5586152 Carbon fiber-reinforced carbon composite materials, processes for their production, and first walls of nuclear fusion reactors employing them

1998 ◽  
Vol 29 (3) ◽  
pp. 339
Keyword(s):  
Composite Materials ◽  
Carbon Fiber ◽  
Nuclear Fusion ◽  
Carbon Composite ◽  
Fusion Reactors ◽  
Fiber Reinforced ◽  
Carbon Composite Materials ◽  
Carbon Fiber Reinforced

Wear Properties of Metal-Impregnated Carbon Fiber-Reinforced Carbon Composite Sliding Against a Copper Plate Under an Electric Current

2005 ◽  
Author(s):  
Shunichi Kubo ◽  
Hiroshi Tsuchiya
Keyword(s):  
Carbon Fiber ◽  
Electric Current ◽  
High Speed ◽  
Carbon Composite ◽  
Copper Plate ◽  
Fiber Reinforced ◽  
Wear Properties ◽  
Copper Disk ◽  
Carbon Fiber Reinforced ◽  
Arc Discharges

The metal-impregnated carbon fiber-reinforced carbon composite (C/C composite) is expected to be a candidate material for pantograph contact strips of high-speed electric railway vehicles, because its mechanical strength for flexure and impact is much higher than that of the conventional metal-impregnated carbon. The authors have investigated the wear properties of copper-titanium-alloy impregnated C/C composite sliding against a copper disk under an electric current and frequent arc discharges. The tested C/C composite was prepared by press molding and baking of laminated carbon fiber woven sheets. There exists anisotropy in the physical properties originated from the orientation of carbon fiber woven sheets lamination. The C/C composite was slid in two directions, in parallel with or perpendicular to the sheet layer. The test results show that the wear rate in sliding in the parallel direction exceeds that in the perpendicular direction, especially in the cases where the material is subjected to higher current density and more frequent arc discharges.

Damage detection of unidirectional carbon fiber–reinforced laminates with embedded magnetostrictive particulates: A preliminary study

2012 ◽  
Vol 24 (8) ◽  
pp. 991-1006 ◽  
Author(s):  
Oliver J Myers ◽  
George Currie ◽  
Jonathan Rudd ◽  
Dustin Spayde ◽  
Nydeia Wright Bolden
Keyword(s):  
Composite Materials ◽  
Carbon Fiber ◽  
Nondestructive Evaluation ◽  
Composite Laminates ◽  
Composite Structures ◽  
Single Layer ◽  
Polymeric Composite ◽  
Analytical Models ◽  
Fiber Reinforced ◽  
Carbon Fiber Reinforced

Defects in composite laminates are difficult to detect because of the conductive and paramagnetic properties of composite materials. Timely detection of defects in composite laminates can improve reliability. This research illustrates the preliminary analysis and detection of delaminations in carbon fiber laminate beams using a single layer of magnetostrictive particles and noncontacting concentric magnetic excitation and sensing coils. The baseline analytical models also begin to address the intrusive nature of the magnetostrictive particles as well as relate the applied excitation field with the stress and magnetic flux densities induced in the magnetostrictive layer. Numerical methods are used to begin to characterize the presence of magnetostrictive particles in the laminate and the behavior of the magnetostrictive particles in relationship to the magnetic field used during sensing. Unidirectional laminates with embedded delaminations are used for simulations and experimentations. A novel, yet simplified fabrication method is discussed to ensure consistent scanning and sensing capabilities. The nondestructive evaluation scanning experiments were conducted with various shapes and sizes of damages introduced into carbon fiber–reinforced polymeric composite structures. The results demonstrate high potential for magnetostrictive particles as a low-cost, noncontacting, and reliable sensor for nondestructive evaluation of composite materials.

303 Development of Carbon Fiber Reinforced Bio-Ceramics Composite Materials and the Superplasticity

2005 ◽  
Vol 2005 (0) ◽  
pp. 47-48
Author(s):  
Ken TOGAWA ◽  
Akira KURUMADA ◽  
Yoshinobu MOTOHASHI ◽  
Yasushi SUETSUGU ◽  
Toshiyuki IKOMA ◽  
...  
Keyword(s):  
Composite Materials ◽  
Carbon Fiber ◽  
Fiber Reinforced ◽  
Carbon Fiber Reinforced

Review of Hygrothermal Effects on Carbon Fiber-Reinforced Composite Materials

2012 ◽  
Vol 490-495 ◽  
pp. 3611-3615 ◽  
Author(s):  
Ping Jin ◽  
De Wang ◽  
Xiao Ming Tan
Keyword(s):  
Composite Materials ◽  
Carbon Fiber ◽  
Research Process ◽  
Fiber Reinforced ◽  
Fiber Reinforced Composite ◽  
Detailed Review ◽  
Reinforced Composite ◽  
Hygrothermal Environment ◽  
Carbon Fiber Reinforced ◽  
Three Components

This paper presents a review of the effects of hygrothermal environment on carbon fiber-reinforced composite materials. A brief summary of the hygrothermal phenomenon and hygrothermal mechanism of CFRP is followed by a detailed review of hygrothermal effects on the performance of the three components of CFRP. In the last, the main problems existing in research process nowadays and its tendency have been proposed.

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