scholarly journals MODELING OF A COMPOSITE MATERIAL FOR LASER DIMENSIONAL PROCESSING

2021 ◽  
pp. 46-50
Author(s):  
S. I. Yaresko ◽  
S. N. Balakirov
Keyword(s):  
Finite Element ◽  
Composite Material ◽  
Temperature Field ◽  
Carbon Fiber ◽  
Polymer Composite ◽  
3D Model ◽  
Polymer Composite Material ◽  
Element Calculation ◽  
Cutting Modes ◽  
Dimensional Processing

An algorithm for constructing a geometric 3D model of a part made of a polymer composite material VKU-39 based on carbon fiber, intended for further finite element calculation of the temperature field in the part during laser dimensional processing and the choice of optimal cutting modes, was proposed and realized.

scholarly journals DETERMINATION OF DEFORMATION IN MESH COMPOSITE STRUCTURE UNDER THE ACTION OF COMPRESSIVE LOADS

2020 ◽  
Vol 17 (35) ◽  
pp. 599-608 ◽  
Author(s):  
Alexander A. OREKHOV ◽  
Yuri A. UTKIN ◽  
Polina F. PRONINA
Keyword(s):  
Composite Material ◽  
Carbon Fiber ◽  
Bearing Capacity ◽  
Polymer Composite ◽  
Experimental Studies ◽  
Polymer Composite Material ◽  
Lightweight Mesh ◽  
Carbon Filler ◽  
Selection Of

One of the significant innovative technologies is the creation of large-sized structures that work for a long time in space and meet stringent restrictions on overall mass characteristics. Among these structures, in the first place, is the section of bearing truss (BT). This article presents the results of experimental studies of sectors of load-bearing trusses of mesh design for compression. Recently, composite mesh cylindrical shells are used as spacecraft housings. The mesh shell is a supporting structure to which the instruments and mechanisms of the spacecraft are attached. The truss section is made of cross-linked polymer composite material with carbon fibers. The objective of the tests is to confirm the possibility of creating a lightweight mesh construction using a carbon fiber reinforced polymer composite material. To achieve this goal, the authors were assigned the following tasks: selection of carbon filler of polymer composite materials (PCM); selection of PCM binder; determination of the degree of carbon fiber reinforcement; choice of the number and orientation paths of spiral ribs, number of ring ribs and the sizes of individual ribs. As a result of the research, the calculated indicators for ensuring the bearing capacity and stiffness under the application of axial compressive load were obtained. At the same time, with the determination of bearing capacity, the deformation characteristics of the structure were twice determined in order to confirm their repeatability, as well as linear nature of the dependence of axial and radial deformations as a result of the applied load.

Experimental Investigation and Finite Element Simulation of Fracture Process of Polymer Composite Material with Short Carbon Fibers

2015 ◽  
Vol 725-726 ◽  
pp. 943-948 ◽  
Author(s):  
Ivan Maniak ◽  
Boris Melnikov ◽  
Artem S. Semenov ◽  
Sergey Saikin
Keyword(s):  
Finite Element ◽  
Composite Material ◽  
Finite Element Simulation ◽  
Polymer Composite ◽  
Carbon Fibers ◽  
Strength Properties ◽  
Polymer Composite Material ◽  
Tension Tests ◽  
Element Simulation ◽  
Short Carbon

This work is devoted to the research of mechanical and strength properties of polymer composite material with short carbon fibers produced by injection molding technology. The material is PEEK90HMF20 with 20 % of carbon fibers mass fraction and based on polyether ether ketone (PEEK) polymer matrix. Mechanical and strength properties were researched on samples that had been cut from molded plates. A set of tension tests was performed and stress-strain diagrams of samples with different orientation in relation to the global direction of injection were obtained. Two-step homogenization procedure and pseudo-grains failure model were used to describe composite material behavior. The material model parameters were calibrated with experimental data by means of reverse-engineering procedure. Finite element simulation of tension tests was performed to check the quality of built model from the point of view of its ability to predict failure.

scholarly journals Prospects for the Use of Secondary Carbon Fibers

2020 ◽  
Vol 6 (3) ◽  
pp. 39-43
Author(s):  
G. Shaidurova ◽  
E. Gatina ◽  
Ya. Shevyakov
Keyword(s):  
Composite Material ◽  
Life Cycle ◽  
High Temperature ◽  
Composite Materials ◽  
Carbon Fiber ◽  
Polymer Composite ◽  
Carbon Fibers ◽  
Polymer Composite Material ◽  
Physicomechanical Characteristics ◽  
Secondary Carbon

The results of studies on the possibility of using secondary carbon fiber extracted from the volume of spent polymer composite material by high-temperature pyrolysis for reinforcing chipboards are reflected. Studies were conducted on the physicomechanical characteristics of reinforced slabs, which showed a significant increase in performance. The results obtained make it possible to assess the possibility of the promising use of secondary fibers, which will provide a solution to the problem of completing the life cycle of polymer composite materials.

scholarly journals Determination of the influence of a filler on the properties of composite materials based on polytetrafluorothylene for tribosystems of mechanisms and machines

2021 ◽  
Vol 4 (12(112)) ◽  
pp. 61-70
Author(s):  
Volodymyr Dudin ◽  
Dmytro Makarenko ◽  
Oleksii Derkach ◽  
Yevhen Muranov
Keyword(s):  
Composite Material ◽  
Composite Materials ◽  
Carbon Fiber ◽  
Polymer Composite ◽  
Tribological Properties ◽  
Mechanical Characteristics ◽  
Low Cost ◽  
Polymer Composite Material ◽  
Basic Material ◽  
Operating Modes

This paper reports a comprehensive laboratory study into the thermophysical, physical-mechanical characteristics, and tribological properties of the designed composite materials based on polytetrafluoroethylene. In the structures of machines and mechanisms, a significant role belongs to the tribological conjugations made from polymeric and polymer-composite materials. The reliability of machines, in general, depends to a large extent on the reliability of movable connections. Composite materials of nonmetallic origin have a low cost, they are resistant to most aggressive chemicals and are capable of operating under conditions without lubrication. It was established that the characteristics and properties of materials must be adapted to the working conditions of separately considered tribological conjugations. The mechanisms of thermal destruction have been established, both in the basic material and the carbon fiber based on it. It was found that carbon fiber, regardless of its content (quantity) in the polymer-composite material based on polytetrafluoroethylene, is mainly oriented perpendicular to the force application plane. It was found that with an increase in the carbon fiber content from 10 to 40 % by weight, the heat capacity decreases by 16‒39 % compared to the main material. The optimal operating modes for the designed composite materials have been substantiated on the basis of a pv factor: under a dry friction mode – up to 4 MPa∙m/s; at friction with lubrication – up to 36.4 MPa∙m/s. The dependence has been established of the friction coefficient on the operating modes of a composite material based on polytetrafluoroethylene containing 20 % by weight of carbon fiber when lubricated with oil and water. The results reported here make it possible to synthesize the physical-mechanical characteristics and tribological properties of composite materials in accordance with the required modes of tribological conjugation.

Material adaptation technology for automated tape laying of aviation polymer composite material

2019 ◽  
Vol 0 (2) ◽  
pp. 22-28
Author(s):  
A.M. Kudrin ◽  
◽  
O.A. Karaeva ◽  
K.S. Gabriel’s ◽  
◽  
...  
Keyword(s):  
Composite Material ◽  
Polymer Composite ◽  
Polymer Composite Material
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