scholarly journals On the relation between mechanical properties of carbon fibres and those of composite materials - Compressive and shear properties.

1986 ◽  
Vol 12 (6) ◽  
pp. 251-258 ◽  
Author(s):  
J. MATSUI ◽  
S. NOMURA ◽  
Y. ISHII
Keyword(s):  
Mechanical Properties ◽  
Composite Materials ◽  
Carbon Fibres ◽  
Shear Properties

scholarly journals Effect of microstructure on the plasma surface treatment of carbon fibres

2016 ◽  
Vol 51 (23) ◽  
pp. 3239-3256 ◽  
Author(s):  
Santiago Corujeira-Gallo ◽  
Hanshan Dong
Keyword(s):  
Mechanical Properties ◽  
Surface Roughness ◽  
Composite Materials ◽  
Surface Chemistry ◽  
Surface Treatments ◽  
Carbon Fibres ◽  
Negative Consequences ◽  
Plasma Surface ◽  
Plasma Surface Treatment ◽  
Mechanical And Physical Properties

Carbon fibres are leading reinforcements in composite materials because of their outstanding mechanical and physical properties. However, the graphitic surface of these fibres is relatively inert, and the weak interaction between the carbon fibres and the polymeric matrix has negative consequences for the mechanical properties of composite materials. Surface treatments have been used to increase the surface roughness, remove contaminants or weakly bonded layers, and to alter the surface chemistry and wettability of the fibres. In this article, the authors review the effect of the microstructure on the response of the carbon fibres to the surface treatments. The observations from conventional carbon fibres and functionalisation techniques are extrapolated to plasma surface treatments and to novel carbon fibres produced from bio-precursors.

Development and Characterisation of Phenolic Resin Moulding Materials for the Production of New Short Fibre-Reinforced C/C-SiC Composites

2015 ◽  
Vol 825-826 ◽  
pp. 215-223 ◽  
Author(s):  
Daisy Nestler ◽  
Natalia Nier ◽  
Kristina Roder ◽  
Erik Päßler ◽  
Julia Weißhuhn ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Composite Materials ◽  
Ceramic Composite ◽  
Phenolic Resin ◽  
Production Method ◽  
Carbon Fibres ◽  
Ceramic Composite Materials ◽  
Sic Composites ◽  
The Impact ◽  
Processing Aids

This article focuses on the development of phenolic resin moulding materials for the production of new carbon fibre-reinforced ceramic composite materials based on C/C-SiC by utilising the LSI (liquid silicon infiltration) production method. The production of these moulding materials is being accomplished by combining phenolic resin and carbon fibres with the addition of a few selected parts of processing aids, during which the influence of the used lubricants on the processability of the moulding materials is examined. The starting materials, microstructures and mechanical properties of the materials were characterised at every step of the entire process (CFRP and C/C composites) as well as the end of the whole production (C/C-SiC composites). During this investigation a link between the portions of the lubricant used, the forming of the porosity and the impact on the mechanical properties was discovered. In regards to the optimisation of the process the involved parties were able to determine an optimal lubricant ratio.

scholarly journals The Influence of Pyrolitic Degradation on Mechanical Properties of Carbon Fibres within Recycling Composite Materials

2017 ◽  
Vol 63 (4) ◽  
pp. 8-12
Author(s):  
Michal Návrat ◽  
Jaroslav Závada ◽  
Veronika Glogarová
Keyword(s):  
Mechanical Properties ◽  
Composite Material ◽  
Composite Materials ◽  
Carbon Fibre ◽  
Tensile Tests ◽  
Negative Influence ◽  
Carbon Fibres ◽  
Pyrolysis Process

Abstract The article deals with the influence of thermal pyrolytic degradation on mechanical properties of carbon fibres used in the production of composite material. The carbon fibre has been chosen as the reinforcement of composite and the resin formed a matrix (binder). During the pyrolysis process, the resin was eliminated and the carbon fibre was separated. Pyrolysis was carried out at temperatures of 450 °C, 550 °C and 650 °C. Subsequently also tensile tests were performed on the treated material to compare the mechanical properties of the fibres prior to pyrolysis and after decomposition. The results showed negative influence at the selected temperatures during the pyrolysis treatment on the mechanical properties of the carbon fibres.

