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An academic design methodology for electrical mobility products - from necessity to functional prototype
(2011-09-09) Osorio Gómez, Gilberto; Mejía Gutiérrez, Ricardo; Sierra Zuluaga, Luis Fernando; Universidad EAFIT. Departamento de Ingeniería de Diseño; Luis Fernando Sierra (lsierraz@eafit.edu.co); Ricardo Mejia (rmejiag@eafit.edu.co); Gilberto Osorio (gosoriog@eafit.edu.co); Ingeniería de Diseño - GRID
The undergraduate program in Product Design Engineering at EAFIT University-Colombia, includes an applied project course during eight semesters with different topics -- Students attend their last project course in seventh and eighth semester integrated into one year topic -- In this project, they have to design a new high-tech consumer product in electrical mobility for different types of transportation need and to construct a completely functional prototype -- The objectives of these courses are to focus on the triad of “Product-User-Context” as well as to foster design, engineering, manufacturing, management and entrepreneurship skills -- In order to offer a systematic way of working, and to obtain better results, a systematic design methodology has been adopted, adapted and applied during the whole product development process in order to facilitate representation, analysis, calculation, management and control of the information related to the product -- The methodology is broadly explained through activities, tools, information and results related to four main stages: 1) Need research & problem statement, 2) Conceptual design, 3) Detailed design and 4) Prototype construction & testing -- A successful case study is presented following all the stages of the presented methodology for the development of an Electric Power-Assisted Bicycle
Academic synergy through integrated mechatronic projects
(Institute of Electrical and Electronics Engineers Inc., 2019-01-01) Velasquez-Lopez A.; Rodriguez-Garcia A.
This Innovative to Practice Work in Progress paper presents an approach to obtain synergy by implementing an integrated mechatronic project within a postgraduate program. Mechatronics has been a reference for synergetic integration of technology. However, synergy is obtained not only from technical issues, but through professional skills. Nevertheless, traditional education and industry standards focus only on the technical side. The study case is performed within the program Integrated Design of Technical Systems by implementing strategies such as integrated scheduling, integrated assessment and project proposal with application fields such as agriculture, robotics, health and mobility. This approach does not require additional credits for a project course, since the project lies underneath the courses. It has led to an increase of enrollment of students, which is significant during times when less engineers opt for further technical education. © 2018 IEEE.
Academic synergy through integrated mechatronic projects
(IEEE, 2018-01-01) Velasquez-Lopez, Alejandro; Rodriguez-Garcia, Alberto
This Innovative to Practice Work in Progress paper presents an approach to obtain synergy by implementing an integrated mechatronic project within a postgraduate program. Mechatronics has been a reference for synergetic integration of technology. However, synergy is obtained not only from technical issues, but through professional skills. Nevertheless, traditional education and industry standards focus only on the technical side. The study case is performed within the program Integrated Design of Technical Systems by implementing strategies such as integrated scheduling, integrated assessment and project proposal with application fields such as agriculture, robotics, health and mobility. This approach does not require additional credits for a project course, since the project lies underneath the courses. It has led to an increase of enrollment of students, which is significant during times when less engineers opt for further technical education.
Action research as the basis to implement enterprise integration engineering and business process management
(Hermes Science, 2005) Molina, Arturo; Canché, Luis; Rosas, Roberto; Camacho, Ricardo; Mejía Gutiérrez, Ricardo; Ocampo, Manuel A.; Universidad EAFIT. Departamento de Ingeniería de Diseño; Ricardo Mejia (rmejiag@eafit.edu.co); Luis Canche (luis.canche@itesm.mx); Arturo Molina ( armolina@itesm.mx); Ingeniería de Diseño - GRID
This paper describes how Action Research (AR) provides a methodology to integrate Business Process Management (BPM) and Enterprise Integration Engineering (EIE) -- The elements of EIE and BPM are aligned to the different stages of AR methodology to achieve a knowledge evolutional cycle to manage change within the enterprise -- The methodology is leveraged by a reference framework which helps to define strategies, evaluate performance measures, design/re-design processes and establish the enabling tools and technologies -- This methodology allows to achieve the integration of enterprise modeling and business processes to create an enterprise model, a formal structure to generate business knowledge and define a platform to achieve the interoperability between processes
Advances and trends of head-up and head-down display systems in automobiles
(SPIE-INT SOC OPTICAL ENGINEERING, 2014-01-01) Alejandro Betancur, J.; Osorio-Gomez, Gilberto; Externo - Escuela - Ingeniería
Currently, in the automotive industry the interaction between drivers and Augmented Reality (AR) systems is a subject of analysis, especially the identification of advantages and risks that this kind of interaction represents. Consequently, this paper attempts to put in evidence the potential applications of Head-Up (Display (HUD) and Head-Down Display (HDD) systems in automotive vehicles, showing applications and trends under study. In general, automotive advances related to AR devices suggest the partial integration of the HUD and HDD in automobiles; however, the right way to do it is still a moot point. © 2014 SPIE.
