Temperature effects on mechanical response and failure mechanism of 3D angle-interlock woven carbon/epoxy composites

2020 ◽  
Vol 18 ◽  
pp. 37-42 ◽  
Author(s):  
Ming-guang Dang ◽  
Dian-sen Li ◽  
Lei Jiang
Keyword(s):  
Failure Mechanism ◽  
Temperature Effects ◽  
Mechanical Response ◽  
Epoxy Composites

Fracture toughness and failure mechanism of graphene based epoxy composites

2014 ◽  
Vol 97 ◽  
pp. 90-99 ◽  
Author(s):  
Swetha Chandrasekaran ◽  
Narumichi Sato ◽  
Folke Tölle ◽  
Rolf Mülhaupt ◽  
Bodo Fiedler ◽  
...  
Keyword(s):  
Fracture Toughness ◽  
Failure Mechanism ◽  
Epoxy Composites

Mechanical Enhancement of Carbon Fiber/Epoxy Composites Based on Carbon Nano Fibers by Using Spraying Methodology

2012 ◽  
Vol 245 ◽  
pp. 203-208
Author(s):  
Ali Sarim ◽  
Bo Ming Zhang ◽  
Chang Chun Wang
Keyword(s):  
Mechanical Properties ◽  
Mechanical Response ◽  
High Strength ◽  
Weight Percent ◽  
Nano Particles ◽  
Epoxy Composites ◽  
Simultaneous Increase ◽  
Short Beam ◽  
Percent Improvement ◽  
Depth Analysis

Carbon nanofibers have been utilized increasingly for enhancing the mechanical properties of advanced polymer composites, which include high strength, stiffness, toughness, and through-thickness Properties. The incorporation of nano particles with a high aspect ratio and extremely large surface area into polymers improves their mechanical properties significantly. Although a number of efforts have been made to improve various properties by mixing nano particles directly into resin, however, it could lead to high viscosities which create problems during processing. In this particular study, an attempt has been made to enhance mechanical response of nano composites by using, state of the art, a different technique i.e spraying the Carbon Nano Fibers (CNF) on dry perform before infusion. The nano composite samples were prepared using a spraying methodology i.e dispersing the 1.0 weight percent CNF solution on carbon fabric, and evaporating the solvent such that only nano fibers remain on perform, followed by Vacuum assisted resin transfer molding (VARTM). Tensile, compression, flexural and short beam strength tests were performed to evaluate the effectiveness of CNF addition on the mechanical properties of carbon / epoxy composites. Results indicated, CNF addition offered simultaneous increase in all these mechanical properties in different percentages i.e 22–28 percent improvement in tensile strength, 7-11 percent in compressive strength, 14–19 percent in Flexural strength and 45-55 percent short beam strength with respect to the neat composite. The rise in their modulus has also been discussed in detail and part of this study. For in-depth analysis, Microscopic approaches were also carried out to investigate the fracture behavior and mechanism of material. Scanning electron microscopy of fractured surfaces revealed improved primary fiber–matrix adhesion and indications of CNF-induced matrix toughening.

I–V characteristics and electro-mechanical response of different carbon black/epoxy composites

2010 ◽  
Vol 41 (1) ◽  
pp. 25-32 ◽  
Author(s):  
Xiaoyong Ji ◽  
Hui Li ◽  
David Hui ◽  
Kuang-Ting Hsiao ◽  
Jinping Ou ◽  
...  
Keyword(s):  
Carbon Black ◽  
Mechanical Response ◽  
Epoxy Composites

Effects of fiber length on the performance of piassava-reinforced epoxy composites

2020 ◽  
Vol 234 (11) ◽  
pp. 1431-1438
Author(s):  
RG Castro ◽  
FC Amorim ◽  
JML Reis
Keyword(s):  
Fiber Length ◽  
Mechanical Response ◽  
Pollutant Emissions ◽  
Epoxy Composites ◽  
Ductile Material ◽  
Reinforced Composites ◽  
Fiber Reinforced ◽  
Green Technologies ◽  
Lignocellulosic Fibers ◽  
Cost Of Materials

Investigation of lignocellulosic fibers in polymeric composites is important for development of green technologies, to reduce the weight and cost of materials and reduce pollutant emissions. In this work, the influence of piassava fiber length was evaluated to verify the mechanical response when incorporated in fiber-reinforced epoxy composites containing 20% piassava. Raw fibers were cut manually to lengths of 10, 20, and 30 mm. Tensile and flexural properties of the fiber-reinforced composites were compared. An increase in the fiber length was associated with higher tensile and flexural moduli and strength of piassava–epoxy composites, leading to stiffer and lesser ductile material.

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