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COB226 MÉTODO KELLER EN MECÁNICA BÁSICA Y DE TECNOLOGÍA DE MECÁNICA INDUSTRIAL
Alexis Tejedor de León
Vicedecanato de Investigación, Postgrado y Extensión; Facultad de Ingeniería Mecánica
Universidad Tecnológica de Panamá Apartado Nº 64 Panamá, E- mail atejedor@fim.utp.ac.pa.
The traditional system in college education, specifically in Mechanical Engineering, is not appropiate to deal with the ever increasing amount of knowledge. In this regard, and as an alternative, the Keller Methods can be considered as an innovation to the education system, based on independent learning; due to the fact that until now changes in higher education have been applied to a curse in Basic Mechanics in an Industrial Mechanics Associate Degree Program at the Universidad Tecnológica de Panamá, Centro Regional de Veraguas. This paper discuses about its implementation, and after two years of application, a comparative study on the academic performance of the students that were under the Keller Method and those under the traditional method is made; taking as a reference those curses with requeriments for registration.
Keywords: Higher education, Independent learning, Academic Methodoly, Methods of learning, Academic performance
COB303 ANÁLISE DE REDES DE TUBULAÇÃO: DESENVOLVIMENTO DE INSTALAÇÃO EXPERIMENTAL E MODELAGEM MATEMÁTICA / ANALYSIS OF PIPELINE NETWORKS: DEVELOPMENT OF EXPERIMENT AND MATHEMATICAL MODELING
Jorge Andrey Wilhelms Gut, Tah Wun Song & José Maurício Pinto
Departamento de Engenharia Química, Escola Politécnica - USP - CEP 05508-900 São Paulo, SP Brasil - E-mail: jompinto@usp.br
An experiment on Fluid Mechanics for educational purposes regarding pipeline flows and pump association is designed. Also, a mathematical model for steady-state, isothermal flow of an incompressible fluid is developed. The model is especially suitable for extensive pipeline networks. The solution method for the system comprised of non-linear algebraic equations is based on the quasi-linearization technique. Simulation results are discussed.
Keywords: fluid mechanics, pipeline networks, educational experiment, pipeline modeling, quasi-linearization / mecânica dos fluidos, redes de tubulação, experimento didático, modelagem de redes de tubos, quasi-linearização
COB407 SISTEMAS ESPECIALISTAS - ESPECIFICAÇÃO DE CORRENTES DE ROLOS / EXPERT SYSTEMS - SELECTION OF ROLLER CHAInS
Sandim, Christiane L.
Programa de Engenharia de Produção - PEP - UFRJ
de Marco Filho, Flávio
Departamento de Engenharia Mecânica - DEM - UFRJ, CEP 21945-970 - Caixa Postal: 68503, Brasil - E-mail: flavio@serv.com.ufrj.br
Our intention was to help the mechanical engineering designer in the specification of machine components and diminish the time expended on machine design, we succeeded in elaborating an expert computational system for the evaluation and selection of Roller Chains. The algorithm was based on recomendations and specifications found in the IBAF chain manufacturer catalog.
Keywords: Palavras chaves: Correntes de Rolos, Sistemas Especialistas, Elementos de Máquinas, Projeto de Máquinas/Roller Chains, Expert Systems, Machine Elements, Machine Design.
COB408 O ENSINO DA CIÊNCIA E ENGENHARIA DE MATERIAIS NOS CURSOS DE GRADUAÇÃO EM ENGENHARIA MECÂNICA / THE TEACHING OF MATERIALS SCIENCE AND ENGINEERING IN THE MECHANICAL ENGINEERING COURSES
Cícero murta Diniz Starling, Maria Teresa Paulino Aguilar & Paulo Roberto Pereira Andery
Departamento de Engenharia de Materiais e Construção - Escola de Engenharia da UFMG
R. Espírito Santo, 35 - Belo Horizonte - 30160-030 - Belo Horizonte - MG - E-mail: demc@cce.ufmg.br
This work presents general concepts and viewpoints regarding teaching of Materials Science and Engineering for Mechanical Engineering courses. Some trends of the Materials Engineering area are pointed out, focusing aspects like basic programs, compatibility between theoretical and practical approaches, as well as integration of laboratory experiences and lectures. Some experiences of the authors in teaching Materials Science and Engineering are briefly discussed.
