Gilberto Osorio | Universidad EAFIT (original) (raw)
Papers by Gilberto Osorio
Research Square (Research Square), Oct 2, 2023
For the manufacture of significantly repetitive products that require assembly, different strateg... more For the manufacture of significantly repetitive products that require assembly, different strategies have been proposed to improve times, the use of resources, and the reduction of associated costs. For this purpose, there are many documented methodologies that point to method and time studies, reduction of the number of components or the complexity of the assembly as the Design For Assembly (DFA), sequence analysis with Assembly Sequence Planning (ASP), Bourjault, and/or graphs, among others. In the case of products that require to be assembled at the site where they will operate, manufacturing in a fixed position, and of which several assemblies will be performed in different places, the execution of these has been done, almost always, in an intuitive way, that is, solving on the fly, starting from common sense and accumulating parts. The existing literature has limited information on the methods developed for assembly with these characteristics. This study presents a new methodology of sequence generation called Collaborative Assembly Sequence Planning (CASP) for the on-site installation of a product in which, the criteria and knowledge of a group of engineers are considered, helping to identify the assembly operations, the sequences, the arrangement and allocation of resources and tasks for the development of the assembly. Additionally, this methodology is verified in a case study applied to a photovoltaic charging station, for which a feasible, effective, detailed, and structured assembly sequence was collaboratively generated for the assembly of such a product. The results show the applicability of the CASP methodology and suggest that it could be applied in other complex product assembly contexts requiring on-site assembly.
Proceedings of the Design Society
Prototypes are a critical aid in the product development process, allowing designers translate co... more Prototypes are a critical aid in the product development process, allowing designers translate concepts to reality. However, the execution of prototypes depends heavily on the designer experience, evidenced in research in the need of creating design support tools to establish a standard for a prototyping effort. To improve on these findings, the Proto-Arch is introduced as a partial result of creating a standard for executing prototypes in each product development phase based on the prototyping roles and purposes. Proto-Arch defines the prototyping activities in the embodiment design phase.
International Journal on Interactive Design and Manufacturing (IJIDeM), 2020
Unfortunately, the corresponding author name was incorrectly spelled as "Simán Polanía-Restrepo" ... more Unfortunately, the corresponding author name was incorrectly spelled as "Simán Polanía-Restrepo" instead of 'Simón Polania-Restrepo" in the original publication. The correct version of author name is updated here. The original article has been corrected. Publisher's Note Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.
MATEC Web of Conferences, 2017
This work presents an analysis about how the performance of silicon photovoltaic cells is influen... more This work presents an analysis about how the performance of silicon photovoltaic cells is influenced by the use of epoxy resin as encapsulation material with flat roughness. The effect of encapsulation on current at maximum power of mono-crystalline cell was tested indoor in a solar simulator bench at 1000 w/m² and AM1.5G. The results show that implementation of flat roughness layer onto cell surface reduces the maximum current inducing on average 2.7% less power with respect to a cell before any encapsulation. The losses of power and, in consequence, the less production of energy are explained by resin light absorption, reflection and partially neutralization of non-reflective coating.
Sustainable Design and Manufacturing 2017, 2017
In the case of solar vehicles, since the primary necessity is to optimise the energy efficiency d... more 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.
International Journal of Energy Research, 2017
The design of a battery pack commonly deals with high performance goals and challenging constrain... more The design of a battery pack commonly deals with high performance goals and challenging constraints in terms of cost, volume or weight. One of the most crucial variables to maximise is the nominal energy, which depends on the number of discrete battery cells that can be allocated and their individual technical specifications. This work proposes a systematic method to optimise the nominal energy of a constrained battery pack from the perspective of the series-parallel topology. A mathematical and graphical characterisation is presented on how the main battery's variables are related to a topology bounded to discretisation procedures. It was theoretically found that the effects of rounding the values of the topology may lead to a considerable loss of potential nominal energy, a risk that increases linearly with the number of series. The behaviour of the battery is assessed under nominal conditions and under the event of a cell failure. The theoretical analysis suggests that the detrimental effects due to an open-circuit increase as the number of series increases, while it is the opposite in the case of a shorted cell. The method is satisfactorily implemented in the development of two different battery packs for solar competition cars with limiting regulations. The candidate topologies outperformed the nominal energy of topologies defined without the method in up to 5%. It was also found that selecting an energy-maximising topology is not always the most convenient choice, because other variables may be of interest and are dependent on the topology as well. The method is of great use to guide the topology definition process in early theoretical stages, which is usually a compromise between allocating as much cells as possible within constraints, and approaching other performance goals such as a given nominal voltage or capacity.
