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Previous issue date: 2012-08-10 / Conselho Nacional de Desenvolvimento Cient?fico e Tecnol?gico / This study aims to evaluate the mechanical properties of polymer matrix
composites reinforced with sisal fabric bidirectional tissue (Agave sisalana,) and E-glass
fibers, containing the following configuration: a polymer matrix hybrid composite
(Polyester Resin orthophalic) reinforced with three (3) layers of glass fibers and
alternating-2 (two) layers of bidirectional sisal fabric, and finally a composite of
polymer matrix reinforced with five (5) layers of glass fiber mat-type E. For this
purpose as first step, the preparation of by sisal, since they are not on the market. The
composites were made by manual lamination (Hand lay-up) and evaluated for tensile
properties and three point bending both in the dry, and wet conditions aswele as
immersed in oil. Macroscopic and microscopic characteristics of the materialsweve
awalysed, after the completion of the mechanical tests. After the studies, it was proven
that the sisal fiber decreases the tensile stiffness of the material above 50% for both
situations studied the tensile strength of the material decreases by approximately 40%
for the cases mentioned, and when compared to the specific strength stiffness values
drop to 14.6% and 29.02% respectively for the dry state only. Constants for bending the
values were are to approximately 50% to 25% for strength and stiffness of the material
for the cases dry, wet and immersed in oil. Under the influence of tension fluids do not
interfere in the stiffness of the material for the bending tests, the same does not occur
with the resistance, and these values are modified only in the cases stiffness and flexural
strength / Este trabalho tem como objetivo avaliar as propriedades mec?nicas de comp?sitos
de matriz polim?rica refor?ados com tecidos bidirecionais de sisal (Agave Sisalana,) e
fibras de vidro E, contendo estes materiais a seguinte configura??o: um comp?sito
h?brido de matriz polim?rica (Resina Poli?ster Ortoft?lica) refor?ado com 3 (tr?s)
camadas de fibras de vidro e intercalando as 2 (duas) camadas de tecido bidirecional
de sisal, e por fim um comp?sito de matriz polim?rica refor?ado com 5 (cinco) camadas
de manta de fibras de vidro do tipo E. Para tanto teve se como primeira etapa a
confec??o dos tecidos de sisal, j? que estes n?o se encontram no mercado. Os
comp?sitos foram confeccionados de acordo com o processo de lamina??o manual
(Hand lay-up) e avaliadas as propriedades de tra??o uniaxial e flex?o em tr?s pontos do
material tanto em estado seco, como para o material imerso em ?gua destilada e imerso
em petr?leo e as caracter?sticas macrosc?picas e microsc?picas dos materiais ap?s a
realiza??o dos ensaios mec?nicos, t5amb?m j? realizados. Ap?s a realiza??o dos estudos
foi observado que a fibra de sisal diminui a rigidez do material ? tra??o acima de 50 %
para ambas as situa??es estudadas, a resist?ncia ? tra??o do material diminui em
aproximadamente 40% para os casos citados, sendo que quando comparado ? resist?ncia
e rigidez especificas esses valores caem para 14,6% e 29,02 % respectivamente s? para
o estado seco. Quando observados as constantes para flex?o esses valores passam a
serem de aproximadamente 50 % para a resist?ncia e 25% para a rigidez do material
para os casos secos, ?mido e imerso em petr?leo
| Identifer | oai:union.ndltd.org:IBICT/oai:repositorio.ufrn.br:123456789/15698 |
| Date | 10 August 2012 |
| Creators | Silva, Camila Cruz da |
| Contributors | CPF:02306444498, http://lattes.cnpq.br/1042806990155996, Ladchumananandasivam, Rasiah, CPF:18222161415, http://lattes.cnpq.br/8553209522282182, Silva, Luiz Claudio Ferreira da, CPF:79098630472, http://lattes.cnpq.br/3812459994118013, Amorim J?nior, Wanderley Ferreira de, CPF:87244152434, http://lattes.cnpq.br/8131607733881361, Freire J?nior, Raimundo Carlos Silv?rio |
| Publisher | Universidade Federal do Rio Grande do Norte, Programa de P?s-Gradua??o em Engenharia Mec?nica, UFRN, BR, Tecnologia de Materiais; Projetos Mec?nicos; Termoci?ncias |
| Source Sets | IBICT Brazilian ETDs |
| Language | Portuguese |
| Detected Language | English |
| Type | info:eu-repo/semantics/publishedVersion, info:eu-repo/semantics/masterThesis |
| Format | application/pdf |
| Source | reponame:Repositório Institucional da UFRN, instname:Universidade Federal do Rio Grande do Norte, instacron:UFRN |
| Rights | info:eu-repo/semantics/openAccess |
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