Journal Articles

Neves, T. C., F. G. Teixeira, and S. S. Lisboa, "Modelagem sob medida: parametrização do traçado de moldes básicos para calça feminina", DESIGN E TECNOLOGIA, vol. 8, pp. 96 - 109, 2018. AbstractFull Text

The pattern making process is a key step in the development of apparel products. In this process, it is necessary to develop basic patterns, which serve as basis for the interpretation of different types of clothes.The purpose of this article is to present the automation of the basic patterns design process for women's pants construction. To do so, we used the Grasshopper parametric modeling program, which is a plugin of the Rhinoceros software. This system allows a parameterization of shapes, in a way that allows an adaptation of measurements of the geometry created.For the development of the tracing of the basic models of the women's pants, we used the steps indicated in the garment modeling method proposed by Romero (1995). The process in the Grasshopper uses mathematical operations and tools for drawing points, lines and curves.With the automation of the basic mold tracing, it is possible to adapt parameters according to the measurement chart of individual companies or customers.This adaptation also assists in the creation of several custom patterns, such as other types of pants and shorts, which can be interpreted through the basic pattern of pants. In a comparative analysis with the traditional method, the moldsgenerated in the Grasshopper obtained high fidelity in comparison to the tracing done manually, which allows the development of the molds without loss of quality. In this context, this project also aims to collaborate in the construction of a set of basic patterns that support the development of custom clothing.

Bressan, F., F. G. Teixeira, and W. K. Júnior, "Design e Tecnologia: transposição de volumetrias entre superficies poligonais e polysurfaces nurbs", REVISTA EDUCAÇÃO GRÁFICA, vol. 21, pp. 213 - 229, 2017. AbstractFull Text

The present study is divided in two constructive ways: conversion of volumetric bodies constituted by polygonal surfaces (quads) into surfaces NURBS and conformation of patterns or other polygonal entities on such volumetric bodies. There are numerous cases where the target topology cannot be converted to a single and unique NURBS surface, a procedure that would make the task of volumetric transposition easier and which would already be solved by the use of ready made parametric modeling tools. To carry out this article's tasks, generative modeling systems and associative parametrization strategies were adopted. The knowledge for the construction of the systems used in the present research can be used in different fields that have, as a paradigm, the design creativity as one of its beacons, such as Visual Arts, Architecture and Design. The present work aims to make use of digital manufacturing through laser cutting, 3D printing or CNC milling technologies, at the same time expanding strategies.

Corrêa, P., F. G. Teixeira, and P. Maldonado, "Design-by-Analogy: proposta para um modelo de ferramenta computacional de auxílio ao processo de design", DESIGN E TECNOLOGIA, vol. 7, issue 14, pp. 30 - 40, 2017. AbstractFull Text

New products development is a highly complex activity, where applying methodologies and tools to support the engineering design process is fundamental in conducting the numerous activities between the phases involved. The conceptual design phase is a critical moment for product success, where access to the existingdesign knowledgeand the prior experience of the designer are the basis for building the creative process. Thus, the Design-by-Analogy (DbA) field isa design approach that uses analogousprocesses to stimulate ideas generation seeking innovative solutions through computational techniques and tools. In this context, this article aims to propose a model forasoftware developmentbased on DbA techniques to stimulate and assist designers during project process. To fulfill this objective, literature review and existing state of the art DbA software survey establish the knowledge bases for this study. Given extracted information from these sources, analysis criteria were defined for the existing software quality characteristics evaluation. This, combined a set of desirable characteristics to establish the requirements that guided theelaboration of theproposed model, specifying its components and structure. Theresult of this paper is the model proposal, where combining existing techniques and new components that explore alternative paths will promote advances in DbA field. This model will guide the development of a softwareto aid and stimulate the conceptual phase of the project, allowing the registration of the knowledge generated during the development of projects so that they can be reused in future projects, adds new possibilities giving continuity to the studies in digital tools to support the engineering design process.