Keywords: Materials Science Teaching, Mechanical Engineering Curricula - Ensino de Ciência dos Materiais, Currículo de Engenharia Mecânica
COB424 Ambiente Integrado para treinamento em controle de sistemas dinâmicos a eventos discretos / Integrated environment for training on control of Discrete Event Dynamic systems
Cristina Toshie Motohashi M. & Paulo
Eigi Miyagi
Departamento de Engenharia Mecânica/Mecatrônica, Escola
Politécnica da USP - CEP:05508-900, São Paulo, SP, Brasil
E-mail: cristm@usp.br pemiyagi@usp.br
In academic environment, generally, dynamic systems are approached from the point of view of continuos variable dynamic systems (CVDS). Only in very special cases, the other class of dynamic systems, i.e., discrete event dynamic systems (DEDS) are considered. However, most of the large-scaled and complex man-made systems requires control systems based on the concept of DEDS. One of the problem is the lack of an effective tool for assimilation of fundamental concepts involved in DEDS. Without a practical experience it is very difficult to understand the idea of "events", "conditions", "control object", "control realization device", etc. The existing didactic simulators and systems with programmable controllers are very limited to this goal because of their particularities. These tools do not consider a methodology for design of whole control systems neither a general technique to describe the control strategies. Therefore, we introduce an Integrated Environment for teaching and training of control systems for DEDS. The case of a manufacturing cell is used to exemplify the task of validation of control strategies developed in a systematic approach based on Production Flow Schema/Mark Flow Graph (PFS/MFG) technique.
Keywords: Discrete event dynamic systems, control system design, computer aided training system, PFS/MFG Methodology
Sistemas dinâmicos a eventos discretos, projeto de sistemas de controle, ferramenta para treinamento auxiliado por computador, metodologia MFG/PFS.
COB446 USO DA SIMULAÇÃO NO ENSINO DE ENGENHARIA / USE OF SIMULATION FOR ENGINEERING TEACHING
Elídio de Carvalho Lobão, Arthur José Vieira Porto
Departamento de Eng. Mecânica, Escola de Engenharia de São Carlos - EESC/USP
Caixa Postal 359, CEP 13560 - 970, São Carlos/SP, Brasil
The economic globalization brings a dramatic increase in the competition among companies. It emerges then the necessity to search higher competitive levels with the remodelling of the productive systems (with the substitution of obsolete equipment and acquisition of more labour qualification). These two factors are deeply correlated since new equipment is more complex, and handles a larger number of variables, demanding then, more qualified labour. This requered qualification of labour demands news methods of teaching and training to extend the escope of traditional methods, and simulation arises as a powerful tool for this goal. It allows the knowledge transmission in a richer and more interactive manner than expositive methods, with reduced cost when compared with real systems. It also prevents people and equipment from being exposed to some risks that normally are present at learning stage. This works aims at standing out the possibilities of improvement of the teaching process in engineering within academic and industrial environment using of simulation resources. Also comments on some cases where the simulation is used with success to teaching and training are made and, finally, a prognostic with the trends in development of simulators systems is presented.
Keywords: Simulação, Ensino e Treinamento, Sistemas Especialistas, Realidade Virtual. - Simulation, Teaching and Training, Expert Systems, Virtual Reality.