SPIE Proceedings, 2016
Concentrating Photo Voltaic (CPV) systems maximize energy harvested from the sun with multi-junct... more Concentrating Photo Voltaic (CPV) systems maximize energy harvested from the sun with multi-junction solar cells of less area, reducing related implementation costs and reaching energy production thresholds up to 38,9 %. Nowadays, CPV systems are generally implemented in solar energy farms in a permanent location, however, these systems could be used in other dynamic contexts, such as vehicles or portable devices. In this way, mechanical and geometrical parameters related to manipulation, transportation and installation should be carefully considered at the design stage. Besides, each condition of use presents different variables affecting these parameters. In all, there is not an established architecture for these systems, opening up the possibility of radically changing their use, geometry and components. Therefore, a concept of a methodical process for designing of CPV systems is proposed in order to predict their behavior in terms of implementation and energy production. This might allow the development of robust concepts that can be adapted to different context of use as required, providing an itinerant character and thus extending the field of implementation of these systems beyond a static use. The relevant variables for the use of CPV systems are determined through experimentation considering the implementation of Fresnel lenses as light concentrators. This allows generating a structured design guide composed of different methods of measurement, selection and development. The methodical process is based on a perspective of functional modules considering needs, technical aspects and particular usage conditions of each design and it would provide appropriate guidelines in each circumstance.
International Journal on Interactive Design and Manufacturing (IJIDeM), 2016
For about 5 years, production of automobiles equipped with head-up display (HUD) systems has cont... more For about 5 years, production of automobiles equipped with head-up display (HUD) systems has continuously grown and this trend will remain for at least three years more from 2014 [7,19]. Therefore, looking for clarifying how to orientate future efforts in developing these systems, a systematic analysis approach has been implemented for identifying best design practises, common characteristics, gaps, implementation trends and research topics on automotive HUD systems. The proposed approach is conducted on two areas, firstly exploring the current scientific literature to find the most relevant research topics and understanding how these are evolving. Secondly, a competitive intelligence analysis was conducted compiling patents related to automotive HUD systems. This analysis was specially oriented towards determining, currently and in the near future, basic product design implementation trends in automotive HUD systems. Finally, the results obtained from both scientific and technological points of view were compared and commented,
Lecture Notes in Mechanical Engineering, 2016
The racing solar cars are characterized by the constant pursuit of energy efficiency. The tight b... more The racing solar cars are characterized by the constant pursuit of energy efficiency. The tight balance between energy inputs and consumption is the main reason to seek optimization in different areas. The vehicle weight is directly related to the energy consumption via rolling resistance of the tires. The relation between weight and energy consumption is quantified. The structural optimization techniques are studied and a series of rules is obtained to iteratively improve the shape of structural parts reducing its weight. The implementation is done in a practical case and satisfactory results are achieved.
International Journal of Computer Aided Engineering and Technology, 2016
The need for more flexible tools and reduction of time and cost has led to the implementation of ... more 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.
