Estudios en Mantenimiento (GEMI)

URI permanente para esta comunidad

https://hdl.handle.net/10784/28124

Realiza investigaciones empíricas, experimentales, exploratorias, concluyentes, descriptivas, estadísticas y correlacionales sobre fenómenos directos o asociados a la gestión y operación de mantenimiento industrial, empresarial o comercial en equipos de generación de servicios.

Líneas de investigación: CMD Ingeniería de Mantenimiento en Fábricas (Terotecnología); Ingeniería de Mantenimiento (Diagnostico Técnico); Ingeniería de Mantenimiento de Fábricas; Recursos Humanos y Tácticas de Mantenimiento; Agricultura digital.
Código Minciencias: COL0008325.
Categoría 2019: A.
Escuela: Ingeniería.
Departamento académico: Ingeniería Mecánica.
Coordinadora: Leonel Francisco Castañeda Heredia.
Correo electrónico: lcasta@eafit.edu.co

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Mostrando 1 - 20 de 120

Airline choice model for an international round-trip flight considering outbound and return flight schedules
(Warsaw University of Technology, 2020-01-01) Munoz C.; Laniado H.; Córdoba J.; Universidad EAFIT. Departamento de Ingeniería Mecánica; Estudios en Mantenimiento (GEMI)
This paper quantified the impact of outbound and return flight schedule preferences on airline choice for international trips. Several studies have used airline choice data to identify preferences and trade-offs of different air carrier service attributes, such as travel time, fare and flight schedule. However, estimation of the effect return flight schedules have on airline choice for an international round-trip flight has not yet been studied in detail. Therefore, this study introduces attributes related to return flight characteristics and round-trip flight schedule interaction into the airline choice models, which have not previously been reported in the literature. We developed a stated preference survey that includes round-trip fares based on flight schedule combinations and the number of days prior to departure fares was purchased. We applied modelling techniques using a set of stated preference data. A mixed logit model was tested for the presence of heterogeneity in passengers' preferences. Our results indicated that models with attributes related to return flight and its interaction with outbound flight attributes have a superior fit compared with models only based on attributes reported in the literature review. The model found shows that airfare, travel time, arrival preference schedule in the outward journey, departure preference in the return journey and the schedule combination of round-trip flight are significantly affecting passenger choice behaviour in international round-trip flights. Sensitivity analysis of airline service characteristics and their marketing implications are conducted. The analysis reports seven policies with the greatest impact on each airline choice probabilities. It shows that by reducing travel time and airfare and by adopting an afternoon and night schedule preference for outbound and return flight, respectively, the highest probability on airline choice would be reached. This research contributes to the current literature by enhancing the understanding of how passengers choose airlines, considering both outbound and inbound journey characteristics. Thus, this study provides an analytical tool designed to provide a better understanding of international round-trip flight demand determinants and support carrier decisions. © 2020 Warsaw University of Technology. All rights reserved.
Analysis of driving safety criteria based on national regulations for the suspension systems of NGVS
(Mendel University of Agriculture and Forestry Brno, 2015-01-01) Martinod, R.M.; Betancur, G.R.; Castañeda, L.F.; Universidad EAFIT. Departamento de Ingeniería Mecánica; Estudios en Mantenimiento (GEMI)
The work analyses the technical evaluation process of the suspension system for vehicles that have been adapted to natural-gas-fuelled engines from power light-duty gasoline, and diesel vehicles; this evaluation is done through a mechanical review established by national regulations. The development of this analysis is focused on establishing the relationship between the natural-gas-fuelled equipment and the dynamic effect caused by the extra-weight, according to two measuring criteria that determine the safety and driving comfort, these are: (i) tire-road adhesion index; and (ii) tire excitation phase angle. The paper also proposes new elements that can be added to the current national regulations and that are currently applied to assess the suspension of natural gas vehicles, recorded using a test standard benchmark for the evaluation of the suspension.
Analysis of the procedure for suspension evaluation of civil armoured vehicles: Reliability and safety driving criteria
(Inderscience Enterprises, 2013-01-01) Martinod, R.M.; Betancur, G.R.; Mesa, J.F.; Benavides, O.M.; Castañeda, L.F.; Universidad EAFIT. Departamento de Ingeniería Mecánica; Estudios en Mantenimiento (GEMI)
The present study exposes an analysis of the suspension system technical state evaluation for civil vehicles that have been subject to armouring processes. Such evaluation is performed through a mechanised revision established by state regulation and is based on the method defined by EuSAMA. The development of this analysis focuses on establishing the existing relation between the ballistic resistance integrated to a vehicle and the dynamic effect exercised for the modification of its mass, according to two reliability/safety driving measurement criteria: (i) tyre-road adhesion index and (ii) tyre excitation phase angle. The study proposes new elements to the current procedure established to evaluate the suspension of civil armoured cars considering the two measurement criteria, which can be acquired by a standard commercial suspension tester machine. Copyright © 2013 Inderscience Enterprises Ltd.