COB462 METODOLOGIA PARA ANÁLISE DA DINÂMICA NÃO-LINEAR DE SISTEMAS DE MÚLTIPLOS CORPOS - APLICAÇÃO A SATÉLITES / METHODOLOGY FOR ANALYSING THE DYNAMICS OF NONLINEAR MULTIBODY SYSTEMS - APPLICATIONS TO SATELLITES
Ilmar Ferreira Santos, Alexandre Puls Ferretti & Rodrigo de Carvalho
Dep. de Projeto Mecânico, Fac. de Engenharia Mecânica - UNICAMP
CEP 13083-970 Campinas, Brasil - E-mail: ilmar@dpm.fem.unicamp.br
This work gives a pratical contribuition to the Dynamics of Nonlinear Multibody Systems. A methodology basead on Dynamics' principles and axioms formulated by Newton-Euler-Jourdain and computer animation techniques are presented with application to Satellite Dynamics. The main goal of combining animation techniches and dynamical simulation is to become easier understanding nonlinear motions and trajectories. Numerical results are presented in this paper in two diferents ways: graphically, illustrating the trajectories describes by the center of each satellite's face and by computer animations. Such animation are able to illustrate the criation of the mentioned trajectories. For qualitative experimental verifications of the nonlinear dynamics of satellites with internal rotors, a prototype is designed. It is mounted on a special support which allows three consecutives rotations (Kardan's angles). By means of this support it is possible to simulate phisically the satellite's attitude in a point of its stable orbit. This metodology based on dynamical modelling, numerical simulations techniques and prototype designing results in a very e#cient tool for engineering education.
Keywords: Methodology/metodologia, multibody dynamics/dinâmica de múltiplos corpos, nonlinear systems/sistemas não lineares, satellite/satélite, computer animation/animação gráfica.
COB470 O Ensino de Metodologias de Projetos para Alunos de Graduação / Teaching Design Methodology to undergraduated students
Cristiano Machado, Franco G. Dedini & Katia L. Cavalca
Departamento de Engenharia Mecânica, Faculdade de Engenharia Mecânica - Unicamp - Campinas
CEP 13083-970 Campinas, Brasil - E-mail: juca@fem.unicamp.br
This paper describes the work done to improve the formation of Unicamp’s Mechanical Engineer. The development over three years has proved that a mechanical design course can provide to students a global vision of courses administrated during their formation. It was made a evaluation of requirements of a mechanical design discipline to undergraduate students.
Keywords: Engineering Teach, Engineer Formation, Design Methodology / Ensino de Engenharia, Educação do Engenheiro, Metodologias de Projeto.
COB653 IMPLEMENTAÇÃO DE UMA SERVOVÁLVULA E UM TÚNEL DE VENTO PARA ANÁLISE DE CONTROLE EM LABORATÓRIO/ IMPLEMENTATION OF A SERVO-VALVE AND A WIND TUNNEL TO LABORATORY CONTROL ANALYSIS
César H. F. Amendola, Fábio O. de Araújo, Henrique Simas & Antonio A. R. Coelho
Departamento de Automação e Sistemas - Centro Tecnológico - UFSC
C. P. 476 - CEP 88040-900 Florianópolis, Brasil - E-mail: {amendola,ornellas,simas,aarc}@lcmi.ufsc.br
This paper analyzes and discusses the implementation of a servo-valve and a wind tunnel process in experiments with conventional control like PI, PID and self tuning controllers in order to study practical aspects of control theory. A comparative study of the applicability of each controller was carried out analyzing their dynamics and non-linear characteristics.
Keywords: Laboratory education, conventional control, digital control, estimation parameters, self-tuning control, process equipment. / Ensino em laboratório, controle convencional, controle digital, estimação de parâmetros, controle auto-ajustável, equipamento de laboratório.
