NDLI: Materiais compósitos de matriz poliéster com reforço híbrido de tecido de fibras de juta e mantas de fibra de vidro / Composite materials of polyester matrix with hybrid reinforcement of jute fiber fabric and fiberglass blankets

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Materiais compósitos de matriz poliéster com reforço híbrido de tecido de fibras de juta e mantas de fibra de vidro / Composite materials of polyester matrix with hybrid reinforcement of jute fiber fabric and fiberglass blankets

Content Provider	Semantic Scholar
Author	Souza, João Henrique Santos Rocha, Thomaz Osmane Dos Santos Gomes, Igor Dos Santos Nascimento, Ailton Da Silva Silva, Douglas S. Nascimento, Ediléia Da Silva Fujiyama, Roberto Tetsuo
Copyright Year	2018
Abstract	O artigo mostra os resultados obtidos de materiais compositos hibridos constituidos de tecido de fibras de juta e manta de fibras de vidro. A matriz dos compositos foi do tipo poliester tereftalica insaturada. Foram fabricadas placas com diferentes composicoes e corpos de prova para ensaio de tracao. Os ensaios de tracao foram realizados conforme a norma ASTM D3039. Foram caracterizadas no aspecto fractografico para avaliar o comportamento de falha dos materiais. Os corpos de prova do composito vidro/vidro/vidro (VVV), obtiveram o maior valor medio de tensao de ruptura (105,58 MPa), os demais compositos,vidro/vidro/juta (VVJ), vidro/juta/vidro (VJV), vidro/juta/juta(VJJ) e juta/vidro/juta (JVJ) sofreram quedas de desempenho mecânico devido a adicao de mantas de juta, sendo estas 30,40%; 30,83%; 54,10% e 36,42% respectivamente. O aspecto fractografico demonstra mecanismos de falha como arrancamento de fibras, ponte de fibras e falha de interface matriz-reforco. Os compositos com fibra de vidro nas camadas externas apresentaram um aspecto de rompimento da matriz e exposicao de fibra de vidro, comprometendo o desempenho mecânico. O composito JVJ contornou este fenomeno pois a fibra de vidro foi posicionada na camada central permitindo melhor transferencia de esforcos.
Starting Page	777
Ending Page	790
Page Count	14
File Format	PDF HTM / HTML
Volume Number	3
Alternate Webpage(s)	http://www.brazilianjournals.com/index.php/BASR/article/download/881/763
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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