Aplicaciones Móviles para la Evaluación de Conductores y Usuarios en Sistemas Estratégicos de Transporte Público
(Fundación Universitaria Antonio de Arévalo, 2019-12-21) Sagbini Daza, Kathy; Ramirez, T.; Castañeda, L.; Toro, M.; Universidad EAFIT. Departamento de Ingeniería Mecánica; Estudios en Mantenimiento (GEMI)
Application of virtual technologies for the representation of physical phenomena in maintenance tasks
(IOP PUBLISHING LTD, 2020-01-01) Dueas Ramírez L.M.; Villegas López G.A.; Chamat Torres C.P.; Universidad EAFIT. Departamento de Ingeniería Mecánica; Estudios en Mantenimiento (GEMI)
Maintenance during industrial development has evolved, always seeking the in-depth study of the physical phenomena that occur in the elements and systems that have suffered functional failures. Maintenance has been adapted to each challenge presented. The progress and development of computer science have opted for the massive use of information and communication technologies that support industrial processes, generating new possibilities in maintenance management and operation. These tools could contribute to improving the efficiency of maintenance processes, taking into account that these costs represent a third of the total production cost in an organization. This work seeks to identify the evolution of these technological tools in the applications that they have had in representing the physical phenomena of maintenance management. This research also seeks to establish the minimum requirements that these tools must consider in their applications and uses. Considering the appropriation of these technologies in Colombia, in order to determine where the country is in terms of development and technological use, being important information for the recognition of the scenario and decision-making that prevail in a competitive Colombian industry world level. © 2020 Published under licence by IOP Publishing Ltd.
Assessment properties of the coherence function on combustion engines technical state
(División de Ingenierías de la Universidad Santo Tomás, 2011-01-01) CASTAÑEDA, LEONEL FRANCISCO; Universidad EAFIT. Departamento de Ingeniería Mecánica; Estudios en Mantenimiento (GEMI)
Automatic detection of number-plate and traffic infractions of motorcyclists by Intelligent Transportation Systems
(IOP PUBLISHING LTD, 2020-01-01) Valencia, J.F.; Ramírez-Guerrero, T.; Castãeda, L.F.; Toro, M.; Universidad EAFIT. Departamento de Ingeniería Mecánica; Estudios en Mantenimiento (GEMI)
Public Transportation Strategic Systems are a digital transformation for the urban transportation service in the Colombian medium-size cities, from 200,000 to 600,000 inhabitants. The implementation of the urban public transportation services has not started in many cities; as a result, this cities in Colombia have an increase of illegal motorcycle taxis, which cause a high number of road accidents. The main method for controlling illegal motorcycle taxis is by giving the drivers transit fines. In order to give such transit fines, transit police have several control points in medium-size cities. In this article, we developed a mobile application to detect three types of transit infractions usually committed by motorcycle taxi drivers. The purpose of this application is to be a tool for the transit police agents to disincentivize the use of motorcycle taxis. The mobile application detects a possible transit infraction, saves the photo, motorcycle plate number, date, and time. Afterwards, the application generates a support for the transit infractions that will be issued by the transit police officer. We performed an experiment using this mobile application in the city of Valledupar, Colombia. The mobile application captured 40 possible transit infractions. © Published under licence by IOP Publishing Ltd.
Bases del diagnóstico técnico de máquinas
(Editorial EAFIT, 2010-01-01) Castaneda, L.; Zótowski, Bogdan; Universidad EAFIT. Departamento de Ingeniería Mecánica; Estudios en Mantenimiento (GEMI)
Este libro presenta los métodos y medios necesarios para la evaluación del estado de las máquinas sin desmontaje, los cuales suministran de manera inmediata la información actual de las máquinas bajo estudio
Bases Del Diagnóstico Técnico De Máquinas
(Editorial EAFIT, 2011-03-01) CASTAÑEDA, LEONEL FRANCISCO; Universidad EAFIT. Departamento de Ingeniería Mecánica; Estudios en Mantenimiento (GEMI)
Campus Bimodal: Experiencia Educativa Que Conjuga La Presencialidad Y La Virtualidad
(Icfes, 2002-01-01) VILLEGAS, GUSTAVO ADOLFO; Mejía, Rubi Consuelo; Universidad EAFIT. Departamento de Ingeniería Mecánica; Estudios en Mantenimiento (GEMI)
Caracterización Del Sector Metalmecánico Y Área De Soldadura
(2012-11-15) Villegas, G.; Universidad EAFIT. Departamento de Ingeniería Mecánica; Estudios en Mantenimiento (GEMI)
¿Cómo lograr pronósticos más acertados? Modelos AR.I.MA Parte 2
(2008-01-01) MORA, LUIS ALBERTO; Universidad EAFIT. Departamento de Ingeniería Mecánica; Estudios en Mantenimiento (GEMI)
¿Cómo lograr pronósticos más acertados? Modelos AR.I.MA. Parte 1
(2008-01-01) MORA, LUIS ALBERTO; Universidad EAFIT. Departamento de Ingeniería Mecánica; Estudios en Mantenimiento (GEMI)
Cómo pronosticar conexactitud la demanda futura de un producto, bien o servicio: Caso real international
(International Institute of Informatics and Systemics, IIIS, 2014-01-01) Alberto Mora, G.; Claves, P.; Universidad EAFIT. Departamento de Ingeniería Mecánica; Estudios en Mantenimiento (GEMI)
[No abstract available]
Computer science development and technologies associated with industry 4.0 applied to industrial maintenance in Colombia