Senna, C. E., and F. G. Teixeira, "Rendering: a evolução da linguagem gráfica, seus precursores e sua relação com o design de produto", REVISTA BRASILEIRA DE EXPRESSÃO GRÁFICA, vol. 5, pp. 48 - 68, 2017. AbstractFull Text

This article focuses the evolution of a graphical language, introduced at the start of the twentieth century, namely with the term Rendering, in the USA. The works of Raymond Loewy, Norman Bel Geddes, Henry Dreyfuss and Walter Dorwin Teague between 1930 and 1960 were chosen as subjects of analysis. This article presents an overall view of their projects at the time, knowing that they were pioneers in changing the visuality, construction and presentation of images. As a methodological strategy, our research took the biographies of different authors, their main projects, collaborations and individual image productions into consideration. In carrying out our research, it became clear that precursors of this graphic language were not treated with appropriate consideration in design literature. Even today, when the subject is dealt with, it's often treated lightly, even in specialized biographies.

Brendler, C. F., and F. G. Teixeira, "Método para obtenção de medidas antropométricas utilizando um digitalizador 3D de baixo custo", Design e Tecnologia, vol. 6, issue 11, pp. 53 - 67, 2016. AbstractFull Text

The aim is to develop a method for obtaining anthropometric parameters using a low cost three-dimensional digitizer. The research methodology is divided in five steps: literature review; collection and analysis of anthropometric data using the direct method and also the development of the indirect method for obtaining anthropometric measurements; comparison and data analysis; discussion of results and the completion of the research. The digitization process developed it is based on Microsoft Kinect, a low-cost device, and also on the software kscan3D. For the anthropometric collection from the three-dimensional model is used Autodesk 3D Studio Max. This research presents requirements and constraints for generate the three-dimensional model in order to obtain a mesh with satisfactory precision. It is presented a flowchart to guide the implementation of the developed method in the design process as well as a summary table containing guidelines for this application. The developed method achieved 97.96% of compatibility considering the results of the measured variables in relation to the direct method. These results were obtained with an exposure time of the individual of only 3 minutes and 28 seconds, which is less than the time required in the direct method – 1 hour and 12 minutes. This demonstrates one major contribution of the developed method.

Teixeira, F. G., "Perspectivas axonométricas e vistas principais no ensino de geometria descritiva", Revista Educação Gráfica, vol. 20, pp. 289 - 302, 2016. AbstractFull Text

This work present axonometric and orthographic views to learning of Descriptive Geometry concepts. Axonometric views are a good way to show the utility of successive auxiliary views because they present the process and promote the 3D comprehension of objects. The paper proposes ways to build axonometric projections from any point of view by Descriptive Geometry tools. Besides, the use of the principal views enhances the understanding of successive auxiliary views, but in a more complex context where the student must choose directions to find the correct projections. Through these directions, you can choose the sequence of auxiliary planes that result in orthographic views. This work shows how two unusual concepts in the Descriptive Geometry education context can promote a better understanding of many of its contents.

Brendler, C. F., F. G. Teixeira, F. P. da Silva, and M. S. Müller, "Uso da digitalização 3D do corpo humano para desenvolvimento de produtos personalizados: Análise comparativa entre os scanners Artec EVA e o Kinect", Estudos em Design (Online), vol. 24, pp. 41 - 60, 2016. AbstractFull Text

The aim of this paper is comparing both tridimensional scanners: white light Artec Eva; and Infra-red light Microsoft Kinect. This comparison enables evaluate possibilities of these equipments for developing user-centered product projects. It was carried out comparison's concerning both precision and dimensional deviation through virtual and physical models generated by CAD and CAM systems. It was verified the need of eliminating the human body movement by using physical models in the performed analysis. As a result, both scanners demonstrated measurement precision, with the advantage of Artec Eva over Microsoft Kinect. The selection of the most appropriated scanner concerning the projects needs evolves factors such as: the available cost for the project; and the required precision fidelity for the aimed product. Both digital scanners considered in this paper contribute to the development of customized products, showing the relationships between tools and needed product fidelity.

