NEW METHODS AND TECHNOLOGIES FOR PROCESSING CARBON FIBER-REINFORCED PLASTICS

2021 ◽  
pp. 10-19
Author(s):  
A. L. Galinovskiy ◽  
Chzhen’yuan’ Tszya ◽  
S. N. Tsypysheva ◽  
K. A. Ternovskih ◽  
S. A. Ryabenkova ◽  
...  
Keyword(s):  
Composite Materials ◽  
Aerospace Engineering ◽  
Materials Processing ◽  
Hole Formation ◽  
Reinforced Plastics ◽  
New Methods ◽  
Domestic Enterprise ◽  
Carbon Plastics ◽  
Output Quality ◽  
Fiber Reinforced Plastics

The article deals with the application of new methods and approaches for machining of carbon plastics on the basis of the analysis of foreign information sources with a search depth of five years. The complex problems of composite materials processing, in particular, carbon plastics, the solutions of which have not yet been found in full, are noted. Applying of new methods of hole formation, part milling, hydro-abrasive and laser processing allows to obtain new output quality indicators is pointed out. The implementation of considered methods, developed by foreign scientists, may supplement the tools arsenal and technologies of composite materials processing at domestic enterprise. The importance of quality assurance of composites` complex surfaces processing and formation in aircraft and aerospace engineering, where utilization level of this material is constantly increasing, is indicated.

High-temperature carbon plastics based on thermoreactive polyimide binder

2020 ◽  
pp. 89-102
Author(s):  
M. I. Valueva ◽  
I. V. Zelenina ◽  
M. A. Zharinov ◽  
M. A. Khaskov
Keyword(s):  
Glass Transition ◽  
High Temperature ◽  
Transition Temperature ◽  
Glass Transition Temperature ◽  
Strength Properties ◽  
High Glass Transition Temperature ◽  
Reinforced Plastics ◽  
Carbon Plastics ◽  
Fundamental Possibility ◽  
Fiber Reinforced Plastics

The article presents results of studies of experimental carbon plastics based on thermosetting PMRpolyimide binder. Сarbon fiber reinforced plastics (CFRPs) are made from prepregs prepared by melt and mortar technologies, so the rheological properties of the polyimide binder were investigated. The heat resistance of carbon plastics was researched and its elastic-strength characteristics were determined at temperatures up to 320°С. The fundamental possibility of manufacturing carbon fiber from prepregs based on polyimide binder, obtained both by melt and mortar technologies, is shown. CFRPs made from two types of prepregs have a high glass transition temperature: 364°C (melt) and 367°C (solution), with this temperature remaining at the 97% level after boiling, and also at approximately the same (86–97%) level of conservation of elastic strength properties at temperature 300°С.

Effect of long climatic ageing on the microstructure of the surface of сarbon-fiber-reinforced plastics on base epoxy matrix

2019 ◽  
pp. 157-169 ◽  
Author(s):  
I. S. Deev ◽  
E. V. Kurshev ◽  
S. L. Lonsky
Keyword(s):  
Climatic Factors ◽  
Temperate Climate ◽  
Fiber Reinforced ◽  
Humid Climate ◽  
Climatic Zones ◽  
Reinforced Plastics ◽  
Carbon Plastics ◽  
Fiber Reinforced Plastics ◽  
Determining Factor

Studies and experimental data on the microstructure of the surface of samples of epoxy сarbon-fiber-reinforced plastics that have undergone long-term (up to 5 years) climatic aging in different climatic zones of Russia have been conducted: under conditions of the industrial zone of temperate climate (Moscow, MTsKI); temperate warm climate (Gelendzhik, GTsKI); a warm humid climate (Sochi, GNIP RAS). It is established that the determining factor for aging of carbon plastics is the duration of the complex effect of climatic factors: the longer the period of climatic aging, the more significant changes occur in the microstructure of the surface of the materials. The intensity of the aging process and the degree of microstructural changes in the surface of carbon plastics are affected by the features of the climatic zone. general regularities and features of the destruction of the surface of carbon plastics after a long-term exposure to climatic factors have been established on the basis of the analysis and systematization of the results of microstructural studies.

