting fluids improve the final quality ...