Brendler, C. F., F. P. da Silva, and F. G. Teixeira, "Avaliação de modelos obtidos por diferentes sistemas de digitalização 3d para produtos personalizados", DAPesquisa, vol. 10, pp. 68 - 86, 2016, 2015. AbstractFull text

The purpose is to evaluate models obtained by different 3D scanning systems, and that the geometric variations can generate implications for anthropometric measurements for custom product design. For comparison and analysis, the right leg of a subject was scanned by white light 3D scanner (Artec Eva) and the infrared scanner (Microsoft Kinect). 3D models obtained by the scanners were compared using the Geomagic Qualify software. Also, by CNC machining of visual comparisons were performed analysis, for pressure mapping and thermography. The results were satisfactory both for the use of Kinect scanner and for Artec Eve. However, there was a dimensional difference of about 7 mm between the 3D models, which shows higher accuracy measures the models obtained by Eve Artec scanner. However, does not invalidate the use of Kinect for developing custom product designs. What will determine the most suitable for each type 3D scanner product is the degree of accuracy necessary for the product to perform its function with greater comfort and efficiency.

Teixeira, F. G., P. Thormann, R. P. da Silva, and T. L. K. da Silva, ""Design gráfico" e a worldskills competition: verticalização do ensino e o mercado de trabalho", Competência - Revista da Educação Superior do Senac-RS, vol. 8, pp. 75 - 90, 2015. AbstractFull Text

This article investigates the systematization of technical education in “graphic design”, issues related to curriculum and to structuring guidelines of technical courses at secondary level, and also its technological area. It also explains the use of specific nomenclature in each mode of education, the relations of the verticalization of technical education at secondary level, according to the Ministry of Education and considerations related to professional occupations listed in the Brazilian Classification of Occupations of the Ministry of Labor and Employment. The article also explores the national and international scientific competitions, associated with professional education at secondary level often entitled Knowledge Olympics or Professional Training Tournaments. The information presented uses the National Catalogue of Technical Courses proposed in 2008, the Brazilian Classification of Occupations, the Knowledge Olympics guidelines developed and organized by the National Service of Industrial Education, and the rules and guidelines of the International Tournament of Professional Training - WorldSkills Competition- as a checking basis. In addition, the study aims to reflect on a contribution to the labor market and also to the technological, scientific and cultural development of the society through the verticalization of technical education supported by scientific competitions in the graphic design field.

Viaro, F. S., F. G. Teixeira, R. P. da Silva, and S. L. Sapper, "Da ideia ao conceito de produto: o uso de técnicas criativas combinadas para auxiliar no processo de desenvolvimento de novos produtos de design", Estudos em Design (Online), vol. 23, pp. 49 - 60, 2015. AbstractFull Text

A criatividade é um fator essencial para a competitividade dos produtos e o sucesso das empresas. Existe uma série de técnicas criativas que podem ser utilizadas por equipes de projeto de produto. Porém, ocorrem dificuldades na aplicação sistemática dessas técnicas no momento de gerar as concepções de projeto. O objetivo deste trabalho é discutir o uso de técnicas criativas para a geração de ideias de produtos durante o Processo de Desenvolvimento de Produtos (PDP). Foi realizado um estudo experimental por meio do desenvolvimento de um produto que auxilie no transporte de crianças. O desenvolvimento do produto foi realizado até a etapa de projeto conceitual. Para isso, foi utilizado o jogo Creative Sketch na geração de ideias, assim como, técnicas de avaliação e seleção de concepções de projeto para eleger as concepções mais adequadas aos requisitos de projeto. A utilização do jogo possibilitou a geração de 72 ideias em um curto período de tempo. Além do jogo, utilizaram-se o método da síntese funcional e a técnica da matriz morfológica para a geração de alternativas, assim como o método de Pugh para a seleção das melhores alternativas. Como resultado desse processo obtiveram-se duas concepções de produto que atenderam aos requisitos de projeto estabelecidos. Palavras-chave: Criatividade, Técnicas para a geração de ideias, PDP, Jogo, Seleção de concepções.