Aerodynamic effects of manufacturing tolerances on a solar car
(Springer Science and Business Media Deutschland GmbH, 2017-01-01) Betancur, E.; Fragassa, C.; Coy, J.; Hincapie, S.; Osorio-Gómez, G.
In the case of solar vehicles, since the primary necessity is to optimise the energy efficiency during motion, many efforts are addressed by designers in searching the perfect aerodynamics. It means, in particular, the minimization of the drag force at cruising speeds and an elaborated vehicle’s Computer-Aided Design (CAD) are the principal result of this activity. Despite, these efforts can be nullified by geometrical tolerances emerging from manufacturing. In this paper, the effects of tolerances introduced by composite manufacturing processes are investigated combining 3D scanning technology and Computational Fluid Dynamics (CFD). After the solar car manufacturing, a reverse engineering process is executed with the aim to scan the vehicle’s body and compare it to the initial theoretical design. Geometric deviations are found and their aerodynamic consequences are evaluated in terms of aerodynamic losses. © Springer International Publishing AG 2017.
The Aesthetic Pleasure in Design Scale for Spanish Speaking Countries: A Method for the Cross-Cultural Implementation and Adaptation of Psychometric Scales
(SPRINGER, 2019-01-01) Garrido-Possauner L.M.; Maya J.
One of the main issues in the field of product aesthetics is the lack of consistency in the instruments and terms being used to assess it. Several scales have been used but with restricted validity and reliability; notwithstanding, the APID (Aesthetic Pleasure In Design) scale developed in English, as part of the UMA (Unified Model of Aesthetics) project, lacks these limitations. Our research, being in a Spanish speaking country, required the scale to be in Spanish to be comprised and applied to domestic respondents. The adaptation of psychometric instruments with conceptual and linguistic challenging constructs, often is difficult, as the items used to assess the construct do not always have a direct translation. Also, it is possible for the adapted version to require different items that were not considered in the original instrument in order to preserve the content’s equivalence according to the target culture. A qualitative-quantitative mixed approach is proposed in order to overcome these issues. The resulting instrument has been statistically tested, proving to be both valid and reliable for the measurement of aesthetic pleasure in design. The final scale consists of five items: bonito, hermoso, agradable, llamativo and me gusta. This paper aims to improve the understanding of how aesthetic pleasure is perceived and therefore expressed by the local respondents gaining insight into how this construct is mentally represented and categorized by the respondents. It also aims to illustrate how psychometric scales based on respondents’ vocabulary have a great potential as usability assessment instruments. © 2019, Springer Nature Switzerland AG.
Analysis of relevant variables to monitor a photovoltaic charging station through the Function to Data Matrix (FDM) method
(Institution of Engineering and Technology, 2018-01-01) Cárdenas-Gómez I.; Fernández-Montoya M.; Mejía-Gutiérrez R.
The growth of the electric vehicle industry has brought the development of charging stations and the need for good performance of such systems. The large amount of information that can be monitored in these systems can represent a problem for a good operation in terms of control, computational cost and time. For this reason, it is necessary to make a selection of variables that allows to decrease the data-set’s size without compromising the quality of information, needed for a proper information management system. There are several methods for prioritizing variables, such as the Function to Data Matrix (FDM). This method takes into account the functional analysis of the system, as well as the operative states and their relationship with the basic functions and variables. This enables to obtain a Variable Relevance Indicator (VRI) to define which variables have a higher importance under a particular perspective based on the main function of a system. This article presents the process of analyzing a photovoltaic charging station through the FDM method in order to define the most relevant information to be deployed in a future remote monitoring system. © 2018 Institution of Engineering and Technology. All rights reserved.
