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Advantages of learning factories for production planning based on shop floor simulation: A step towards smart factories in industry 4.0
(Institute of Electrical and Electronics Engineers Inc., 2019-01-01) Andres M.; Alvaro G.; Julian M.; Universidad EAFIT. Departamento de Ingeniería de Producción; Tecnologías para la Producción
In future industry, defined as Industry 4.0, production planning and control strategies will be executed by human beings backed by computational tools for decision making; One of these tools is shop floor simulation, and a natural scenario to learn about how to use it for productive processes design and control are the Learning Factories. In this paper, shop floor simulation is identified as a tool for planning and controlling production, also a state of the art about its implementation is exposed in academic and industrial environments. In addition, the trends in the construction of the Learning Factories are shown, and some aspects about how they can be used for shop floor simulation. This work also proposes the realization of a digital model in EAFIT University Learning Factory as a first step towards digital learning factory. © 2019 IEEE.
Aplicación del Marco de Fundamentación del Project Management Institute (PMI) para la Asignatura Proyecto de Elementos de Máquinas y Equipos
(Latin American and Caribbean Consortium of Engineering Institutions, 2016-07-22) Cartagena Echeverry, C.; Carlos A. LÓPEZ Cañas; Montoya, Jorge Esteban; Alzate, Andres; Universidad EAFIT. Departamento de Ingeniería de Producción; Tecnologías para la Producción
La industria manufacturera colombiana necesita de una guía estructurada, en la que el diseño en ingeniería se interrelacione constantemente con la teoría administrativa a través de todo el ciclo de vida de fabricación de equipos, garantizando que un proye
Application Design Methodology for Building a Device Foil Incremental Deformation by Double Point Method Dieless-DPIF
(Institute of Electrical and Electronics Engineers Inc., 2014-01-01) Bermudez, G.P.; Garcia, J.A.; Lozano, A.B.; Universidad EAFIT. Departamento de Ingeniería de Producción; Tecnologías para la Producción
The new manufacturing technologies of the world are increasingly demanding the design and redesign of new alternative products and processes that can be useful and low cost term. The alternative solution and methodology to innovate in manufacturing processes of incremental sheet metal forming is shown in this paper. Through the methodology Product design specification (PDS) as a practical and effective solution, describes the design step, specific requirements, materials and building process to achieve a device's architecture for a sheet metal deformation by two-point method Die less - DPIF. The selection, simplification and functionality becomes a fundamental objective for design engineers. © 2014 IEEE.
Application of product line commonality index (PCI) in a family of products
(TRANS TECH PUBLICATIONS LTD, 2014-01-01) Oliver Rubio, M.; Julian Mora, O.; Alvaro Guarin, G.; Pablo Carrizosa, I.; Universidad EAFIT. Departamento de Ingeniería de Producción; Tecnologías para la Producción
Currently many companies base their marketing strategy around a family of products. Thus, they regularly add new variations to products in order to meet changing market needs, or to attract new customers. Although the basic functionality remains unchanged across products, new features, aesthetic appearance and technologies are incorporated in each new product. This if it is not checked, can generate the "complexity of the product," which leads to a loss of productivity or quality. Thus, the effective management of product variations in design and manufacturing is challenging. The key is minimizing the non-value added variations through models within a range of options without limiting customers. This article discusses the factors that contribute to the "complexity of the product" and this is done through the product line commonality index (PCI) [1], which measures the level of common parts in a product family. A case study of bicycle frame displays its implementation and functionality. The index shows the possibility that the products in a family share parts effectively (modularity) and reduces the total number of parts (multifunctionality). © (2014) Trans Tech Publications, Switzerland.
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.