COB845 A UTILIZAÇÃO DA REALIDADE VIRTUAL NA ENGENHARIA MECÂNICA/ THE UTILIZATION OF VIRTUAL REALITY IN MECHANICAL ENGINEERING
Antonio Valerio Netto, Arthur J.V. Porto & Jandira G. Palma
Dept. de Engenharia Mecânica, Escola de Engenharia de São Carlos - EESC/USP
Av. Dr. Carlos Botelho, 1465 Vila Pureza CEP 13560-250 São Carlos, SP - Brasil
E-mail: avnetto@sc.usp.br ou ajvporto@sc.usp.br
The virtual reality is an advanced interface technique, in which the user can immerge, navigate and interact in a synthetic tridimensional computer generated environment. Through virtual reality software, it is able to shape mechanical apparatus, vehicles and devices, simulating the real behavior of the equipment. This diminishes costs and development cicles and allows training sessions with the virtual product. The virtual reality aids the CAD development system; the designer can interact, manipulate and validate his workpiece with the facilities provided by these tools. Following the idea of modelling and simulation, the new trend of simulators points at interactive and intelligent systems, in which will be widely used the virtual reality technique, allowing the user not only to interact with the system’s components during his "virtual function", but to immerge in the model giving more realism to the system and allowing a richer exploration of it. The virtual reality can also be applied on undergradute a courses helping in lectures on utilization of last generation machine tools, which are expensive and large and are not usually available at the universities.
Keywords: Virtual Reality, Simulation, Modelling, Virtual Manufacturing and Virtual Reality Software.
Realidade Virtual, Simulação, Modelamento, Manufatura Virtual e Softwares de Realidade Virtual.
COB867 RESISTÊNCIA DOS MATERIAIS, O NASCIMENTO DE UMA DISCIPLINA / STRENGTH OF MATERIALS, THE BIRTH OF A DISCIPLINE
Luiz Teixeira do Vale Pereira
Departamento de Engenharia Mecânica, UFSC, CEP 88.040-900, Florianópolis, Brasil - E-mail: teixeira@emc.ufsc.br
In this paper the bases of the Strength of Materials are discussed. To this aim, the epistemological foundations of this science are analyzed, especially in Da Vinci´s and Galilei´s works, when an understanding of the discipline´s constitution is attempted. Its birth is associated with an intensified relationship between theory and practice, sustained by laboratory-made idealizations of structural elements. These idealizations, by its turn, would be engaged with the very frame of the engineer´s profession. Engineering is understood as a body of ideas, compromised with paradigms which orients the actions of its practitioners.
Keywords: Strength of Materials; History of engineering; Epistemology / Resistência dos Materiais; História da engenharia; Epistemologia.
COB869 OBSERVAÇÃO E INTERPRETAÇÃO EM METALOGRAFIA / OBSERVATION AND INTERPRETATION IN METALLOGRAPHY
Ingeborg Kühn A., Luiz Teixeira do Vale Pereira & Walter A. Bazzo
Departamento de Engenharia Mecânica, UFSC
88.040-900, Florianópolis, Brasil - E-mail: ingeborg@emc.ufsc.br, teixeira@emc.ufsc.br, wbazzo@emc.ufsc.br
In this work the argument that observation and interpretation in the technical area could be uncoupled, conceptually and in fact, is contested. The inter-relationships between these two actions are discussed, in order to question the researcher’s supposed neutrality in face of his work. Some metallographic and optical illusion images are analyzed in order to examplify the impossibility of this disengagement. The theoretical reference adopted includes the metallography specialist as belonging to a professional group aligned with steering paradigms of theoretical and practical procedures.
Keywords: Metallography; Professional behaviour; Paradigms; Observation-interpretation / Metalografia; Comportamento profissional; Paradigmas; Observação-interpretação.
