Mestrado em Física

URI Permanente para esta coleção

http://repositorio.ufes.br/handle/10/17494

Nível: Mestrado Acadêmico
Ano de início: 1992
Conceito atual na CAPES: 4
Ato normativo: Parecer CES/CNE nº 487/2018, homologado pela Port. MEC 609, publicado no DOU em 18/03/2019.
Periodicidade de seleção: Semestral
Área(s) de concentração: Física
Url do curso: https://fisica.ufes.br/pt-br/pos-graduacao/PPGFis/detalhes-do-curso?id=1508

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Navegando Mestrado em Física por Autor "Alves, Klinger Marcos Barbosa"

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    Estudo de efeitos dinâmicos até o início da fratura frágil
    (Universidade Federal do Espírito Santo, 2007-10-29) Vassem Júnior, Arnobio Ignacio; Emmerich, Francisco Guilherme; Mendes Filho, Josué; Cunha, Alfredo Gonçalves; Alves, Klinger Marcos Barbosa
    In this work it ismade the experimental study of dynamic effects to the beginning of the fragile fracture, being used anapparatus that simulates atwo-dimensional crys-tallinestructure, in the which is possible to accomplish reversible experiments of frac-ture. The apparatus reproduces atomistic characteristics and it is formed quadrupolar magnets in the roleof unitary cells. That experiment is important because the obser-vation in-locoof the area at the beginning of the fracture it is not trivial. With the ob-jective of analyzing the dynamic effects in full detail until the beginning of the rupture, a system of image observation was developed in which was possible to obtain digital recordings with rates of the order of hundreds of pictures persecond. During the ex-ecution of the experiments, they were applied mechanical disturbances to the sys-tem. Each disturbance generated a harmonic oscillation that was filmed with the de-veloped equipment. The videos were analyzedpicture bypicture and with these data,graphs of the oscillation widthin function of the time were tracedand were observed picks and valleysthat decline exponentially. Starting from these graphs they were obtained the oscillation frequencies for each configuration of applied tension. This way it was obtained the equivalent constant of spring of the system. A peculiar beha-vior was also observed where a transienthappens before the first valleyis obtained. The mounted equipment was shownefficient for the purpose that was idealized and also for other applications involving mechanical oscillations and fracture dynamics, as the propagation of cracks, in materials of module of elasticity relatively low as the employed solid in this work
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    O "V" de Gowin no laboratório estruturado de Física : um estudo exploratório em uma disciplina de Física Experimental da graduação em Física
    (Universidade Federal do Espírito Santo, 2010-03-22) Maciel Junior, Paulo de Oliveira; Silva, Laércio Evandro Ferracioli da; Larica, Carlos; Alves, Klinger Marcos Barbosa; Gomes, Thiéberson da Silva
    This exploratory study shows results on the investigation of the use of Gowin's Epistemological “V” in an Experimental Physics discipline in the Physics degree at the Federal University of Espírito Santo. For the development of this study, the implantation of the “V” by Gowin was structured in the Experimental Physics I discipline for the Educator / Degree and Researcher / Bachelor of the New Curriculum of the Physics Course at UFES. A script was used on the use of Gowin's "V" in Experimental Physics and the scripts of the experiments carried out in the discipline. The students produced a “V” by Gowin for each experiment, with the objective of explaining the structure of the experiment, that is, what are the Basic Research Questions related to the objectives of the experiment; what the Conceptual Domain consists of, that is, the Principles & Laws, the Hypotheses and the Concepts involved in the experience; what are the Events held to promote observations and data collection of the experiment; what is the Methodological Domain used, that is, what are the Records of Events, the necessary Transformations, the Results of these Transformations and the possible Interpretations from these Results; what are the Answers to the Basic Research Questions proposed and; what is the relevance of these Answers and of the entire experiment studied. To analyze the Gowin "V" s produced, evaluation criteria were used based on parameters that value the articulation of the "V" aspects. With the conclusion of the study, it was possible to analyze the skills and difficulties presented by the students with the implantation of Gowin's “V” in Experimental Physics. It was also possible to indicate contributions for the scripts delivered to students in the Experimental Physics discipline. And finally, an analysis was carried out on the evaluation criteria used in this study