An applied academic methodology for design and development of sustainable transport solutions
(2011-07-06) Osorio Gómez, Gilberto; Mejía Gutiérrez, Ricardo; Universidad EAFIT. Departamento de Ingeniería de Diseño; Ricardo Mejia (rmejiag@eafit.edu.co); Gilberto Osorio (gosoriog@eafit.edu.co); Ingeniería de Diseño - GRID
Functional physical prototyping, in academic projects, has demonstrated to be an excellent way to validate and evaluate new ideas according to practical experience at the Product Design Engineering Department from EAFIT University located in Colombia -- This practical approach is very efficient in product design and development process learning, rather than only theoretical courses -- Teams of students, of product engineering design, are faced to the challenge of designing innovative new products, according to identified real needs, always taking into account the user and the context -- In order to take this process to a new level, it has been decided to integrate different challenges into a novel scheme to design value added products, specifically in the design area of innovative electric vehicles -- This kind of projects represents a great opportunity from social, economical, technical and environmental interests in Colombia, as electric vehicles became a main interest of several companies and local authorities -- It is worth noticed that Colombia is a developing country with a large amount of clean energy, as almost 80% of produced energy at national level comes from hydropower, being a good scenario to observe the real impact of zero-emission characteristics of the electric vehicles -- A successful academic case study for the development of the functional prototype of a small cargo vehicle for indoor applications is presented in order to show the experiences obtained with this kind of initiatives
Assembly sequences definition through hierarchical subassembly approach
(DELFT UNIV TECHNOLOGY, FAC INDUST DESIGN ENG, 2010-01-01) Gómez, G.O.; Viganò, R.
Design processes are leading to the reduction of product development time and costs. This trend applies to the evaluation of function, architecture and high level information as far as possible at early stages of product design in order to allow the designer to compare radically different solutions rather than proceeding with fine tuning of a single option. Specifically, design of assembly processes requires information regarding neighborhood, interfaces and interactions between product components from product architecture definition stage, difficult to reach at early stages of design. Besides, assembly process concerns human interaction which is considered in a subjective way when it is analyzed as a design parameter, enterprise-specific conditions, and many suppositions derived from queries of skilled staff. So, an automated tool working with general abstract information available at early stages of design could be able to present more realistic behavior against methodologies with specific hypotheses and rules. In this work an automated method to find feasible assembly sequences without human intervention, in contrast with several solutions presented by different authors, is proposed. The developed method starts with the acquisition and evaluation of topological information of interaction between components of a discrete mechanical product at the early stages of concept and embodiment design [16], followed by the identification and hierarchical classification of independent minimum level subassemblies until the completion of the assembly procedure of the system obtaining at least one feasible assembly sequence. In this way an automated tool which yields a finite discrete number of feasible assembly sequences from all possible assembly solutions, is presented. © Organizing Committee of TMCE 2010 Symposium.
ASSESSING LINE, PROPORTION, PRECISION AND PERSPECTIVE IN TRADITIONAL DRAWING METHOD AND DIGITAL PEN BASED TECHNOLOGY FOR FAMILIARIZED SUBJECT
(2016-11-14) Garcia, J.A.
This USB Flash drive includes all presented papers at ICERI2016 conference. It has been formatted similarly to the conference Web site in order to keep a familiar environment and to provide access to the papers trough your default Web browser (open the
ASSESSING LINE, PROPORTION, PRECISION AND PERSPECTIVE IN TRADITIONAL DRAWING METHOD AND DIGITAL PEN BASED TECHNOLOGY FOR FAMILIARIZED SUBJECTS
(IATED-INT ASSOC TECHNOLOGY EDUCATION A& DEVELOPMENT, 2016-01-01) Rincon Gomez, Ana Maria; Garcia Florez, Juan Alejandro; Fernanda Suescum, Maria; Fernando Sierra, Luis; Maya, Jorge
Digital tablets for freehand drawing do not necessarily improve the quality of graphical representations in design students. A digital drawing classroom with 20 Wacom Cintiq digital drawing tablets was implemented in the Product Design Engineering Undergraduate Program at EAFIT University. One of the purposes of this classroom was to improve the students' sketching skills, due to the lack of ability that was been detected by the drawing teachers throughout the Program. Digital freehand drawing software promise several advantages to achieve high quality sketches, nevertheless, a year and a half after this technology was in use, significant improvements in drawing skills were not seen, despite the students' training with the digital tablets and their software. Many of them preferred to continue using pencil and paper rather than digital drawing tablets because, they argued, that they had better results with the traditional method. According to this, a qualitative study was made to try to assess these problems, by comparing freehand drawing with traditional pencil and paper (analog) against digital drawing tablets. Four main variables fundamental for a correct drawing in product design were assessed: line, proportion, precision and perspective. The nine studied subjects were chosen following these criteria: medium-high drawing grades, and at least six months of experience in digital drawing with tablets. Results obtained show the students unsure about the use of digital tablets, and it's evident in drawing quality obtained in both methods, when traditional drawing shows better scores. Students still prefer to draw using pencil and paper and then, to use the drawing tablets for detailing, colouring and finishing their sketches. The students recognize though the importance of adopting new technologies in their design process.