COB870 SOBRE A FORMAÇÃO DE PROFESSORES DE ENGENHARIA / ABOUT THE FORMATION OF ENGINEERING TEACHERS
Walter Antonio Bazzo, Luiz Teixeira do Vale Pereira
Departamento de Engenharia Mecânica - USFC
CEP 88040-900, Florianópolis, Brasil - E-mail: wbazzo@emc.ufsc.br, teixeira@emc.ufsc.br
The purpose of this paper is to discuss the formation process of engineering teachers, pointing out some solutions for a problem that is becoming serious in this field. In the essay we assume that the present situation of engineering teaching in Brazil is demanding a look towards quality enhancement. The understanding that the possession of technical knowledge of a profession is a sufficient premisse to transform a legally graduated individual in a teacher is criticized. A formation process of egineering teachers for the technical field which tries to conciliate needed technical-professional qualifications with didactic-pedagogical ones is proposed.
Keywords: Engineering teaching; Formation of teacher; Didactic. / Ensino de engenharia; Formação de professores; Didática;
COB942 CAPACITAÇÃO DE PESSOAL PARA O PROCESSO DE DESENVOLVIMENTO DE PRODUTOS/ PERSONNEL QUALIFICATION FOR PRODUCT DEVELOPMENT PROCESS
Adriana Faro da Silveira Aguiar, Henrique Rozenfeld & Eduardo de Senzi Zancul
Departamento de Engenharia Mecânica - Escola de Engenharia de São Carlos - USP
Av. Dr. Carlos Botelho, 1465 –CEP: 13560-250 - São Carlos, SP – E-mail: asaguiar@ sc.usp.br
Nowadays the formation of people for working with product development must be one of the main concerns of the enterprises. This is necessary to get the benefits of the application of Concurrent Engineering techniques and new computer tools and surpass the challenges of a changing global market, where product cycle is always shorter. This article presents a new profile for the professional working in product development and a new education method that has been introduced at Model Integrated Factory (FIM). This new education method emphasizes the use of active didactics techniques in order to get the formation of people for working with product development.
Keywords: Education Methods, Product Development, Teamwork, Concurrent Engineering.
Métodos Educacionais, Desenvolvimento de Produtos, Trabalho em Equipe, Engenharia Simultânea
COB968 A SISTEMÁTICA DE AVALIAÇÃO NO ENSINO DE PROJETO DE MÁQUINAS / EVALUATION PROCEDURES IN MACHINE DESIGN TEACHING
Nicola Getschko
Depto. de Engenharia Mecânica da Escola Politécnica - USP - CEP 05508-900, Av. Prof. Mello Moraes, 2231, Cidade Universitária - São Paulo - SP, Brasil, Depto. de Matemática - Centro das Ciências Exatas - PUC-SP - CEP 01303-050, Rua Marques de Paranaguá, 111 - São Paulo - SP, Brasil, E-mail: ngetschk@usp.br, nicolag@exatas.pucsp.br
This paper discuss some important aspects related to Machine Design disciplines evaluations. Former evaluation methods and statements are compared with some new hypothesis and concepts. In order to make a case study, a brief description of the disciplines PMC 201 - Introduction to Machine Design and PMC 205 - Construction Machine Elements I of the Mechanical Eng. Dept of the Polytechnic School - University of Sao Paulo , is presented. The evaluation systems analysis is made by means of a statistical approach, based on four year data. The results confirm the main suggested hypothesis.
Keywords: machine design, evaluation, mechanical engineering, education, statistics / projeto de máquinas, avaliação, engenharia mecânica, educação, estatística.
COB1005 LEVANTAMENTO DA CURVA DE PRESSão DE VAPOR DA ÁGUA – Experimento Didático / vapor-pressure curve determination
Vicente de P. Nicolau, William A. Lehmkuhl & José A. Bellini da Cunha Neto
LMPT- Departamento de Engenharia Mecânica – UFSC, 88010-970 - Florianópolis - SC - Brasil- E-mail: vicente@lmpt.ufsc.br
This paper describes a quite simple experimental set-up which can be used on undergraduate studies in thermodynamics. It deals with .vapor-liquid phase equilibrium. The substance used is water, placed in a hermetic container. This system can be heated to 100° C and cooled to 20° C. Acquiring temperature and pressure values during the cooling process, the vapor-pressure curve can be plotted and compared with published data in the area.