Assessing interactions among students geographically disperse during multinational design projects
(AMER SOC ENGINEERING EDUCATION, 2014-01-01) Esparragoza, Ivan E.; Lascano Farak, Sheila Katherine; Ocampo, Jared Roberto; Vigano, Roberto; Duque-Rivera Duque-Rivera, Jorge W.; Rodriguez, Carlos A.; Universidad EAFIT. Departamento de Ingeniería de Producción; Tecnologías para la Producción
The new business model and global operations of many enterprises have brought new challenges for engineers working in multinational companies. These new trends and the need of educating world-class engineers with global competencies have opened opportunities for new educational models to expose students to international experiences to start developing those capabilities. One pedagogical activity used to promote global competencies is the participation of students in multinational design projects, which is a problem-based learning approach in an international setting, where students get immersed in the solution of an engineering design task while they work in teams and collaborate with international partners. Consequently, a collaborative network of institutions from the Americas and Italy has developed and executed collaborative multinational design projects as part of academic experiences for their students. The main goal of these projects is to foster international collaboration and to offer an opportunity to the students to develop professional skills through international teamwork effort in the solution of a design problem. However, a real challenge of this practice has been to create an effective interaction among the students participating in this type of projects and to maintain the flow of information, and student engagement in the project and in their learning. Therefore, this paper reports the work related to an assessment approach used to monitor students' interaction in multinational collaborative projects. The main objectives of the proposed assessment tool are: (a) to evaluate the interaction among the students (frequency, quantity and quality); (b) to determine the value of social interaction in the flow of the interaction; (c) to determine the impact of interaction in the development of the project.
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.
Barriers and success factors in lean construction implementation-survey in pilot context
(Lean Construction, 2015-07-31) Cano, Sandra; Botero- B, Luis-F; Delgado, Jonathan; RUBIANO, OSCAR; Universidad EAFIT. Departamento de Ingeniería Civil; Gestión de la Construcción
The study identifies a set of barriers and critical success factors (CSF) involved in the implementation of Lean Construction (LC) through three phases: Literature's Collection, with analysis and obtained information processing
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.
Correlation between procedural and conceptual test in a statics course
(Institute of Electrical and Electronics Engineers Inc., 2019-01-01) Garcia C.A.R.; Perez J.L.B.; Ochoa J.L.R.; 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. © 2018 IEEE.
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.
Creativity and job tension in experiential learning
(IEEE, 2018-01-01) Pablo Roman-Calderon, Juan; Esteban Acevedo-Jaramillo, Manuel; Esteban Escalante, Juan; Arias, Alejandro; Aguilar-Barrientos, Sara; Barbosa, Jaime; Universidad EAFIT. Departamento de Ingeniería Mecánica; Estudios en Mantenimiento (GEMI)
This work-in-progress research paper presents a study on employability skills. Employability or soft skills refer to personality traits, attitudes and behavior that are complementary to professional knowledge. These skills are part of a series of competencies that are intertwined with the engineer's technical work [1]. A high percentage of job success depends on employability skills [2]. A gap exists between the attributes of engineering graduates and company requirements [3]. Experiential learning can develop a myriad of skills required by the workplace. Universidad EAFIT, located in Medellin (Colombia), has developed an experiential learning program called KRATOS. KRATOS was sent an invitation to participate in an international competition that implied designing and building a solar/ electric powered vehicle. Think creatively is a competency that is important for engineering practice across areas, disciplines and countries [1]. Although student competitions that include design activities may enhance a passion for engineering, they can also have negative emotional consequences [4] (i.e. job tension). Using the structural equation modeling technique, the authors of this study analyzed the responses of 334 undergraduate students. The results of the study indicate that job tension significantly decreased over time, whereas no significant change was detected in terms of creativity.
