Impregnation of 3D Woven Carbon Fibre Preforms by Electrophoretic Deposition of Single and Mix of Non Oxide Ceramic Nanoscale Powders, and Densification of the Composite Material

2006 ◽  
pp. 91-96
Author(s):  
N. Eberling-Fux ◽  
R. Pailler ◽  
A. Guette ◽  
Sebastien Bertrand ◽  
Eric Philippe
Keyword(s):  
Composite Material ◽  
Carbon Fibre ◽  
Electrophoretic Deposition ◽  
Oxide Ceramic

Impregnation of 3D Woven Carbon Fibre Preforms by Electrophoretic Deposition of Single and Mix of Non Oxide Ceramic Nanoscale Powders, and Densification of the Composite Material

2006 ◽  
Vol 50 ◽  
pp. 91-96 ◽  
Author(s):  
N. Eberling-Fux ◽  
R. Pailler ◽  
A. Guette ◽  
Sebastien Bertrand ◽  
Eric Philippe
Keyword(s):  
Carbon Fibre ◽  
Electrophoretic Deposition ◽  
Experimental Results ◽  
Oxide Ceramic ◽  
Counter Electrodes ◽  
Stable Suspension ◽  
Powder Concentration ◽  
Plasma Sintering ◽  
Spark Plasma ◽  
Deposition Electrode

3D woven carbon fibre preforms (~ 2 mm thickness) were impregnated with single or mixture of non oxide ceramic nanoscale powders in ethanolic suspensions using electrophoretic deposition (EPD). The measurement of the ζ potential of the suspension compared with its behaviour in sedimentation permits to conclude about the optimal concentration of surfactant necessary to get the most stable suspension. The experimental results were in agreement with the theoretical ones obtained using DLVO (Derjaguin, Landau, Verwey and Overbeek) theory. EPDs were carried out by applying a constant voltage between the 3D carbon fibre preform serving as deposition electrode and counter electrodes in graphite. The effect of the powder concentration on the rate and the quality of impregnation was studied. A qualitative model based on the experimental results and literature was then proposed. Experiments were not only carried out on raw 3D fibrous preforms but also on preforms with interphases. SEM and optical micrographies of fractured and polished sections of the infiltrated fabrics revealed that a quite high degree of infiltration (rates of impregnation estimated between 50 and 70 %) was obtained. At last, the composite was densified using spark plasma sintering (SPS).

Investigations on neutron irradiated 3D carbon fibre reinforced carbon composite material

2018 ◽  
Vol 502 ◽  
pp. 276-281 ◽  
Author(s):  
Ramani Venugopalan ◽  
V.D. Alur ◽  
A.K. Patra ◽  
R. Acharya ◽  
D. Srivastava
Keyword(s):  
Composite Material ◽  
Carbon Fibre ◽  
Carbon Composite ◽  
Carbon Composite Material

scholarly journals Properties of AlSi9Mg Alloy Matrix Composite Reinforced with Short Carbon Fibre after Remelting

2015 ◽  
Vol 15 (3) ◽  
pp. 39-42 ◽  
Author(s):  
M. Łągiewka ◽  
Z. Konopka
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Composite Material ◽  
Yield Strength ◽  
Carbon Fibre ◽  
Matrix Composite ◽  
Metal Matrix ◽  
Alloy Matrix ◽  
Metallic Inclusions ◽  
Short Carbon

Abstract The presented work describes the results of examination of the mechanical properties of castings made either of AlSi9Mg alloy matrix composite reinforced with short carbon fibre or of the pure AlSi9Mg alloy. The tensile strength, the yield strength, Young’s modulus, and the unit elongation were examined both for initial castings and for castings made of the remelted composite or AlSi9Mg alloy. After preparing metallographic specimens, the structure of the remelted materials was assessed. A few non-metallic inclusions were observed in the structure of the remelted composite, not occurring in the initial castings. Mechanical testing revealed that all the examined properties of the initial composite material exceed those of the non-reinforced matrix. A decrease in mechanical properties was stated both for the metal matrix and for the composite after the remelting process, but this decrease was so slight that it either does not preclude them from further use or does not restrict the range of their application.

Mechanical Damage to Aircraft Structures from Lightning Strikes

1993 ◽  
Vol 207 (1) ◽  
pp. 1-14 ◽  
Author(s):  
G W Reid
Keyword(s):  
Composite Material ◽  
Carbon Fibre ◽  
Fibre Composite ◽  
Mechanical Damage ◽  
Physical Damage ◽  
Carbon Fibre Composite ◽  
Fast Heating ◽  
Cross Sectional ◽  
Aircraft Structures ◽  
Lightning Strikes

The various types of current waveforms associated with lightning discharges are discussed together with their relevance to different areas of the aircraft structures. The physical damage that could be sustained by aircraft material due to lightning strikes, in particular the damage to composite material especially carbon fibre, is described. This damage is primarily due to the very fast heating and impulsive forces which lightning currents can produce. Minimum cross-sectional areas required to carry these currents safely are discussed as well as the effect of moisture content and loading the samples during test for the case of carbon fibre composite material. Details of the effects of arc attachment to various composite materials and also metal with the degree and type of damage that can be produced are reviewed.

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