Keywords: Pressão de vapor, curva de saturação, equipamento didático, termodinâmica, saturation curve.
COB1176 SIDAM - UM SISTEMA INTELIGENTE PARA DIAGNÓSTICO DE AVARIAS EM MOTORES
António José Ferreira da Silva & Fernando José Ferreira
Departamento de Engenharia Mecânica, Instituto Superior de Engenharia do Porto, Rua de S. Tomé, 4200 Porto, Portugal - Email: fsilva@dem.isep.ipp.pt, brasil@dem.isep.ipp.pt
SIDAM is an Integrated Computer System which includes an Expert System for diagnosis of malfunction engines. SIDAM is under development at Instituto Superior de Engenharia do Porto in cooperation with Salvador Caetano (Portuguese Toyota). The project aim is two fold. It may be used in an industrial environment for diagnosis of malfunction engines and can also be use for didactic purposes in a mechanical engineering laboratory. The system contains a Knowledge Base with information about periodical maintenance and an historical database with the previous cases solved by the system. The data base of solved previous cases is used to collect statistics that guide future diagnosis. It is also possible to simulate the more typical set of electrical and mechanical malfunctions that affect the engines. It is known that any system in this domain has to deal with many different kinds of knowledge and information sources and use different types of inference processes. Artificial Intelligence techniques like Production Rules, Frames, probabilistic and mathematical models are among different knowledge representation formalisms which have been used to encode the domain knowledge. At the moment, project SIDAM is in the testing stage of development.
Keywords: Technology Education, Interactive video, Engine Repair System, Expert System.
COB1383 O Ensino da Engenharia Mecânica Face Aos Processos de Globalização / THE Teching OF Mechanical engineering face the globalization process
Miguel Hiroo Hirata
Programa de Engenharia Mecânica - COPPE/UFRJ – Rio de Janeiro, Brasil
Atualmente: Prof. Visitante na EFEI – Itajuba, MG - E.mail: hirata@poisson.iem.efei.rmg.br
The globalization process induces the necessity of a review in the process and methodology used in every area of human activities. It is urgent a review analysis of all the concepts and methodology in the technology domain with emphasis in the area of specialized human resources; in this area the methodology used in the preparation of engineers deserves a special attention. This paper points to some aspects of fundamental importance such as: the necessity of a multidisciplinary approach in the engineering schools, the necessity of the development of the ability to model engineering problems, the necessity of a scientific versus a technological information oriented approach, etc.
Keywords: Globalization, modelling process, transfer of technology.
COB1422 Medição de Emissividade e de Temperatura sem Contato – Experimento Didático / Emissivity and n0n-contact temperature measurement
Vicente de Paulo Nicolau & Saulo Güths
LMPT- Departamento de Engenharia Mecânica – UFSC, 88010-970 - Florianópolis - SC – Brasil- E-mail: vicente@lmpt.ufsc.br
This paper describes a quite simple experimental set-up which can be used on undergraduate or graduate studies on thermal radiation heat transfer. It deals with non-contact temperature and emissivity measurements at low temperature (ambient to 400 ° C) in the infrared range.
Keywords: Emissividade, temperatura sem contato, equipamento didático, radiação térmica/ emissivity, thermal radiation.
COB1509 Mechatronics, a powerful concurrent engineering framework
Prof. Dr. ir. Hendrik M.J. Van Brussel
Katholieke Universiteit Leuven, Division PMA, Celestijnenlaan 300B, B-3001 Heverlee, e-mail : Hendrik.VanBrussel@mech.kuleuven.ac.be
Mechatronics is emerging as a concurrent-engineering thinking framework in the process of designing complex machines. It is argued that mechatronics can be defined as the science of motion control. The different steps in the evolution from smart machines to intelligent autonomous systems are discussed and illustrated with many examples, mainly taken from the author’s research experience.
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