Výsledky vyhledávání - "Sidney Leal da Silva"

Akademický článek

Use of an automatic device for the determination of mechanical properties on photoelastic samples of small dimensions

Autor: Felipe Maia Prado, Daniel José Toffoli, Sidney Leal da Silva

Publikováno v: Revista Brasileira de Ensino de Física, Vol 42 (2020)

Abstract Photoelastic materials and Photoelasticity have been very effective in the study of the effects of stress and strain in materials such as iron, steel, concrete, etc. However, mainly because of human interaction, systematic errors are introdu

Externí odkaz: https://doaj.org/article/9f03e06ab4054e2e99fee88cfd1d3ae4

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Dissertation/ Thesis

Estudo quantitativo de tensões em amostras fotoelásticas por meio de Holografia Digital

Autor: Sidney Leal da Silva

Publikováno v: Biblioteca Digital de Teses e Dissertações da USPUniversidade de São PauloUSP.

A Holografia Digital (HD) é uma ferramenta acessível, rápida e eficiente para análise de efeitos mecânicos em materiais fotoelásticos. Esses materiais apresentam a propriedade da dupla refração, ou birrefringência, quando submetidos a esfor�

Externí odkaz: http://www.teses.usp.br/teses/disponiveis/43/43134/tde-22102016-154751/

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Dissertation/ Thesis

CARACTERIZAÇÃO ESPECTROSCÓPICA DE VIDROS ALUMINOSSILICATOS E FLUORFOSFATOS DOPADOS COM TÉRBIO (Tb3+)

Autor: Sidney Leal da Silva

Publikováno v: Biblioteca Digital de Teses e Dissertações da USPUniversidade de São PauloUSP.

Utilizando amostras de vidro aluminossilicato, 21SiO2·9Al2O3·58Tb2O3·4,0MgO·3,0B2O3·2,0ZnO·1,0Sb2O3 (mol%) e fluorfosfato, 7,49NaPO3·16,45MgF2·16,38CaF2·17,66SrF2·11,63BaF2·30,39AlF3 (mol%) adicionado de 8Tb2O3 e 0,5Ce2O (mol), foram reali

Externí odkaz: http://www.teses.usp.br/teses/disponiveis/43/43134/tde-22112016-171708/

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Determination of the mean relative photoelastic dispersion factor by means of photoelasticity

Autor: Karen Ayumi Ueta Utiyama, Felipe Cremasco de Menezes, Marcus Vinicius Catarina, Daniel Rodrigues de Sousa, Sidney Leal da Silva

Publikováno v: Revista Brasileira de Física Tecnológica Aplicada; v. 9, n. 2 (2022)
Revista Brasileira de Física Tecnológica Aplicada
Universidade Tecnológica Federal do Paraná (UTFPR)
instacron:UTFPR

This work proposed to determine the mean dispersion factor, < αC > , which is related to the relative photoelastic dispersion coefficient of a photoelastic material, subjected to consecutive external stresses, by means of a direct computational meth

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6cd18361a3419927d2e779f4fe7a3658
https://doi.org/10.3895/rbfta.v9n2.15143

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Characterization of the photoelastic dispersion coefficient using polarized digital holography

Autor: Sidney Leal da Silva, Felipe Maia Prado, Daniel José Toffoli, Niklaus Ursus Wetter

Publikováno v: Journal of the Optical Society of America A. 40:C108

The photoelastic dispersion coefficient represents the relationship between stress and the differences in refractive indices in a birefringent material. However, determining the coefficient using photoelasticity is challenging, as it is difficult to

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::4be5bce54f246bb5537f88fa0647ba8a
https://doi.org/10.1364/josaa.482543

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Evaluation of the quality of the shielded metal arc welding process using speckle interferometry

Autor: Sidney Leal da Silva, Daniel José Toffoli, Felipe Maia Prado

Publikováno v: Revista Brasileira de Física Tecnológica Aplicada; v. 7, n. 1 (2020)
Revista Brasileira de Física Tecnológica Aplicada
Universidade Tecnológica Federal do Paraná (UTFPR)
instacron:UTFPR

Speckle, which is a branch of optics that studies the interference pattern caused by the incidence of coherent light in a material’s surface, has some optical techniques and methods that can be successfully applied to determine properties of materi

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e0738c3c36a005f38025154570340a18
https://periodicos.utfpr.edu.br/rbfta/article/view/11062

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Measuring photoelastic dispersion coefficients in material samples with digital holography

Autor: Sidney Leal da Silva, Daniel José Toffoli, Felipe Maia Prado, Niklaus Ursus Wetter

Publikováno v: Practical Holography XXXIV: Displays, Materials, and Applications.

Polarized Digital Holography (PHD) is a fast and efficient tool for analyzing mechanical effects in materials. Especially when the task requires non-invasive techniques that do not damage the material in study, the use of PHD has great perspectives.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::3aa200d7cf28659c3ba7e3ca0c81ae59
https://doi.org/10.1117/12.2544874

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Reliability analysis using experimental statistical methods and AIS: application in continuous flow tubes of gaseous medium

Autor: Fábio Roberto Chavarette, Lakshmi Narayan Mishra, Vishnu Narayan Mishra, Sidney Leal da Silva, Roberto Outa, Aparecido Carlos Gonçalves, Alan Rodrigo Panosso

Publikováno v: Scopus
Repositório Institucional da UNESP
Universidade Estadual Paulista (UNESP)
instacron:UNESP
Acta Scientiarum. Technology; Vol 43 (2021): Publicação contínua; e55825
Acta Scientiarum. Technology; v. 43 (2021): Publicação contínua; e55825
Acta scientiarum. Technology
Universidade Estadual de Maringá (UEM)
instacron:UEM

Made available in DSpace on 2022-05-01T11:23:37Z (GMT). No. of bitstreams: 0 Previous issue date: 2021-08-20 Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) The motivation for the development of this work arose from the observation

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::82275ca5fb24392b9cdb3feea6195f0a
https://doi.org/10.4025/actascitechnol.v43i1.55825

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Estudo da secagem de materiais por meio de speckle dinâmico

Autor: Daniel José Toffoli, Henrique Trajano de Araujo, Sidney Leal da Silva, Augusto Cesar Santos

Publikováno v: Revista Brasileira de Física Tecnológica Aplicada; v. 4, n. 2 (2017)
Revista Brasileira de Física Tecnológica Aplicada
Universidade Tecnológica Federal do Paraná (UTFPR)
instacron:UTFPR

Neste trabalho, utilizou-se Speckle dinâmico para estudar o tempo médio de secagem das amostras corretivo líquido, cola de madeira e cola branca. Os padrões de interferência foram obtidos por reflexão e capturados em uma câmera digital após o

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ae9551b020fbb27ea6affcec2e5092f8
https://periodicos.utfpr.edu.br/rbfta/article/view/7159

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CARACTERIZAÇÃO ESPECTROSCÓPICA DE VIDROS ALUMINOSSILICATOS E FLUORFOSFATOS DOPADOS COM TÉRBIO (Tb3+)

Autor: Sidney Leal da Silva

Publikováno v: Biblioteca Digital de Teses e Dissertações da USP
Universidade de São Paulo (USP)
instacron:USP

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c99d7978c22e2c313ec65067fcac7caa
https://doi.org/10.11606/d.43.2016.tde-22112016-171708

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