Bearing capacity of a threaded pair made of spatially reinforced carbon-carbon composite materials at high temperatures

2021 ◽  
pp. 30-34
Author(s):  
Keyword(s):  
Composite Materials ◽  
Bearing Capacity ◽  
High Temperatures ◽  
Limit Load ◽  
Carbon Composite ◽  
Reinforcement Scheme ◽  
Carbon Composite Material ◽  
Carbon Composite Materials ◽  
Threaded Joints ◽  
Joint Limit

The bearing capacity of a threaded pair made of spatially reinforced carbon-carbon composite materials (CCCM) with a 4DL reinforcement scheme in the temperature range from 20 to 2500 °C is experimentally determined. Recommendations are given for the design of CCCM threaded joints for operation at high temperatures. Keywords: carbon-carbon composite material, threaded joint, limit load, bearing capacity, threaded pair, high temperature. [email protected]

Friction Coefficient Estimate for Threaded Joints Made of Carbon-Carbon Composite Materials

2021 ◽  
pp. 22-28
Author(s):  
M.A. Lyubchenko
Keyword(s):  
Composite Materials ◽  
Friction Coefficient ◽  
Laboratory Tests ◽  
Experimental Studies ◽  
Carbon Composite ◽  
Coefficient Estimate ◽  
Tightening Force ◽  
Torque Wrench ◽  
Carbon Composite Materials ◽  
Threaded Joints

Experimental studies were carried out to estimate the friction coefficients for a screw-nut threaded pair made of spatially reinforced carbon-carbon composite materials (CCCM). Quantitative values were obtained for the thread friction coefficient and nut end friction coefficient. The ultimate screw-in torque for the CCCM threaded pair was determined, and its failure mode at a destructive screw-in torque was established. The laboratory tests were carried out to measure the tightening force. The nut screw-in torque was measured using a torque wrench.

A novel method to prepare a nanotubes@mesoporous carbon composite material based on waste biomass and its electrochemical performance

2017 ◽  
Vol 5 (8) ◽  
pp. 3875-3887 ◽  
Author(s):  
Huanxin Li ◽  
Yi Gong ◽  
Chaopeng Fu ◽  
Haihui Zhou ◽  
Wenji Yang ◽  
...  
Keyword(s):  
Composite Material ◽  
Composite Materials ◽  
Mesoporous Carbon ◽  
Carbon Composite ◽  
Waste Biomass ◽  
Innovative Method ◽  
Carbon Composite Material ◽  
Plant Waste ◽  
Carbon Composite Materials ◽  
Novel Method

Hierarchical nanotubes@mesoporous carbon composite materials were controllably synthesized by an innovative method based on plant waste corncob and nitrogen source melamine via thermal treatment.

Joining of Metal Films to Carbon-Carbon Composite Material by Metal Plasma Immersion Ion Implantation

1993 ◽  
Vol 314 ◽  
Author(s):  
André Anders ◽  
Simone Anders ◽  
Ian G. Brown ◽  
Peter Chow
Keyword(s):  
Composite Materials ◽  
Ion Implantation ◽  
Plasma Deposition ◽  
Carbon Composite ◽  
Metal Films ◽  
Vacuum Arc ◽  
Metal Plasma ◽  
Carbon Composite Material ◽  
Carbon Composite Materials ◽  
Plasma Immersion Ion Implantation

AbstractAdhesion of metal films to carbon-carbon composite materials is a problem when using conventional techniques such as sputter deposition. Metal plasma immersion ion implantation is a novel technique which in combination with metal plasma deposition can produce metal-tocomposite bonding with very good adhesion characteristics. The substrate is immersed in a metal plasma which is produced by a pulsed vacuum arc. When the substrate is biased to high negative voltage the metal ions are accelerated toward and implanted into the substrate. A repetitively pulsed bias (Its pulses) is used to avoid arcing and other deleterious effects. Between high voltage pulses, metal plasma is deposited onto the surface with an energy typical of vacuum arcs, about 50–100 eV. The underlying idea of this mixed implantation-deposition technique is the formation of an extended substrate-film intermixed layer. We have demonstrated the technique for nickel films on carbon-carbon composite materials.

scholarly journals Experimental and numerical study of the formation of thermophysical characteristics of carbon composite materials. Part 1. Formation of the thermophysical characteristics of the carbon composite material

2019 ◽  
pp. 19-27
Author(s):  
S. A. Kolesnikov ◽  
L. V. Kim ◽  
V. R. Dudin
Keyword(s):  
Thermal Conductivity ◽  
Composite Materials ◽  
Thermal State ◽  
Numerical Study ◽  
Carbon Composite ◽  
Parallel Beam ◽  
Thermophysical Characteristics ◽  
Coefficient Of Thermal Conductivity ◽  
Carbon Composite Material ◽  
Carbon Composite Materials

Conducted analysis of heat transfer in the amount of carbon-carbon composite materials. Experienced by found that homogeneous thermal State is formed at a depth of up to twenty structural cells of the composite. Identified characteristic layered structure porosity of the material in the form of pores-cracks. Experimentally demonstrated value of reducing coefficient of thermal conductivity for samples when their division into parts. Found that the process of cooling the hot rod of reinforcement from carbon composite substance to a lesser extent on effective thermal conductivity in transversal direction of a parallel beam of fibers to a greater extent the contact thermal resistance on the limits of the port-cracks with a crack of air heat conductivity 0,3 W/(m·K). Ill. 5. Ref. 18. Tab. 1.

The system of indicators of the quality of the carbon-carbon composite materials and technologies of their production

2018 ◽  
pp. 127-132
Author(s):  
T. N. Antipova ◽  
D. S. Shiroyan
Keyword(s):  
Composite Material ◽  
Low Cost ◽  
Experimental Studies ◽  
Carbon Matrix ◽  
Carbon Composite ◽  
Optimal Number ◽  
Laboratory Equipment ◽  
Carbon Composite Material ◽  
Carbon Composite Materials

The system of indicators of quality of carbon-carbon composite material and technological operations of its production is proved in the work. As a result of the experimental studies, with respect to the existing laboratory equipment, the optimal number of cycles of saturation of the reinforcing frame with a carbon matrix is determined. It was found that to obtain a carbon-carbon composite material with a low cost and the required quality indicators, it is necessary to introduce additional parameters of the pitch melt at the impregnation stage.

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