Augmented reality application for product concepts evaluation
(ELSEVIER SCIENCE BV, 2013-01-01) Arbelaez-Estrada, Juan C.; Osorio-Gomez, Gilberto
The decision-making activities through all the design process are crucial for the final product success but currently there are limited computational tools available to provide better support to the designer especially at the earlier stages of the process. In addition the cost of fixing errors or making changes to a design escalates dramatically as the design advances in the product lifecycle. Besides, these activities, in a global design scenario, occur in different time and places, leading to a flexible and light solution that needs to be available for different users. Here is proposed an Augmented Reality (AR) application for Android mobile devices for getting feedback, via internet of a target user, in order to enhance the evaluation of aesthetical response in the conceptual design of discrete products. © 2013 The Authors. Published by Elsevier B.V.
An augmented reality tool to validate the assembly sequence of a discrete product
(Inderscience Enterprises Ltd., 2016-01-01) Osorio-Gómez, G.; Viganò, R.; Arbeláez, J.C.
The need for more flexible tools and reduction of time and cost has led to the implementation of augmented reality (AR) and virtual reality (VR) techniques in the product design and development process. Those techniques have already been used in the conceptual, manufacturing and assembly stages of product design instead of or in extension of the physical prototypes. Such virtual applications have demonstrated superior performance in assembly process design and evaluation of activities that present information about different assembly states in real time, thanks to their flexibility in manipulating and creating new working scenarios. Here, the development of an AR application, called PoliART, aimed at the visual evaluation of assembly sequences at early stages of design is presented. At an industrial level this allows collaborative work between designers and manufacturing engineers from the very beginning in order to consider assembly devices, times and resources, with a short implementation time and reduced costs. © 2016 Inderscience Enterprises Ltd.
The Aware User Experience Model, Its Method of Construction and Derived Heuristics
(SPRINGER, 2020-01-01) Maya J.; Ariza N.
Psychological experience possesses many different determinants of affective, cognitive, and behavioral order in complex interaction and mostly hidden to our consciousness. User experience models face this complexity by presenting a reduced set of variables and interactions. Most of these models have been created on a deductive but also largely intuitive basis. This poses three problems: First, the UX models’ authors don’t propose a systematic response to the question of “how to know what variables use into the UX model?” Second, most UX models overlook the components that arise to the user’s consciousness. Third, even with this multitude of UX models, UX designers continue to rely heavily on intuition. Based on previous work, we propose the Aware UX Model, built systematically, and gathering empirical users’ data. It focuses on the components, mostly thoughts, and feelings, that arise in the user’s consciousness. The model provides their characterization and a rational account of its emergence in the UX. In addition, we propose a construction method for UX models based on our own process. We expose a case study to substantiate the Aware UX model and to contribute to its validation. Finally, we propose heuristics coupled to the Aware UX model components. © 2020, Springer Nature Switzerland AG.
Battery State of Charge Estimation Error Comparison Across Different OCV-SOC Curve Approximating Methods
(Springer Verlag, 2019-01-01) Sanín R.; Fernández-Montoya M.; Garzón-Vargas M.A.; Velásquez-López A.
Accurate estimation of Rechargeable Batteries Parameters, such as State Of Charge (SOC), contributes to their safety and reliable operation in a wide variety of applications (e.g. automotive, stationary energy storage, medical equipment, among others). Due to variations in environmental and load conditions, battery cells and their instrumentation devices can experience deviations from their standard operation values, leading to an imprecise measurement of State Of Charge (SOC) indicator variables. Then, SOC estimation models are required. These estimations developed through analytical models consider intrinsic battery chemistry variables and operation cycle conditions are taken from charge and discharge testing; where hysteresis phenomena, measurement, and theoretical adjustment errors can be identified over Open Circuit Voltage (OCV)-SOC curves. This study compares the model adjustment errors of several estimation methods, taken from literature to approximate the OCV-SOC curves of a rechargeable battery pack. © 2019, Springer Nature Switzerland AG.