Creativity and job tension in experiential learning
(Institute of Electrical and Electronics Engineers Inc., 2019-01-01) Roman-Calderon J.P.; Acevedo-Jaramillo M.E.; Escalante J.E.; Arias A.; Aguilar-Barrientos S.; Barbosa J.; Universidad EAFIT. Departamento de Ingeniería Mecánica; Estudios en Mantenimiento (GEMI)
This work-in-progress research paper presents a study on employability skills. Employability or soft skills refer to personality traits, attitudes and behavior that are complementary to professional knowledge. These skills are part of a series of competencies that are intertwined with the engineer's technical work [1]. A high percentage of job success depends on employability skills [2]. A gap exists between the attributes of engineering graduates and company requirements [3]. Experiential learning can develop a myriad of skills required by the workplace. Universidad EAFIT, located in Medellin (Colombia), has developed an experiential learning program called KRATOS. KRATOS was sent an invitation to participate in an international competition that implied designing and building a solar/electric powered vehicle. Think creatively is a competency that is important for engineering practice across areas, disciplines and countries [1]. Although student competitions that include design activities may enhance a passion for engineering, they can also have negative emotional consequences [4] (i.e. job tension). Using the structural equation modeling technique, the authors of this study analyzed the responses of 334 undergraduate students. The results of the study indicate that job tension significantly decreased over time, whereas no significant change was detected in terms of creativity. © 2018 IEEE.
Developing an experimental case in aluminium foils 1100 to determine the maximum angle of formability in a piece by Dieless-SPIF process
(IOP PUBLISHING LTD, 2014-01-01) Gabriel, Paramo; Adrian, Benitez; Universidad EAFIT. Departamento de Ingeniería de Producción; Tecnologías para la Producción
Incremental sheet forming by the method of single point incremental forming Dieless-SPIF, is a widely studied process, experimented and developed in countries with high manufacturing technologies, with friendly costs when the productive configuration in a productivity system is based in small production batches. United states, United kingdom and France lead this type of studies and cases, developing various proof with experimental geometries, different from the national environment such as Colombia, Bolivia, Chile, Ecuador and Peru where this process where discretely studied. Previously mentioned, it pretends develop an experimental case of a particular geometry, identifying the maximum formability angle of material permissible for the forming of a piece in one pass, the analysis of forming limit curve (FLC), with the objective to emphasizes in this innovative method based in CAD-CAM technologies, compare with other analogous process of deformation sheet metal like embossing, take correct decisions about the viability and applicability of this process (Dieless) in a particular industrial piece, which responses to the necessities of productive configurations mentioned and be highly taken like a manufacturing alternative to the other conventional process of forming sheet metal like embossing, for systems with slow batches production. © Published under licence by IOP Publishing Ltd.
DEVELOPMENT OF AN AUTOMATIC PLOTTER FOR GENERATING EXERCISES FOR STATICS COURSE IN ENGINEERING
(IATED-INT ASSOC TECHNOLOGY EDUCATION A& DEVELOPMENT, 2016-01-01) Restrepo Ochoa, Jorge Luis; Barbosa Perez, Jaime Leonardo; Arenas Berrio, Julian; Universidad EAFIT. Departamento de Ingeniería Mecánica; Estudios en Mantenimiento (GEMI)
In the virtual platform for Statics course of Engineering School at EAFIT University it was implemented an automatic plotter for generating exercises to study truss type structures and beams in civil, mechanical and production engineering. Through graphics changes, range of variables and requested questions, the student is provided with different exercises each time that they log in to the platform, achieving the personalization in the learning and evaluation process. The plotters for the structures are developed in JAVA language, and the questions generated are converted into a compatible format with the management learning system MOODLE. Since 2012, the engineering students' population who have enrolled the Statics course is 1909 and all of them have solved exercises generated with automatic plotters. From the design of an automatic generator an unlimited questions bank is obtained to implement in the virtual platform, it allows to get security when applying evaluation tests due to the fact that each person solves a different question. The present study shows the design and programming methodology used to make plotters so it can be extended to others virtual environments in basic sciences. Future works consists in making automatic generators that allow to define difficulty levels to guide the students in a progressive study in the course topics.
Diseño y fabricación de máquinas con enfoque PLM: Caso de estudio máquinas de mecanizado CNC en la facultad de ingeniería.
