FABIO GONCALVES TEIXEIRA

The conceptual design step is the most complex of the design process and brings great challenges to designers. The number of possible concepts from a combination of functional principles can reach millions. This could derail an exhaustive search for the best possible concepts. So, this work proposes an evolutionary approach to that problem. The result is a framework based on a Genetic Algorithm (GA) that combines the specific properties of the design process with the core of GA, improving this process as a natural evolution.

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.

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.

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.

The aim of this paper is to disclose the new research developments and the results from the systematization of experience and user interaction with the Inspaedia (a new web knowledge " Agora "), to inspire a dynamic, collaborative, and interactive intelligence among the inspaediers. We will explain in detail and describe the design process and discuss the ultimate design interaction concept and development regarding (almost everything about) simplicity and playfulness of the inspaediers' experience to transform relevant information (related > mean-full > useful) in productive knowledge (inspiration > insight > foresight) in a very easy and quick way (usability: learnability; understandability; operability; attrac-tiveness…), with a smile in the face (satisfaction) and a wow in the mind (or in the soul).

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.

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.

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.

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