Weibull analysis of tensile tested piassava fibers with different diameters
ABSTRACT Environmental considerations in addition to technical, economical and societal benefits are increasingly promoting the substitution of natural fibers for glass fiber in polymer matrix composites. However, natural fibers are heterogeneous in their dimensions, specially the cross section, which plays an important role in their mechanical strength. It has been found that the equivalent diameter of fibers such as sisal, ramie, pineapple and curaua correlates to different levels of tensile resistance. Piassava is a promising stiff natural fiber for composite reinforcement. In this work, a statistical analysis of tensile strength of piassava fibers using the Weibull methodology was performed. An attempt to correlate the fiber strength, obtained in tensile tests, with the diameter, precisely measured by means of a profile projector, was carried out. The results revealed an inverse dependence between the piassava fiber diameter and corresponding tensile strength. Fracture tip observation by SEM suggested a possible mechanism that could justify this inverse correlation.
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Laboratório de Hidrogênio, Coppe - Universidade Federal do Rio de Janeiro
2018
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oai:scielo:S1517-707620180004004452018-12-03Weibull analysis of tensile tested piassava fibers with different diametersFerreira,Denise Cristina de Oliveira NascimentoFerreira,Ailton da SilvaMonteiro,Sergio Neves piassava fiber testing traction strength/diameter correlation ABSTRACT Environmental considerations in addition to technical, economical and societal benefits are increasingly promoting the substitution of natural fibers for glass fiber in polymer matrix composites. However, natural fibers are heterogeneous in their dimensions, specially the cross section, which plays an important role in their mechanical strength. It has been found that the equivalent diameter of fibers such as sisal, ramie, pineapple and curaua correlates to different levels of tensile resistance. Piassava is a promising stiff natural fiber for composite reinforcement. In this work, a statistical analysis of tensile strength of piassava fibers using the Weibull methodology was performed. An attempt to correlate the fiber strength, obtained in tensile tests, with the diameter, precisely measured by means of a profile projector, was carried out. The results revealed an inverse dependence between the piassava fiber diameter and corresponding tensile strength. Fracture tip observation by SEM suggested a possible mechanism that could justify this inverse correlation.info:eu-repo/semantics/openAccessLaboratório de Hidrogênio, Coppe - Universidade Federal do Rio de Janeiroem cooperação com a Associação Brasileira do Hidrogênio, ABH2Matéria (Rio de Janeiro) v.23 n.4 20182018-01-01info:eu-repo/semantics/articletext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1517-70762018000400445en10.1590/s1517-707620180004.0588 |
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Ferreira,Denise Cristina de Oliveira Nascimento Ferreira,Ailton da Silva Monteiro,Sergio Neves |
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Ferreira,Denise Cristina de Oliveira Nascimento Ferreira,Ailton da Silva Monteiro,Sergio Neves Weibull analysis of tensile tested piassava fibers with different diameters |
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Ferreira,Denise Cristina de Oliveira Nascimento Ferreira,Ailton da Silva Monteiro,Sergio Neves |
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Ferreira,Denise Cristina de Oliveira Nascimento |
title |
Weibull analysis of tensile tested piassava fibers with different diameters |
title_short |
Weibull analysis of tensile tested piassava fibers with different diameters |
title_full |
Weibull analysis of tensile tested piassava fibers with different diameters |
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Weibull analysis of tensile tested piassava fibers with different diameters |
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Weibull analysis of tensile tested piassava fibers with different diameters |
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weibull analysis of tensile tested piassava fibers with different diameters |
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ABSTRACT Environmental considerations in addition to technical, economical and societal benefits are increasingly promoting the substitution of natural fibers for glass fiber in polymer matrix composites. However, natural fibers are heterogeneous in their dimensions, specially the cross section, which plays an important role in their mechanical strength. It has been found that the equivalent diameter of fibers such as sisal, ramie, pineapple and curaua correlates to different levels of tensile resistance. Piassava is a promising stiff natural fiber for composite reinforcement. In this work, a statistical analysis of tensile strength of piassava fibers using the Weibull methodology was performed. An attempt to correlate the fiber strength, obtained in tensile tests, with the diameter, precisely measured by means of a profile projector, was carried out. The results revealed an inverse dependence between the piassava fiber diameter and corresponding tensile strength. Fracture tip observation by SEM suggested a possible mechanism that could justify this inverse correlation. |
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Laboratório de Hidrogênio, Coppe - Universidade Federal do Rio de Janeiro |
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2018 |
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http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1517-70762018000400445 |
work_keys_str_mv |
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1756424573131161600 |