Sistemas y Telemática, 2012
The implementation of computational aids in product design is a demand in the design processes on... more The implementation of computational aids in product design is a demand in the design processes on century XXI, that because they allow an increase in quality and creativity of the deliverables of a design process. But this implementation should be guided to an academic process, where technologies methodologies work along. This article presents the results of an implementation of virtual reality techniques to validate and increased product design courses within the undergraduate electrical mobility in Product Design Engineering at that university. Resumen La implementación de ayudas informáticas en el diseño de productos es prácticamente una demanda en el diseño del siglo XXI, ya que su uso permite un aumento de la calidad y la creatividad de los entregables de un proceso de diseño. Pero esta implementación debe estar guiada por un proceso académico, en el cual se implementen tecnologías y metodologías de trabajo. El presente artículo muestra los resultados de una implementación de técnicas de realidad virtual y aumentada para validar el diseño de productos en cursos de movilidad eléctrica dentro del pregrado
International Journal on Interactive Design and Manufacturing (IJIDeM), 2015
Commonly, ergonomic analysis of the products’ assembly processes starts in the embodiment design ... more Commonly, ergonomic analysis of the products’ assembly processes starts in the embodiment design phase, when the information of the parts and their interaction are clearly defined. This may imply iterations during the design process for making improvements associated with ergonomic issues. We asked whether it is possible to infer possible ergonomic issues related to the manual assembly process during product conceptualisation. So, we integrated an AR-based modelling tool, in which the user creates and places virtual parts over the context in a top-down design strategy using his/her hands as interface, with an Ergonomic Assessment Module for continuous evaluation of the user postures, movements and forces related to the created parts. In that way, the spectrum of the potential solutions during the conceptualisation phase, when the information about the problem is vague enough, can be delimited and the convergence to the near-optimal solution may be more effective.
International Journal on Interactive Design and Manufacturing (IJIDeM), 2015
The design process of an object, system or space must consider the physical, mental and psycholog... more The design process of an object, system or space must consider the physical, mental and psychological traits of its intended users. Moreover, the results of the design process are also defined by the attributes related to the context. However, current product design approaches does not offer a proper balance among the “human”, “artefact” and “context” dimensions. Consequently, a product design methodology that covers the overall Human-Artefact-Context system, from a cognitive and physical ergonomics point of view, is proposed. The generalization of the proposal is based on a synergic structure of User-Centered Design methodologies and ergonomic criteria that prevails throughout the product development stages. The latter ensures a better adaptation to specific context and user needs in a way that improves efficiency, security and consumer well-being.
International Journal on Interactive Design and Manufacturing (IJIDeM), 2015
In most of the surrounding discrete products, style plays a very important role. Specifically, co... more In most of the surrounding discrete products, style plays a very important role. Specifically, color has a great impact in the visual perception, and its meaning can vary depending on the context where the product is located. Anyway, there are not dedicated applications devoted to support designers during this activity of color selection in the conceptual stage of the product design process. In this way, this paper presents the development and evaluation of a software platform that allows the user to choose a scheme of colors of a product concept using a Natural User Interface (NUI) in a 3D scanned context. In addition, the NUI was validated and evaluated with a case study oriented to compare the scheme of colors, for a conceptual product, selected by product designers, an expert panel and the target user in order to prove that this interface can enhance the process of color selection during the concept stage of the product design process, with regards to a traditional selection process with images and user profile.
Journal of Photonics for Energy, 2015
Abstract. Photovoltaic (PV) applications such as in the architectural, automotive, and aerospace ... more Abstract. Photovoltaic (PV) applications such as in the architectural, automotive, and aerospace industries face design contradictions because they are expected to produce a lot of energy but are constrained by available area, surface shape, incident irradiance, shadows, and other aspects that have a negative influence on the energy produced by the solar panel. Solar competition vehicles are some of these challenging PV applications. The design of such solar arrays needs to consider efficiency evaluation in order to optimize space; it is difficult not to install solar modules in areas impacted by shadows. A design procedure for a solar array configuration based on shadow analysis for competition vehicles is presented. The principle is that shadows in moving objects can be simulated, since the vehicle, the earth and the sun are are moving in semipredictable patterns, thus net energy collection can be forecast. The case study presented is the solar array design of a vehicle that participated in the World Solar Challenge 2013. The obtained results illustrate how the employment of the procedure gives insights on important aspects to consider and also delivers qualitative and quantitative information for decision making. In addition, the experience in competition highlights some issues to be considered, modified, or improved in further vehicle designs.
