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Dorantes P.N.M.,COMIMSA Corporacion Mexicana de Investigacion en Materiales SA de CV | Gonzalez J.P.N.,COMIMSA Corporacion Mexicana de Investigacion en Materiales SA de CV | Mendez G.M.,Technological Institute of Nuevo Leon
IEEE Latin America Transactions | Year: 2014

This paper presents a novel methodology to model fuzzy logic systems used as fault detection systems. This method is based in a hybrid model assembled via Individual Base Inference (IBI), Statistical Process Control (SPC) tool in the form of Control Charts (CC) and MacVicar-Whelan Methodologies. The novel method provides a simplification of the necessary calculus of inference engine module with the approaches SPC tool (CC: X-S and X-R). The inference engine is assembled via a novel methodology based in the concepts used to create CC and can be made with the specification for R charts or X-S charts. This methodology consists in the hybridization of Macvicar-Whelan method for the assignation of fuzzy labels to provide rules. The IBI is created with the wide spread of real historical data. This data forms the Universe of Discourse (UOD) and the SPC tool is used to provide the fuzzy rules and rule reduction. The aim of this paper is to test the novel method and to compare it with a classic method to prove that this method is an efficient form to rule deduction without lost reliability in the output approximation. The proposed method was tested in an electrical power system. © 2012 IEEE. Source


Alvarez-Vera M.,COMIMSA Corporacion Mexicana de Investigacion en Materiales SA de CV | Hernandez-Rodriguez A.,COMIMSA Corporacion Mexicana de Investigacion en Materiales SA de CV | Hernandez-Rodriguez M.A.L.,Autonomous University of Nuevo Leon | Juarez Hernandez A.,Autonomous University of Nuevo Leon | And 2 more authors.
Metalurgija | Year: 2016

Microstructural morphology of CoCrMo alloy by control of the cooling rate during the solidification was investigated. Samples were obtained using both an induction furnace for slow cooling rate and electric arc furnace for fast cooling rate. Microstructural characterizations were performed with metallographic techniques. It was found that the difference between the formation temperature of hard secondary phases of M23C6-type carbides determine the reduction of carbide size by increasing the cooling rate. © 2016, Faculty of Metallurgy. All rights reserved. Source

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