scholarly journals TFP Technology As Theadvanced Method Of Manufacture Of 3D Reinforced Preforms Frompolymer Composite Materials

2021 ◽  
Vol 12 (5) ◽  
pp. 84-91
Author(s):  
Nelyub Vladimir Aleksandrovich Et al.
Keyword(s):  
Composite Materials ◽  
Carbon Fiber ◽  
3D Printing ◽  
Large Scale ◽  
Research Trends ◽  
Carbon Fiber Reinforced Plastics ◽  
Reinforced Plastics ◽  
Fiber Reinforced Plastics ◽  
Prospective Research ◽  
Further Development

This paper contains an overview of world trends in the development of the TFP technologyenabling 3D printing of carbon fiber reinforced plastics. The review of the equipment used for the automated preformpatching is included. Primary factors restraining the large-scale implementation of the TFP technology in the manufacture are identified, and prospective research trends for further development of the technology are proposed.

Influence of sliding bearing design on efficiency of the fluoroplast macromodifier for antifriction carbon plastics

2021 ◽  
pp. 65-75
Author(s):  
I. V. Lishevich ◽  
A. V. Anisimov ◽  
G. I. Nikolaev ◽  
A. S. Savelov ◽  
A. S. Sargsyan
Keyword(s):  
Sliding Friction ◽  
Friction Unit ◽  
Sliding Bearings ◽  
Friction Zone ◽  
Reinforced Plastics ◽  
Friction Units ◽  
Carbon Plastics ◽  
Key Factor ◽  
Fiber Reinforced Plastics ◽  
Bearing Design

The paper presents the results of laboratory and bench tests of UGET and FUT antifriction carbon plastics macro modified with PTFE. The efficiency (friction coefficient reduction) of this modification of carbon fiber reinforced plastics has been confirmed. The dependence of the method’s efficiency on the design of sliding friction units has been established. The plastic deformation of the fluoroplastic is the key factor that determines the effectiveness of the modifier when designing sliding bearings. The design of the friction unit should exclude the pressure gradient in the fluoroplastic protectors and prevent the possibility of an uncontrolled exit of the fluoroplastic from the friction zone.

Prediction of Fracture Location in Tensile Test of Short-Fiber-Self-Reinforced Polyethylene Composite Plates

2019 ◽  
Author(s):  
Naoya Tada ◽  
Ming Jin ◽  
Takeshi Uemori ◽  
Junji Sakamoto
Keyword(s):  
Composite Materials ◽  
Composite Plates ◽  
Area Fraction ◽  
Fiber Reinforced ◽  
Fracture Location ◽  
Reinforced Plastics ◽  
Low Area ◽  
Reinforcing Fibers ◽  
Uhmwpe Fibers ◽  
Fiber Reinforced Plastics

Abstract Composite materials such as carbon-fiber-reinforced plastics (CFRP) and glass-fiber-reinforced plastics (GFRP) have been attracting much attention from the viewpoint of lightweight solution of automobiles and airplanes. However, the recyclability of these composite materials is not sufficient and the environmental load is large. Recently, self-reinforced polymer (SRP), in which similar polymer is used for reinforcing fibers and matrix, has been proposed. High-density polyethylene (HDPE) reinforced with ultra-high-molecular-weight polyethylene (UHMWPE) fibers, so-called self-reinforced PE (SRPE), is one of the promising thermoplastic composites. In this study, SRPE plates were made and the tensile tests were carried out. After the effect of reinforcement of UHMWPE fibers was evaluated on the basis of the tensile strength, the relationship between the distribution of UHMWPE fibers and the location of the final fracture line was examined. It was found from these experimental results that the fracture tends to occur along the regions with low area fraction of fibers or along those with low area fraction of fiber/matrix boundaries. This fact suggests that the fracture location of SRPs is predictable from the distribution of reinforcing fibers.

New Concept Manufacturing Steering Column Console in Composite Materials

2015 ◽  
Vol 1128 ◽  
pp. 187-195
Author(s):  
Lucian Eugen Rad ◽  
Thomas Heitz ◽  
Anghel Chiru
Keyword(s):  
Composite Materials ◽  
Carbon Fiber ◽  
Mechanical Performance ◽  
Space Technology ◽  
Fiber Reinforced ◽  
Reinforced Plastics ◽  
Fiber Reinforced Plastics

Based on the requirements of achieving lightweight components and mechanical performance, the paper aims to present the structure of technology for use fiber reinforced plastics, especially plastics reinforced with carbon fiber wrap winding space technology and additional tests results for steering column console.

