Strenght Of Materials
Mostrando 1-12 de 28 artigos, teses e dissertações.
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1. Avaliação da eficiência do ácido pirolenhoso no tratamento preservativo de taliscas de bambu gigante contra a deterioração por fungos / Evaluation of pyroligneous acid efficiency on preservative treatment of giant bamboo strips against fungi
O bambu apresenta inúmeras características que o qualificam como um material versátil e que há milhares de anos vem servindo como matéria-prima para diversos fins, fazendo parte da história e da cultura de muitos povos. Muitas pesquisas vêm sendo realizadas acerca da utilização do bambu em setores diversos como da construção civil, movelaria e pro
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 27/05/2011
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2. Utilização de compostos elastoméricos à base de SBR carregados com barita em aventais isolantes de raios X
In this study it was studied the physical-mechanical properties of elastomers based on styrenebutadiene rubber (SBR) with the addition of barite, for application of these compounds in protecting in the shielding against radiation X, for the substitution of aprons form based on elastomer fillered with lead in ergonomic and economically advantageous conditions
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 17/03/2011
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3. Efeito do envelhecimento por ciclagem mecânica ou ciclagem em autoclave na resistência à flexão de cerâmicas odontológicas / Mechanical and autoclave cycling effect on flexural strength of dental ceramics
The aims of this study were: to perform a microestrutural analysis of dental ceramics and correlate the results with the flexural strength obtained; to evaluate two aging process (mechanical cycling and autoclave cycling) on the flexural strength of the materials and to evaluate the specimen configuration (bar or disc) on the flexural strength of mechanical
Publicado em: 2010
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4. CORRELAÇÃO ENTRE GRAU DE CONVERSÃO E RESISTÊNCIA DE UNIÃO DE SISTEMAS ADESIVOS AUTOCONDICIONANTES / CORRELATION BETWEEN DEGREE OF CONVERSION AND BOND STRENGTH OF THE SELF-ETCHING ADHESIVE SYSTEM
Objective: The aim of this study was to analyses the relationship between the degree of conversion of double bonds of self-etching adhesives and microshear bond strength on dentin. Materials and methods: For microshear testing twenty third molar caries free were selected. They had their crowns sectioned longitudinally so as to obtain slices that were randoml
Publicado em: 2010
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5. Síntese e caracterização de macromoléculas do tipo Poli(Ácido carboxílico)-Poli(Eter-poliol) com propriedades termoplásticas e termorrígidas e avaliação de propriedades mecânicas cerâmicos à base de caulim. / Synthesis and characterization of macromolecules of the type of poly (carboxylic acid)-poly(ether polyol) with thermoplastic and thermoset properties and evaluation of mechanical properties of ceramics materials based on kaolin.
Este trabalho apresenta o estudo de um sistema polimérico bi-componente formado por Poli(Ácido carboxílico)-Poli(Eter-poliol), constituído primariamente de um polímero acrílico polimerizado pelo processo de polimerização em solução aquosa por mecanismo de radicais livres ao qual foi adicionado seqüencialmente, um Poli(Eter-poliol), ambos de baixo
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 27/08/2009
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6. Influence of an experimental solution for complete denture cleaning on the physical properties of acrylic resins, artificial teeth and soft liners / Influência de uma solução experimental para higiene de próteses totais nas propriedades físicas e mecênicas de resinas acrílicas, dentes artificiais e reembasadores resilientes
This study evaluated conventional (RAC) and microwave-polymerized (RAM) acrylic resins, artificial teeth (Vipi, Biolux and Trilux) and soft liners (Elite Soft and Mucopren Soft) after immersion in 3 solutions: water, sodium hypochlorite 1%; experimental solution of Riccinus communis (RC). The Knoop hardness and color alteration of resins, and shore A hardnes
Publicado em: 2009
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7. Ensaios uniaxiais e biaxiais para avalição de criterio de resistencia de materiais anisotropicos aplicado a madeira / Uniaxial and biaxial tests for avaliation of failure criterion of anisotropic material applied to wood
The completion of the uniaxial and biaxial tests permits a better understanding of the mechanical behavior of a material that has main failure directions and it is undoubtedly a method that researchers identified to achieve consistent results with the actual situation that a particular structure presents. This study aimed at studying the strength criterion p
Publicado em: 2009
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8. Effect of accelerated ageing on the permanet deformation and tensite bond strenght of auto-polymerizing soft dentures liners / Efeito de tempos de simulação do intemperismo natural na deformação permanente dos materiais reembassadores resilientes e na resitencia a tração da sua união com a resina acrilica
This study aimed to evaluate the effect of different times of accelerated ageing over the properties of permanent deformation and tensile bond strength of two soft liners used on prostheses relining. The soft liners studied were auto-polymerizing and acrylic resin and silicone based. The materials were processed according the manufacturers instructions. The
Publicado em: 2009
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9. Clinical and laboratory evaluation of metallic brackets bonded with orthodontic composites / Avaliação clinica e laboratorial da colagem de braquetes metalicos com compositos ortodonticos
The aim of this study was to assess clinically and laboratory the bracket failure rate and shear bond strength of metallic brackets bonded with orthodontic composites. The in vivo study consisted of 20 patients aged between 10.5 to 15.1 years old who had sought corrective orthodontic treatment. Brackets were bonded of the second premolar - second premolar to
Publicado em: 2009
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10. Painel de bambu laminado colado estrutural / Bamboo structural glued laminated panel
The search for products manufactured with renewable raw material which can be produced through an industrialization which does not cause environmental impacts led this research work to considerate the use of bamboo culm as woody material to manufacture structural panels that can be used as construction material. Bamboo presents some advantages over other mat
Publicado em: 2008
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11. Estudo Laboratorial da Viabilidade do uso de Fibras de Coco em Misturas AsfÃlticas do Tipo SMA / STUDY OF THE VIABILITY OF THE STAPLE FIBRE USE OF COCONUT IN ASPHALT MIXTURES SMA
The technology of asphalt materials and mixtures evolves very in these last three decades in the Europe and the North America. To the rolling layer, it comes growing the use in developed countries of more resistant and more durable asphalt mixtures, being that some of these solutions involve the job of discontinous graduation, as the SMA (Stone Matrix Asphal
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 28/08/2007
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12. Influence of the final temperature of investment healting on the tensile strength and Vickers hardness of CP Ti and Ti-6Al-4V alloy
The aim of the work was to evaluate the influence of the temperature of investment healting on the tensile strength and Vickers hardness of CP Ti and Ti-6Al-4V alloy casting. Were obtained for the tensile strength test dumbbell rods that were invested in the Rematitan Plus investment and casting in the Discovery machine cast. Thirty specimens were obtained,
Journal of Applied Oral Science. Publicado em: 2007-02