Charpy Impact Tests in Epoxy Matrix Composites Reinforced with Continuous Sisal Fiber

2014 ◽  
Vol 775-776 ◽  
pp. 290-295 ◽  
Author(s):  
Sergio Neves Monteiro ◽  
Frederico Muylaert Margem ◽  
Artur Camposo Pereira ◽  
Noan Simonassi ◽  
Michel Picanço Oliveira
Keyword(s):  
Energy Absorption ◽  
Epoxy Matrix ◽  
Charpy Impact ◽  
Fracture Analysis ◽  
Main Mechanism ◽  
Sisal Fiber ◽  
Matrix Composites ◽  
Impact Tests ◽  
Macroscopic Observation ◽  
Sisal Fibers

The objective of this work was to investigate the toughness behavior of epoxy matrix composites reinforced with up to 30% in volume of long, continuous and aligned sisal fibers by means of Charpy impact tests. The addition of sisal fibers results in a visible improvement in the energy absorption ability of the composites. Macroscopic observation of the post-impacted specimens and the SEM fracture analysis showed that longitudinal rupture through the sisal fiber interface with the epoxy matrix is the main mechanism for the higher toughness attended by these composites.

Charpy Toughness Behavior of Eucalyptus Fiber Reinforced Polyester Matrix Composites

2016 ◽  
Vol 869 ◽  
pp. 227-232 ◽  
Author(s):  
Anderson de Paula Barbosa ◽  
Frederico Muylaert Margem ◽  
Caroline Gomes Oliveira ◽  
Noan Tonini Simonassi ◽  
Fabio de Oliveira Braga ◽  
...  
Keyword(s):  
Impact Energy ◽  
Charpy Impact ◽  
Fracture Analysis ◽  
Main Mechanism ◽  
Matrix Composites ◽  
Impact Tests ◽  
Eucalyptus Wood ◽  
Post Impact ◽  
Polyester Matrix ◽  
Macroscopic Observation

This work investigated the toughness behavior of polyester matrix composites reinforced with up to 30% in volume of long, continuous and aligned fibers extracted from the eucalyptus wood by means of Charpy impact tests. It was found that the addition of eucalyptus fibers results in a marked increase in the absorbed impact energy of the composites. Macroscopic observation of the post-impact specimens and SEM fracture analysis showed that longitudinal rupture through the Eucalyptus fiber interface with the polyester matrix is the main mechanism for the remarkable toughness of these composites.

Tensile Properties of Epoxy Composites Reinforced with Continuous Sisal Fibers

2014 ◽  
Vol 775-776 ◽  
pp. 284-289 ◽  
Author(s):  
Sergio Neves Monteiro ◽  
Frederico Muylaert Margem ◽  
Wellington Pereira Inácio ◽  
Artur Camposo Pereira ◽  
Michel Picanço Oliveira
Keyword(s):  
Mechanical Properties ◽  
Tensile Properties ◽  
Epoxy Matrix ◽  
Room Temperature ◽  
Fracture Analysis ◽  
Epoxy Composites ◽  
Matrix Composites ◽  
Matrix Interface ◽  
Fiber Matrix Interface ◽  
Sisal Fibers

The tensile properties of DGEBA/TETA epoxy matrix composites reinforced with different amounts of sisal fibers were evaluated. Composites reinforce with up to 30% in volume of long, continuous and aligned sisal fibers were room temperature tested in an Instron machine. The fracture was analyzed by SEM. The results showed significant changes in the mechanical properties with the amount of sisal fibers. These mechanical properties were compared with other bend-tested composites results. The fracture analysis revealed a weak fiber/matrix interface, which could be responsible for the performance of some properties.

Charpy Impact Tests in Epoxy Matrix Composites Reinforced with Malva Fibers

2014 ◽  
pp. 425-432
Author(s):  
Jean Igor Margem ◽  
Frederico Muylaert Margem ◽  
Marina Rangel Margem ◽  
Vinícius Alves Gomes ◽  
Sergio Neves Monteiro
Keyword(s):  
Epoxy Matrix ◽  
Charpy Impact ◽  
Matrix Composites ◽  
Impact Tests

Charpy Impact Tests in Epoxy Matrix Composites Reinforced with Malva Fibers

2014 ◽  
pp. 425-432
Author(s):  
Jean Igor Margem ◽  
Frederico Muylaert Margem ◽  
Marina Rangel Margem ◽  
Vinícius Alves Gomes ◽  
Sergio Neves Monteiro
Keyword(s):  
Epoxy Matrix ◽  
Charpy Impact ◽  
Matrix Composites ◽  
Impact Tests