Precision Drilling of Carbon Fiber Reinforced Plastics with Ball Nose End Mills

2016 ◽  
Vol 10 (3) ◽  
pp. 334-340 ◽  
Author(s):  
Shigehiko Sakamoto ◽  
◽  
Keyword(s):  
Composite Materials ◽  
Carbon Fiber ◽  
Cemented Carbide ◽  
Fiber Reinforced ◽  
Carbon Fiber Reinforced Plastics ◽  
Reinforced Plastics ◽  
End Mills ◽  
Fiber Reinforced Plastics ◽  
Carbon Fiber Reinforced ◽  
Coated Cemented Carbide

Carbon Fiber Reinforced Plastics (CFRP) is well known as a Carbon Fiber Reinforced Plastics (CFRP) is well known as a difficult-to-cut material that has very strong physical and mechanical characteristics. Drilling technique of CFRP that is one of the most important cutting operations is currently carried out in the aviation and automotive industries, among others. Parts manufactured from CFRP have many precision holes used as rivet holes and for various purposes. There are typicaly many problems involved in the precision drilling processes of CFRP plate such as burrs, chippings and delaminations of composite materials, and the rapid wear of the drilling tools. In this research study, various twist drill bits, square end mills and ball noses end mills made of materials including cemented-carbide, TiAlN PVD-coated cemented carbide, Diamond-Like Carbon (DLC) coated cemented carbide and high-speed steel, are tested. CFRP drilling tests without coolant are carried out on vertical machining centers. It is found that the ball nose end mill is the most suitable for drilling CFRP composite materials.

ELASTIC PROPERTIES OF CNT-ENGINEERED POLYMER COMPOSITES USING MULTI-LEVEL MECHANICS APPROACH

2011 ◽  
Vol 03 (04) ◽  
pp. 271-289 ◽  
Author(s):  
SUNIL C. JOSHI ◽  
WILLIAM TOH
Keyword(s):  
Composite Materials ◽  
Elastic Properties ◽  
Reinforced Plastics ◽  
Modeling Process ◽  
Mechanics Of Materials ◽  
Unit Cells ◽  
Fiber Reinforced Plastics ◽  
Micro Level ◽  
Multi Level ◽  
Matlab Programming

There has been increasing attention to utilizing carbon nanotubes (CNTs) as nano-fillers in polymers and polymer matrix composite materials, such as carbon fiber reinforced plastics. However, the understanding of how randomly oriented CNTs affect mechanical properties of such CNT-engineered composites is limited. This paper serves to develop an analytical model for determining the elastic properties of CNT-engineered composite materials using a mechanics of materials approach. Analysis of the properties was constructed progressively using material unit cells starting from the nano level, to the micro level, and finally, to the macro level. MATLAB programming platform was used to facilitate simulation of the modeling process. Typical simulation cases of the CNT-engineered composite materials are presented in comparison with published experimental and other data, where appropriate.

Utilization of Waste from Mechanical Processing of Carbon Composites for Secondary Friction Materials

2021 ◽  
Vol 29 (1) ◽  
pp. 89-92
Author(s):  
B.V. Boytsov ◽  
◽  
L.R. Vishnyakov ◽  
M.E. Kazakov ◽  
V.V. Krivonos ◽  
...  
Keyword(s):  
Composite Materials ◽  
Carbon Fiber ◽  
Polymer Composite ◽  
Polymer Composite Materials ◽  
Carbon Composites ◽  
Mechanical Processing ◽  
Friction Materials ◽  
Carbon Fiber Reinforced Plastics ◽  
Reinforced Plastics ◽  
Fiber Reinforced Plastics

The problem of recycling waste from mechanical processing of polymer composite materials – carbon fiber reinforced plastics - is considered. It is proposed to compact the dust-like fragments into secondary friction materials, which were tested in air and water.

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