International Journal on Interactive Design and Manufacturing (IJIDeM), 2015
Nowadays, engineering programs with Problem Based Learning methodologies, develop functional prot... more Nowadays, engineering programs with Problem Based Learning methodologies, develop functional prototypes for demonstration purposes. Most of these ideas, many of them promising, are left behind once the academic term is over. Only a slight percentage of them are followed by an industrialization process, which is not formalized and it is based on third-party experiences. Even if well-known product design methodologies include some methods and activities oriented to evolve the product along its life cycle, they are not suitable for academic projects or they leave out some aspects of the local context. This has been an unexploited area, with high potential as there is no transcendence with academic projects; especially after all the time, effort, and creativity employed into a potentially profitable idea. In this way, the authors propose a methodology intended to allow the transition from academic functional prototype to a product ready to be industrialized according to the capabilities of the local context. Emerging economies, where industrial capabilities may be limited. The development of the methodology has been applied in a case study of an individual electric vehicle. This vehicle was developed with students and researchers within the Design Engineering Research Group (GRID) and it is intended to transport the persons responsible to distribute mail, and packages internally in the University campus. The object of such a case is to study the feasibility to promote this vehicle from functional prototype to a product ready to be industrialized under local industrial constraints.
SPIE Proceedings, 2014
ABSTRACT Nowadays, it is very important to explore the qualitative characteristics of autonomous ... more ABSTRACT Nowadays, it is very important to explore the qualitative characteristics of autonomous mobility systems in automobiles, especially disruptive technology like Vehicle to Vehicle (V2V) and Infrastructure to Vehicle (I2V), in order to comprehend how the next generation of automobiles will be developed. In this sense, this research covers a general review about active safety in automobiles where V2V and I2V systems have been implemented; identifying the more realistic possibilities related to V2V and I2V technology and analyzing the current applications, some systems in development process and some future conceptual proposals. Mainly, it is notorious the potential development of mixing V2V and I2V systems pointing to increase the driver's attention; therefore, a configuration between these two technologies and some augmented reality system for automobiles (Head-Up Display and Head-Down Display) is proposed. There is a huge potential of implementation for this kind of configuration once the normative and the roadmap for its development can be widely established.
Research Square (Research Square), Oct 2, 2023
For the manufacture of significantly repetitive products that require assembly, different strateg... more For the manufacture of significantly repetitive products that require assembly, different strategies have been proposed to improve times, the use of resources, and the reduction of associated costs. For this purpose, there are many documented methodologies that point to method and time studies, reduction of the number of components or the complexity of the assembly as the Design For Assembly (DFA), sequence analysis with Assembly Sequence Planning (ASP), Bourjault, and/or graphs, among others. In the case of products that require to be assembled at the site where they will operate, manufacturing in a fixed position, and of which several assemblies will be performed in different places, the execution of these has been done, almost always, in an intuitive way, that is, solving on the fly, starting from common sense and accumulating parts. The existing literature has limited information on the methods developed for assembly with these characteristics. This study presents a new methodology of sequence generation called Collaborative Assembly Sequence Planning (CASP) for the on-site installation of a product in which, the criteria and knowledge of a group of engineers are considered, helping to identify the assembly operations, the sequences, the arrangement and allocation of resources and tasks for the development of the assembly. Additionally, this methodology is verified in a case study applied to a photovoltaic charging station, for which a feasible, effective, detailed, and structured assembly sequence was collaboratively generated for the assembly of such a product. The results show the applicability of the CASP methodology and suggest that it could be applied in other complex product assembly contexts requiring on-site assembly.
Proceedings of the Design Society
Prototypes are a critical aid in the product development process, allowing designers translate co... more Prototypes are a critical aid in the product development process, allowing designers translate concepts to reality. However, the execution of prototypes depends heavily on the designer experience, evidenced in research in the need of creating design support tools to establish a standard for a prototyping effort. To improve on these findings, the Proto-Arch is introduced as a partial result of creating a standard for executing prototypes in each product development phase based on the prototyping roles and purposes. Proto-Arch defines the prototyping activities in the embodiment design phase.