(Latin American and Caribbean Consortium of Engineering Institutions, 2016-07-22) Cartagena Echeverry, C.; Rodríguez, Carlos; Montoya, Jorge; Alzate, Andres; Universidad EAFIT. Departamento de Ingeniería de Producción; Tecnologías para la Producción
El reto de diseñar y construir maquinaria que se ajuste a los procesos productivos dentro de las organizaciones es un desafío que deben asumir de manera continua las áreas de ingeniería
Distance interaction in education processes using a Telepresence tool
(SPRINGER-VERLAG BERLIN, 2010-01-01) Giraldo, F.; Jiménez, A.; Trefftz, H.; Restrepo, J.; Esteban, P.; Universidad EAFIT. Departamento de Ingeniería Mecánica; Estudios en Mantenimiento (GEMI)
Distance interaction among educational communities is becoming increasingly important. Courses and talks are shared among institutions and individuals who are located in different places. The Telepresence tool, developed by Eafit and Universidad del Quindío, permits course sharing among the institutions. Instructors from one institution can teach students of the other one, thereby sharing the positive features of each course. In this paper, we present the recent improvements of the Telepresence tool. We also report on the use of the tool in a Multi-Variable Calculus course, designed in accordance to the Teaching for Understanding (TFU) pedagogical framework. © 2010 Springer Science+Business Media B.V.
Dynamic measurements on a Kaplan turbine: Model - Prototype comparison
(Institute of Physics Publishing, 2019-01-01) Angulo M.; Lucino C.; Botero F.; Rivetti A.; Liscia S.; Universidad EAFIT. Departamento de Ingeniería Mecánica; Estudios en Mantenimiento (GEMI)
The purpose of this paper is to validate in prototype, the results related to the description of dynamic behaviour obtained in a Kaplan turbine model. A comparative analysis between model and prototype measurement at homologous operation conditions is presented. The phenomena of interest are tip vortex cavitation development and rotor stator interaction (rsi), associated to operation at high power outputs. The selection of suitable signal processing tools allows a clear identification of the role played by the modulation of the main rsi frequencies on cavitation phenomena. The comparison between pressure acceleration measurements on model and prototype at draft tube wall are consistent, both in time and frequency domain analysis. The acceleration measurement at the draft tube wall (manhole) is suggested as a trustworthy dynamic indicator for prediction (model) and monitoring (prototype) purposes. © 2019 Published under licence by IOP Publishing Ltd.
Efecto de un sistema de evaluación de ambiente virtual sobre el rendimiento académico en un curso de Estática en ingeniería
(Latin American and Caribbean Consortium of Engineering Institutions, 2018-01-01) Pérez J.L.B.; Ochoa J.L.R.; Cadavid A.R.; Calderon J.P.R.; Garcia C.A.R.; Universidad EAFIT. Departamento de Ingeniería Mecánica; Estudios en Mantenimiento (GEMI)
The engineering department of EAFIT University have developed and implemented an evaluation and training virtual system directed to the engineering students that take the Statics course. The system allows the students of several engineering programs to execute different exercises about specific topics included in the syllabus. The system also allows assessing the students' knowledge through weekly quizzes. With the implementation of the evaluation system, the engineering department aimed at improving the academic performance and the learning process of the students. This paper presents the results of a structural equation modeling analysis. The variables included in the analysis were; time of use of the system, results in quizzes and midterm exams grades assigned by the lecturers. The purpose of the analyses was to test the effect of time of use of the system and grades in the quizzes on academic performance represented by midterm grades (paper-based format). The analysis was performed with the data obtained from both, the virtual system and the course grades during year 2014. The findings suggest that both the time of use of the virtual system and good results in the quizzes have a positive influence on the midterm exams results. Therefore, it is concluded that the use of the virtual evaluation system has a positive effect on the students' academic performance. © 2018 Latin American and Caribbean Consortium of Engineering Institutions. All rights reserved.

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