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.

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.

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.

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.

The Static Collapse Characteristics of CFRP Side Members Due to Stacking Condition

2006 ◽  
Vol 326-328 ◽  
pp. 1055-1058
Author(s):  
Kil Sung Lee ◽  
In Young Yang
Keyword(s):  
Composite Materials ◽  
Carbon Fiber ◽  
Energy Absorption ◽  
Safety Performance ◽  
Fiber Reinforced ◽  
Carbon Fiber Reinforced Plastics ◽  
Reinforced Plastics ◽  
Fiber Reinforced Plastics ◽  
Stacking Condition ◽  
Static Collapse

Currently, stacking condition related to the energy absorption of composite materials is being considered as an issue for the structural efficiency and safety of automobiles, aerospace vehicles, trains, ships even elevators during collision. In particular, CFRP (carbon fiber reinforced plastics) composite materials have found wide applicability because of their inherent design flexibility and improved material properties. The most important objective in designing automobiles is currently to focus on environment-friendly aspect and safety performance aspect. Therefore, the designing automobile should be more concerned on the aspect of securing safety performance, but at the same time, it also should consider reducing weight of automobile structural member. In this study, CFRP (Carbon Fiber Reinforced Plastics) side members with single-hat-section shaped were manufactured. The axial static collapse tests were performed for the members using universal testing machine, and the collapse mode and energy absorption characteristics were analyzed according to stacking condition such as fiber orientation angle and shape of the section.

The Effect of Embedded Optical Fibers on the Static Mechanics of Composite Materials

2011 ◽  
Vol 233-235 ◽  
pp. 2387-2390 ◽  
Author(s):  
Heng Tian ◽  
Yun Dong Ji ◽  
Ji Hui Wang ◽  
Yan Zi Yin ◽  
Jiu Xiong Sun
Keyword(s):  
Composite Materials ◽  
Glass Fiber ◽  
Optical Fibers ◽  
Small Region ◽  
Fiber Reinforced ◽  
Reinforced Plastics ◽  
Glass Fiber Reinforced ◽  
Fiber Reinforced Plastics ◽  
Mechanics Of Composite Materials

This paper mainly investigates the effect of embedded optical fibers on the tensile and bending propertities of cross-ply glass fiber reinforced plastics. Different optical fibers and different embedded layers are both considered. The results show nearly all the specimens are varying within a small region. But 3 OF at 0°embedded in bending specimens exhibit about 18.3% reduction, and the effect of 3 OF in the under layer is more than that of 3 OF in the upper layer.

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