Collaborative planning of a manufacturing design project through a novel e-engineering hub
(2005-07-04) Mejía Gutiérrez, Ricardo; Molina, Arturo; Augenbroe, Godfried; Universidad EAFIT. Departamento de Ingeniería de Diseño; Ricardo Mejia (rmejiag@eafit.edu.co); Ingeniería de Diseño - GRID
Due to globalization of economies, organizations have started a new way of thinking in projects development -- New needs arise on working practices as well as supporting Information and Communication Technologies -- This article describes a novel concept of an e-engineering HUB for remote collaboration on engineering partnerships -- It offers collaborative project planning services that focus on collaborative, tactical decision making that goes into the formation, work planning, contracting and trust building on both sides of an e-engineering partnership -- An e-Hub software prototype has been developed and a domain-specific scenario originated in the manufacturing-engineering domain has been evaluated
Collaborative tools for global design project management: case study of an academic experience
(2010-06-20) Mejía Gutiérrez, Ricardo; Esparragoza, Iván E.; Rodríguez Arroyave, Carlos Arturo; Universidad EAFIT. Departamento de Ingeniería de Diseño; Ricardo Mejia (rmejiag@eafit.edu.co); Ingeniería de Diseño - GRID
The management of information and the capture of design ideas are very critical during theproduct development and product lifecycle management -- They could be very challenging tasks when time, efficiency and quality are important and the concurrent design team is physically distributed in different locations -- However, the existing technology for communication, the increase of tools over the Internet and the cloud computing model have made possible and accelerated the means of sharing information synchronous and asynchronously in a very effective way -- This has facilitated the work of teams that in many cases are geographically dispersed around the world -- Therefore, there is a need to start preparing the future engineers in the use of collaborative tools for global design project management not only to schedule and coordinate all the required tasks for the project but also to capture all the information, ideas and concepts generated during the design process which contains valuable data that supports design decisions -- This paper presents the use of several tools for communication and project management used in academic collaborative global design projects -- In these projects, students are required to work with international partners from different universities in coordinating activities and documenting the conceptual design for a given problem -- The paper reports the experience using the tools and discusses opportunities and pitfalls in the use of them as they were identified by the authors
Collaborative tools for global design project management: Case study of an academic experience
(AMER SOC ENGINEERING EDUCATION, 2010-01-01) Esparragoza I.; Mejia R.; Rodriguez C.
The management of information and the capture of design ideas are very critical during the product development and product lifecycle management. They could be very challenging tasks when time, efficiency and quality are important and the concurrent design team is physically distributed in different locations. However, the existing technology for communication, the increase of tools over the Internet and the cloud computing model have made possible and accelerated the means of sharing information synchronous and asynchronously in a very effective way. This has facilitated the work of teams that in many cases are geographically dispersed around the world. Therefore, there is a need to start preparing the future engineers in the use of collaborative tools for global design project management not only to schedule and coordinate all the required tasks for the project but also to capture all the information, ideas and concepts generated during the design process which contains valuable data that supports design decisions. This paper presents the use of several tools for communication and project management used in academic collaborative global design projects. In these projects, students are required to work with international partners from different universities in coordinating activities and documenting the conceptual design for a given problem. The paper reports the experience using the tools and discusses opportunities and pitfalls in the use of them as they were identified by the authors. © American Society for Engineering Education, 2010.
Complejidad, Sostenibilidad y Tecnología: Un enfoque integrador para el desarrollo de proyectos académicos en ingeniería de diseño
(2011-08-05) Mejía Gutiérrez, Ricardo; Osorio Gómez, Gilberto; Universidad EAFIT. Departamento de Ingeniería de Diseño; Ricardo Mejia (rmejiag@eafit.edu.co); Gilberto Osorio (gosoriog@eafit.edu.co); Ingeniería de Diseño - GRID
The materialization of design projects has demonstrated to be a key factor for the evaluation of new ideas -- In this field, the Department of Product Design Engineering from EAFIT University has been pioneer in Colombia -- In order to take this process to a new level, an integrated approach has been proposed oriented to the design and development of sustainable transport value added products, particularly in the field of electric mobility, where transport systems complexity is combined with the need of developing sustainable products, together with the use of technologies in the area of Product Lifecycle Management (PLM). It is presented the adopted methodology for development of this kind of projects at academic level, detailing main activities and tools, and describing a successful case study for the design of a functional prototype of an electric bicycle, in order to demonstrate the findings and experiences obtained in this kind of implementations that, in the future, will be translated into trained engineers on advanced product development, as well as to raise industrial awareness in the subject

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