International Journal on Interactive Design and Manufacturing (IJIDeM), 2020
Unfortunately, the corresponding author name was incorrectly spelled as "Simán Polanía-Restrepo" ... more Unfortunately, the corresponding author name was incorrectly spelled as "Simán Polanía-Restrepo" instead of 'Simón Polania-Restrepo" in the original publication. The correct version of author name is updated here. The original article has been corrected. Publisher's Note Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.
MATEC Web of Conferences, 2017
This work presents an analysis about how the performance of silicon photovoltaic cells is influen... more This work presents an analysis about how the performance of silicon photovoltaic cells is influenced by the use of epoxy resin as encapsulation material with flat roughness. The effect of encapsulation on current at maximum power of mono-crystalline cell was tested indoor in a solar simulator bench at 1000 w/m² and AM1.5G. The results show that implementation of flat roughness layer onto cell surface reduces the maximum current inducing on average 2.7% less power with respect to a cell before any encapsulation. The losses of power and, in consequence, the less production of energy are explained by resin light absorption, reflection and partially neutralization of non-reflective coating.
Sustainable Design and Manufacturing 2017, 2017
In the case of solar vehicles, since the primary necessity is to optimise the energy efficiency d... more 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.
International Journal of Energy Research, 2017
The design of a battery pack commonly deals with high performance goals and challenging constrain... more The design of a battery pack commonly deals with high performance goals and challenging constraints in terms of cost, volume or weight. One of the most crucial variables to maximise is the nominal energy, which depends on the number of discrete battery cells that can be allocated and their individual technical specifications. This work proposes a systematic method to optimise the nominal energy of a constrained battery pack from the perspective of the series-parallel topology. A mathematical and graphical characterisation is presented on how the main battery's variables are related to a topology bounded to discretisation procedures. It was theoretically found that the effects of rounding the values of the topology may lead to a considerable loss of potential nominal energy, a risk that increases linearly with the number of series. The behaviour of the battery is assessed under nominal conditions and under the event of a cell failure. The theoretical analysis suggests that the detrimental effects due to an open-circuit increase as the number of series increases, while it is the opposite in the case of a shorted cell. The method is satisfactorily implemented in the development of two different battery packs for solar competition cars with limiting regulations. The candidate topologies outperformed the nominal energy of topologies defined without the method in up to 5%. It was also found that selecting an energy-maximising topology is not always the most convenient choice, because other variables may be of interest and are dependent on the topology as well. The method is of great use to guide the topology definition process in early theoretical stages, which is usually a compromise between allocating as much cells as possible within constraints, and approaching other performance goals such as a given nominal voltage or capacity.
SPIE Proceedings, 2016
Concentrating Photo Voltaic (CPV) systems maximize energy harvested from the sun with multi-junct... more Concentrating Photo Voltaic (CPV) systems maximize energy harvested from the sun with multi-junction solar cells of less area, reducing related implementation costs and reaching energy production thresholds up to 38,9 %. Nowadays, CPV systems are generally implemented in solar energy farms in a permanent location, however, these systems could be used in other dynamic contexts, such as vehicles or portable devices. In this way, mechanical and geometrical parameters related to manipulation, transportation and installation should be carefully considered at the design stage. Besides, each condition of use presents different variables affecting these parameters. In all, there is not an established architecture for these systems, opening up the possibility of radically changing their use, geometry and components. Therefore, a concept of a methodical process for designing of CPV systems is proposed in order to predict their behavior in terms of implementation and energy production. This might allow the development of robust concepts that can be adapted to different context of use as required, providing an itinerant character and thus extending the field of implementation of these systems beyond a static use. The relevant variables for the use of CPV systems are determined through experimentation considering the implementation of Fresnel lenses as light concentrators. This allows generating a structured design guide composed of different methods of measurement, selection and development. The methodical process is based on a perspective of functional modules considering needs, technical aspects and particular usage conditions of each design and it would provide appropriate guidelines in each circumstance.
