Experimental and Numerical Study of the Formation of Thermophysical Characteristics of Carbon Composite Materials. Part 1. Formation of the thermophysical Characteristics of a Carbon Composite Material

2019 ◽  
Vol 60 (4) ◽  
pp. 327-335
Author(s):  
S. A. Kolesnikov ◽  
L. V. Kim ◽  
V. R. Dudin
Keyword(s):  
Composite Material ◽  
Composite Materials ◽  
Numerical Study ◽  
Carbon Composite ◽  
Thermophysical Characteristics ◽  
Carbon Composite Material ◽  
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.

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.

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.

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]

scholarly journals Carbon Fiber Composite Materials in Modern Day Automotive Production Lines: A Case Study

2013 ◽  
Author(s):  
Håkan Petersson ◽  
Damien Motte ◽  
Robert Bjärnemo
Keyword(s):  
Composite Material ◽  
Composite Materials ◽  
Automotive Industry ◽  
Material Properties ◽  
Fiber Composite ◽  
Stable Process ◽  
Carbon Composite ◽  
Production Equipment ◽  
Production Lines ◽  
Carbon Composite Materials

New and innovative production equipment can be developed by introducing lightweight materials in modern day automotive industry production lines. The properties of these new materials are expected to result in improved ergonomics, energy savings, increased flexibility and more robust equipment, which in the end will result in enhanced productivity. Carbon composite materials are one such alternative that has excellent material properties. These properties are well documented, and the market for carbon composite materials is growing in many areas such as commercial aircrafts, sporting goods and wind turbines. However, when studying the use of carbon composite materials for production equipment in the automotive industry, it was found that there were few, if any, such examples. This paper focuses on innovative ways of making carbon composite materials available for designing automotive industry production equipment by introducing a design and material concept that combines flexibility, relatively low costs and high functionality. By reducing the weight by 60%, it was obvious that the operators were very positive to the new design. But just as important as the improvement of the ergonomic feature, the combination of low weight and material properties resulted in a more robust design and a more stable process of operation. The two main designs (two versions of the steel-based design were constructed) were developed sequentially, making it difficult to compare development costs since knowledge migrated from one project to the next. In this study, the gripper was manufactured in both carbon composite material and steel. The different designs were compared with reference to design costs, functionality, robustness, product costs and ergonomics. The study clearly shows that the composite material represents a favorable alternative to conventional materials, as the system combines superior properties without significantly increasing the cost of the equipment. This paper describes the approach in detail.

scholarly journals Analysis of Surface Defects in Composites Using Digital Image Correlation and Acoustic Emission

2018 ◽  
Vol 66 (5) ◽  
pp. 1217-1224
Author(s):  
Jaroslav Začal ◽  
Petr Dostál ◽  
Jakub Rozlivka ◽  
Martin Brabec
Keyword(s):  
Acoustic Emission ◽  
Composite Material ◽  
Composite Materials ◽  
Digital Image ◽  
Tensile Loading ◽  
Carbon Composite ◽  
Image Correlation ◽  
Damage Diagnostics ◽  
Carbon Composite Materials ◽  
Early Damage

This work employs the acoustic emission (AE) method for material state monitoring. AE presents a non‑destructive evaluation technique, which could be used for detection of microstructural changes in composite material. Work describes the process of acquisition of AE in tensile loading of carbon composite materials. In course of tensile stress, the composite was monitored with optical method, applying principles of digital image correction (DIC). Optical stereovision method enables calculation of field shift and field of proportional deformation at composite surface. The objective is analysis of damage in carbon composite materials and employ the methodology of AE signal processing for facilitation of early damage diagnostics and prediction of structural failure. For this purpose, the experimental setup was designed to obtain results from 50 nominally identical composite samples in tensile loading test. Force load applied on samples was synchronically recorded along with AE and image data. Experimental data were subsequently analysed in a way enabling the description of typical phenomena in course of every measurement. Results show that observation of AE sources could be employed in facilitation of early damage diagnostics and establishment of failure prognosis. It is about internal changes in composite material.

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