Mechanical properties evaluation of T800 carbon fiber reinforced hybrid composite embedded with silicon carbide microparticles

2018 ◽  
Vol 14 (3) ◽  
pp. 589-608 ◽  
Author(s):  
Rakesh Potluri
Keyword(s):  
Mechanical Properties ◽  
Silicon Carbide ◽  
Composite Materials ◽  
Hybrid Composite ◽  
Hybrid Composites ◽  
Fiber Reinforced ◽  
Shear Properties ◽  
Content Type ◽  
Volume Fractions ◽  
Transverse Tensile

PurposeThe purpose of this paper is to study the effect of the addition of silicon carbide (SiC) microparticles and their contributions regarding the tensile and shear properties of the T800 fiber reinforced polymer composite at various fiber volume fractions. The tensile and shear properties of the hybrid composites where continuous T800 fibers are used as reinforcements in an epoxy matrix embedded with SiC microparticles have been studied.Design/methodology/approachThe results were obtained by implementing a micromechanics approach assuming a uniform distribution of reinforcements and considering one unit cell from the whole array. Using the two-step homogenization process, the properties of the materials were determined by using the finite element analysis (FEA). The predicted elastic properties from FEA were compared with the analytical results. The analytical models were implemented in the MATLAB Software. The FEA was performed in ANSYS APDL.FindingsThe mechanical properties of the hybrid composite had increased when compared with the properties of the conventional FRP. The results suggest that SiC particles are a good reinforcement for enhancing the transverse and shear properties of the considered fiber reinforced epoxy composite. The microparticle embedment has significant effect on the transverse tensile properties as well as in-plane and out-of-plane shear properties.Research limitations/implicationsThis is significant because improving the properties of the composite materials using different methods is of high interest in the materials community. Using this study people can work on the process of including different type of microparticles in to their composite designs and improve their performance characteristics. The major influence of the particles can be seen only at lower volume fractions of the fiber in the composite. Only FEA and analytical methods were used for the study.Practical implicationsMaterial property improvements lead to more advanced designs for aerospace and defense structures, which allow for high performance under unpredictable conditions.Originality/valueThis type of study proves that the embedment of different microparticles is a method that can be used for improving the properties of the composite materials. The improvement of the transverse and shear properties will be useful especially in the design of shell structures in the different engineering applications.

Aging of polymer composite materials under loading. (See Beginning in #10-2020)

2020 ◽  
pp. 2-12
Keyword(s):  
Mechanical Properties ◽  
Composite Materials ◽  
Polymer Composite ◽  
Polymer Composite Materials ◽  
Cyclic Loads ◽  
Reinforced Plastics ◽  
Water Exposure ◽  
Laboratory Conditions ◽  
Bending Loads ◽  
Moisture Conditions

A study review of aging polymer composite materials (PCM) under different heat-moisture conditions or water exposure with the sequential or parallel influence of static or cyclic loads in laboratory conditions is presented. The influence of tension and bending loads is compared. Conditions of the different load influence on parameters of carbon-reinforced plastics and glass-reinforced plastics are discussed. Equipment and units for climatic tests of PCM under loading are described. Simulation examples of indices of mechanical properties of PCM under the influence of environment and loads are shown.

Aging of polymer composite materials under loading

2020 ◽  
pp. 7-18
Keyword(s):  
Mechanical Properties ◽  
Composite Materials ◽  
Polymer Composite ◽  
Polymer Composite Materials ◽  
Cyclic Loads ◽  
Reinforced Plastics ◽  
Water Exposure ◽  
Laboratory Conditions ◽  
Bending Loads ◽  
Moisture Conditions

A study review of aging polymer composite materials (PCM) under different heat-moisture conditions or water exposure with the sequential or parallel influence of static or cyclic loads in laboratory conditions is presented. The influence of tension and bending loads is compared. Conditions of the different load influence on parameters of carbon-reinforced plastics and glass-reinforced plastics are discussed. Equipment and units for climatic tests of PCM under loading are described. Simulation examples of indices of mechanical properties of PCM under the influence of environment and loads are shown.

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