International Journal on Interactive Design and Manufacturing (IJIDeM), 2016
For about 5 years, production of automobiles equipped with head-up display (HUD) systems has cont... more For about 5 years, production of automobiles equipped with head-up display (HUD) systems has continuously grown and this trend will remain for at least three years more from 2014 [7,19]. Therefore, looking for clarifying how to orientate future efforts in developing these systems, a systematic analysis approach has been implemented for identifying best design practises, common characteristics, gaps, implementation trends and research topics on automotive HUD systems. The proposed approach is conducted on two areas, firstly exploring the current scientific literature to find the most relevant research topics and understanding how these are evolving. Secondly, a competitive intelligence analysis was conducted compiling patents related to automotive HUD systems. This analysis was specially oriented towards determining, currently and in the near future, basic product design implementation trends in automotive HUD systems. Finally, the results obtained from both scientific and technological points of view were compared and commented,
Lecture Notes in Mechanical Engineering, 2016
The racing solar cars are characterized by the constant pursuit of energy efficiency. The tight b... more The racing solar cars are characterized by the constant pursuit of energy efficiency. The tight balance between energy inputs and consumption is the main reason to seek optimization in different areas. The vehicle weight is directly related to the energy consumption via rolling resistance of the tires. The relation between weight and energy consumption is quantified. The structural optimization techniques are studied and a series of rules is obtained to iteratively improve the shape of structural parts reducing its weight. The implementation is done in a practical case and satisfactory results are achieved.
International Journal of Computer Aided Engineering and Technology, 2016
The need for more flexible tools and reduction of time and cost has led to the implementation of ... more 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.
Sistemas y Telemática, 2012
The implementation of computational aids in product design is a demand in the design processes on... more The implementation of computational aids in product design is a demand in the design processes on century XXI, that because they allow an increase in quality and creativity of the deliverables of a design process. But this implementation should be guided to an academic process, where technologies methodologies work along. This article presents the results of an implementation of virtual reality techniques to validate and increased product design courses within the undergraduate electrical mobility in Product Design Engineering at that university. Resumen La implementación de ayudas informáticas en el diseño de productos es prácticamente una demanda en el diseño del siglo XXI, ya que su uso permite un aumento de la calidad y la creatividad de los entregables de un proceso de diseño. Pero esta implementación debe estar guiada por un proceso académico, en el cual se implementen tecnologías y metodologías de trabajo. El presente artículo muestra los resultados de una implementación de técnicas de realidad virtual y aumentada para validar el diseño de productos en cursos de movilidad eléctrica dentro del pregrado
International Journal on Interactive Design and Manufacturing (IJIDeM), 2015
Commonly, ergonomic analysis of the products’ assembly processes starts in the embodiment design ... more Commonly, ergonomic analysis of the products’ assembly processes starts in the embodiment design phase, when the information of the parts and their interaction are clearly defined. This may imply iterations during the design process for making improvements associated with ergonomic issues. We asked whether it is possible to infer possible ergonomic issues related to the manual assembly process during product conceptualisation. So, we integrated an AR-based modelling tool, in which the user creates and places virtual parts over the context in a top-down design strategy using his/her hands as interface, with an Ergonomic Assessment Module for continuous evaluation of the user postures, movements and forces related to the created parts. In that way, the spectrum of the potential solutions during the conceptualisation phase, when the information about the problem is vague enough, can be delimited and the convergence to the near-optimal solution may be more effective.
International Journal on Interactive Design and Manufacturing (IJIDeM), 2015
The design process of an object, system or space must consider the physical, mental and psycholog... more The design process of an object, system or space must consider the physical, mental and psychological traits of its intended users. Moreover, the results of the design process are also defined by the attributes related to the context. However, current product design approaches does not offer a proper balance among the “human”, “artefact” and “context” dimensions. Consequently, a product design methodology that covers the overall Human-Artefact-Context system, from a cognitive and physical ergonomics point of view, is proposed. The generalization of the proposal is based on a synergic structure of User-Centered Design methodologies and ergonomic criteria that prevails throughout the product development stages. The latter ensures a better adaptation to specific context and user needs in a way that improves efficiency, security and consumer well-being.