CHARPY IMPACT TEST IN EPOXY MATRIX COMPOSITES REINFORCED WITH HEMP FIBER

2018 ◽  
Author(s):  
Anna Carolina Cerqueira Neves ◽  
Lázaro Araújo Rohen ◽  
Rafael Gomes de Castro ◽  
Carlos Maurício Fontes Vieira ◽  
Frederico Muylaert Margem ◽  
...  
Keyword(s):  
Epoxy Matrix ◽  
Impact Test ◽  
Charpy Impact ◽  
Charpy Impact Test ◽  
Matrix Composites ◽  
Hemp Fiber

scholarly journals Toughness of polyester matrix composites reinforced with sugarcane bagasse fibers evaluated by Charpy impact tests

2017 ◽  
Vol 6 (4) ◽  
pp. 334-338 ◽  
Author(s):  
Verônica Scarpini Candido ◽  
Alisson Clay Rios da Silva ◽  
Noan Tonini Simonassi ◽  
Fernanda Santos da Luz ◽  
Sergio Neves Monteiro
Keyword(s):  
Sugarcane Bagasse ◽  
Charpy Impact ◽  
Matrix Composites ◽  
Impact Tests ◽  
Polyester Matrix

Development of Highly Impact Resistant NiAl Matrix Composites

1990 ◽  
Vol 194 ◽  
Author(s):  
Vincent C. Nardone ◽  
James R. Strife ◽  
Karl M. Prewo
Keyword(s):  
Stainless Steel ◽  
Energy Absorption ◽  
Room Temperature ◽  
Charpy Impact ◽  
304 Stainless Steel ◽  
Matrix Composites ◽  
Interfacial Condition ◽  
A Value ◽  
Base Composite ◽  
Nial Matrix

AbstractThe ability to produce a NiAl intermetallic base composite with dramatically higher energy absorption capability and damage tolerance has been demonstrated. The approach consists of incorporating continuous tubular 304 stainless steel toughening regions throughout the NiAl matrix. To compensate for the increase in density resulting form the 304 stainless steel, B4C particulate was added to the NiAl so that the overall composite density was within 5% of the value for monolithic NiAl. The notched Charpy impact energy absorption of the B4C/NiAl/304 composites was in the range of 15 to 90 J/cm2, compared to a value of 0.8 J/cm2 for NiAl. The higher energies were measured on samples that deflected the crack front more extensively during failure. For a given interfacial condition, the energy absorption increased as the wall thickness of the 304 tubular toughening regions increased. Finally, room temperature tensile testing of the composites resulted in very large failure strains (20–35%) owing to the 304 stainless steel being able to sustain the applied load once the NiAl regions had completely cracked.

Water Absorption in Sisal Fiber Reinforced-Polymeric Matrix Composites: Three-Dimensional Simulations and Experiments

2018 ◽  
Vol 20 ◽  
pp. 143-154
Author(s):  
D. Gomes dos Santos ◽  
A.G. Barbosa de Lima ◽  
P. de Sousa Costa ◽  
E. Santana de Lima ◽  
G. Moreira ◽  
...  
Keyword(s):  
Water Absorption ◽  
Polymer Composite ◽  
Three Dimensional ◽  
High Water ◽  
Water Bath ◽  
Sisal Fiber ◽  
Matrix Composites ◽  
Polyester Matrix ◽  
Sisal Fibers ◽  
Polymeric Matrix Composites

In this work was conducted a theoretical and experimental study of water absorption in polyester matrix composites reinforced with sisal fiber at temperatures of 25, 50 and 70°C. A fiber content 44.6% sisal fibers, and 55.4% polyester matrix were used in the manufacture of the polymer composite. The dimensions of the composite were 20x20x3mm3and 20x20x6mm3. Water absorption tests were conducted by immersion of the samples in a distilled water bath and the water uptake calculated by weight difference of the samples in the dry and wetted condition at different elapsed time. A three-dimensional mathematical model was developed to predict mass transfer during the water absorption inside the parallelepiped solid. Results of water absorption kinetic and moisture content distribution inside the composites showed the more favorable areas which presents delamination problems due the weakness of the fiber-matrix interface and consequently, reduction in the mechanical properties. It was found that the high water bath temperatures accelerate the absorption process and that the water absorption of the sisal reinforced polymer composite with 3 mm of thickness was faster than the with 6 mm of thickness.

scholarly journals Charpy impact tenacity of epoxy matrix composites reinforced with aligned jute fibers

2017 ◽  
Vol 6 (4) ◽  
pp. 312-316 ◽  
Author(s):  
Artur Camposo Pereira ◽  
Sergio Neves Monteiro ◽  
Foluke Salgado de Assis ◽  
Frederico Muylaert Margem ◽  
Fernanda Santos da Luz ◽  
...  
Keyword(s):  
Epoxy Matrix ◽  
Charpy Impact ◽  
Matrix Composites ◽  
Jute Fibers
Sign in / Sign up

Export Citation Format

Share Document