(IOP PUBLISHING LTD, 2020-01-01) Dueas Ramírez, L.M.; Villegas López, G.A.; Universidad EAFIT. Departamento de Ingeniería Mecánica; Estudios en Mantenimiento (GEMI)
The technologies associated with industry 4.0, have taken a leading role worldwide, because being globally competitive in the industrial sector depends not only on the real world but also on the digital world. This is why the predictive techniques used in maintenance and that currently employ technologies such as: internet of things, machine learning, big data, cyber physical Systems, Data analysis among others; to make their predictions they have defined a path in the continuous improvement of industrial processes and in the execution of the maintenance strategy. This work shows the most developed technologies 4.0 in Colombia used in industrial maintenance and exposes the country's gaps in the development of these technologies and their use in different industrial sectors. This research was developed through the analysis of consolidated data in studies conducted by the private sector and the public in Colombia on technological developments in the country where it is evident that these technologies associated with maintenance are in growth stage and in a few sectors of industry have exploited the benefits of use. © Published under licence by IOP Publishing Ltd.
Computer-Aided Support for the Rapid Creation of Parametric Models of Milling Units for Longwall Shearers
(Sciendo, 2018-12-01) Boloz L.; Castañeda L.F.; Universidad EAFIT. Departamento de Ingeniería Mecánica; Estudios en Mantenimiento (GEMI)
The cutting drums are the basic working components of many mining machines. The article focuses on differences in the design of cutting drums depending on the expected working conditions. Then, the unique calculation procedure is presented which allows to determine the load on the unit by reducing the forces acting on a single pick, taking into account the picks bent on the cut-off disc. Until now, this has been omitted in the literature. The results of the calculations for the selected cutting drum performed in MATLAB are also presented. The further section proposes to use Autodesk Inventor Professional's iLogic Tool for quick modelling of cutting drums. The principles of creating parameterized models and compositions using programming elements in the form of iLogic scripts are presented. The articles presented a ready-made units generator, taking into account the possibility to determine values of selected numerical parameters of the unit: diameter, web, number of patches and cutting pitch. The generator also allows you to select the type of pick holders, conical pick types, as well as the choice of pick system for repositioning or matching picks. © 2018 Lukasz Boloz, Leonel F. Castañeda, published by Sciendo 2018.
Computer-Aided Support for the Rapid Creation of Parametric Models of Milling Units for Longwall Shearers
(Sciendo, 2018-08-01) BO£OZ, £ukasz; Castaneda Heredia Leonel F.; Universidad EAFIT. Departamento de Ingeniería Mecánica; Estudios en Mantenimiento (GEMI)
The cutting drums are the basic working components of many mining machines. The article focuses on differencesin the design of cutting drums depending on the expected working conditions.
Conclusiones en torno a la jornada de reflexión sobre la virtualización
(Fondo editorial Universidad EAFIT, 2003-11-13) Villegas, G.; Universidad EAFIT. Departamento de Ingeniería Mecánica; Estudios en Mantenimiento (GEMI)
El confort en vehículos ferroviarios de pasajeros
(Universidad EAFIT, 2006-06-01) CASTAÑEDA, LEONEL FRANCISCO; Betancur, German René; Universidad EAFIT. Departamento de Ingeniería Mecánica; Estudios en Mantenimiento (GEMI)
CORRELATION BETWEEN PROCEDURAL AND CONCEPTUAL TEST IN A STATICS COURSE
(IEEE, 2018-01-01) Restrepo Garcia, Carlos Andres; Barbosa Perez, Jaime Leonardo; Restrepo Ochoa, Jorge Luis; Universidad EAFIT. Departamento de Ingeniería Mecánica; Estudios en Mantenimiento (GEMI)
Due to poor performance in Statics at Eafit University, since 2012 the Mechanical Engineering department implemented a virtual tool for the training and assessment of Statics course. Although the implementation led to better performance in the Statics course, students were still showing lack of comprehension of the basic concepts underlying the subject. The department applied a Concept Inventory test to 195 students from the second semester of 2017 in order to check if there was a correlation between the grades obtained in the class examinations and the performance in a conceptual test of Statics. The Concept Inventory was applied one week before the final examination and it was held inside the University facilities. The students were monitored all the time. For the course examinations were taken only three out of the four partial exams, they were computed and then compared to the results of the concept inventory. The results show that almost all the students with the highest grades in the class performed above the mean in the Concept Inventory. The overall mean for the conceptual test was 9.27 and the standard deviation was 5.28. The course grades were discriminated by career and an Analysis of Variance was conducted to determine if there were significant differences among the groups. A correlation analysis suggests that there is not a strong correlation between the course grades and the concept inventory results. One possible explanation for this can be due to the fact that the regular teaching method for these kind of basic courses in engineering in the University is merely procedural and problem-solving oriented, conceptual approaches are often neglected in both teaching and assessment.

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