International Journal on Interactive Design and Manufacturing (IJIDeM), 2015
In most of the surrounding discrete products, style plays a very important role. Specifically, co... more In most of the surrounding discrete products, style plays a very important role. Specifically, color has a great impact in the visual perception, and its meaning can vary depending on the context where the product is located. Anyway, there are not dedicated applications devoted to support designers during this activity of color selection in the conceptual stage of the product design process. In this way, this paper presents the development and evaluation of a software platform that allows the user to choose a scheme of colors of a product concept using a Natural User Interface (NUI) in a 3D scanned context. In addition, the NUI was validated and evaluated with a case study oriented to compare the scheme of colors, for a conceptual product, selected by product designers, an expert panel and the target user in order to prove that this interface can enhance the process of color selection during the concept stage of the product design process, with regards to a traditional selection process with images and user profile.
Journal of Photonics for Energy, 2015
Abstract. Photovoltaic (PV) applications such as in the architectural, automotive, and aerospace ... more Abstract. Photovoltaic (PV) applications such as in the architectural, automotive, and aerospace industries face design contradictions because they are expected to produce a lot of energy but are constrained by available area, surface shape, incident irradiance, shadows, and other aspects that have a negative influence on the energy produced by the solar panel. Solar competition vehicles are some of these challenging PV applications. The design of such solar arrays needs to consider efficiency evaluation in order to optimize space; it is difficult not to install solar modules in areas impacted by shadows. A design procedure for a solar array configuration based on shadow analysis for competition vehicles is presented. The principle is that shadows in moving objects can be simulated, since the vehicle, the earth and the sun are are moving in semipredictable patterns, thus net energy collection can be forecast. The case study presented is the solar array design of a vehicle that participated in the World Solar Challenge 2013. The obtained results illustrate how the employment of the procedure gives insights on important aspects to consider and also delivers qualitative and quantitative information for decision making. In addition, the experience in competition highlights some issues to be considered, modified, or improved in further vehicle designs.
International Journal on Interactive Design and Manufacturing (IJIDeM), 2015
Nowadays, engineering programs with Problem Based Learning methodologies, develop functional prot... more Nowadays, engineering programs with Problem Based Learning methodologies, develop functional prototypes for demonstration purposes. Most of these ideas, many of them promising, are left behind once the academic term is over. Only a slight percentage of them are followed by an industrialization process, which is not formalized and it is based on third-party experiences. Even if well-known product design methodologies include some methods and activities oriented to evolve the product along its life cycle, they are not suitable for academic projects or they leave out some aspects of the local context. This has been an unexploited area, with high potential as there is no transcendence with academic projects; especially after all the time, effort, and creativity employed into a potentially profitable idea. In this way, the authors propose a methodology intended to allow the transition from academic functional prototype to a product ready to be industrialized according to the capabilities of the local context. Emerging economies, where industrial capabilities may be limited. The development of the methodology has been applied in a case study of an individual electric vehicle. This vehicle was developed with students and researchers within the Design Engineering Research Group (GRID) and it is intended to transport the persons responsible to distribute mail, and packages internally in the University campus. The object of such a case is to study the feasibility to promote this vehicle from functional prototype to a product ready to be industrialized under local industrial constraints.
SPIE Proceedings, 2014
ABSTRACT Nowadays, it is very important to explore the qualitative characteristics of autonomous ... more ABSTRACT Nowadays, it is very important to explore the qualitative characteristics of autonomous mobility systems in automobiles, especially disruptive technology like Vehicle to Vehicle (V2V) and Infrastructure to Vehicle (I2V), in order to comprehend how the next generation of automobiles will be developed. In this sense, this research covers a general review about active safety in automobiles where V2V and I2V systems have been implemented; identifying the more realistic possibilities related to V2V and I2V technology and analyzing the current applications, some systems in development process and some future conceptual proposals. Mainly, it is notorious the potential development of mixing V2V and I2V systems pointing to increase the driver's attention; therefore, a configuration between these two technologies and some augmented reality system for automobiles (Head-Up Display and Head-Down Display) is proposed. There is a huge potential of implementation for this kind of configuration once the normative and the roadmap for its development can be widely established.