Influence Factors of Compressive Performance of Composite Foam Sandwich Tube

2013 ◽  
Vol 405-408 ◽  
pp. 740-743
Author(s):  
Feng Li ◽  
Kang Xu ◽  
Yan Na Wang ◽  
Jian Ping Wang
Keyword(s):  
Three Dimensional ◽  
Influence Factors ◽  
Single Layer ◽  
High Strength ◽  
Resin Matrix ◽  
Composite Foam ◽  
Damage Models ◽  
Layer Composite ◽  
Compressive Performance ◽  
Resin Matrix Composite

Composite foam sandwich tube, which is a sandwich structure, improves stability of the tube and strength for use compared with single-layer composite, and is available in civil engineering as bearing member of light weight, high strength, and corrosion resistance. Axial compression experiment was made for fiber reinforced resin matrix composite foam sandwich tube which is laid in 5 different ways, and the comparing analysis on damage models was made according to experimental phenomenon. The laws of influence is preliminarily recognized by analyzing influence to foam sandwich tube of fiber laying, modulus of fiber, three dimensional elastic modulus ratio, tube radius, tube thickness.

Coupling Numerical Simulation of Resin Matrix Composites about Temperature and Degree of Cure Fields by Hot-Press Forming

2013 ◽  
Vol 788 ◽  
pp. 43-47
Author(s):  
Fei Sun ◽  
Dun Ming Liao ◽  
Peng Xu ◽  
Chang Chun Dong
Keyword(s):  
Three Dimensional ◽  
Exothermic Peak ◽  
Resin Matrix ◽  
Transient Temperature ◽  
Heating Process ◽  
Curing Process ◽  
Hot Press ◽  
Degree Of Cure ◽  
Resin Matrix Composite ◽  
The Impact

In this paper, a coupled numerical model of three-dimensional transient temperature field and degree of cure field for resin matrix composite curing process was developed. Using this model the hot-press curing process of the plate-shaped composite parts were simulated with considering the impact of tools and auxiliary materials. Thus, the temperature and degree of cure fields distribution in the entire process cycle were obtained. Numerical results show that the curing of the composite has a certain sequence. At the beginning, the composite is first curing at the boundary and gradually to the center. At the end stage, because of the higher curing rate, the center released a large amount of heat which makes the boundary curing simultaneously with center. In addition, there is a significant exothermic peak during the curing process. And the peak temperature is higher when it was closer to the center. This research effectively provides reference for optimizing the heating process parameters to improve product quality.

Synthesis and Characterization of Carbon Nanofiber with Reinforced Polymer Resin Matrix Composite

Nano Hybrids ◽  
2016 ◽  
Vol 10 ◽  
pp. 20-27 ◽  
Author(s):  
S. Nallusamy ◽  
N. Manikanda Prabu
Keyword(s):  
Epoxy Resin ◽  
Carbon Nanofiber ◽  
High Strength ◽  
Nano Particles ◽  
Resin Matrix ◽  
X Ray Diffraction ◽  
Material Development ◽  
Polymer Resin ◽  
Nano Fiber ◽  
Resin Matrix Composite

Polymer composite with reinforced fiber is a remarkable development in the field of engineering materials. The applications of composite materials have significantly increased in Defense, Aeronautical and Automobiles because of its specific modulus and high strength characteristics. In composite material development, nano particles reinforcement and nano fiber reinforcement are the most recent methods developed. In this research electrospun carbon nanofiber reinforced mat with polymer epoxy resin composites was prepared. X-ray diffraction, scanning electron microscope and ultrasonic scanning were used to study the morphology and the defect on the specimens for analyzing the structural conditions of the samples for determining the mechanical properties. The result clearly indicates that the Carbon Nanofiber (CNF)/ Polyvinyl Alcohol (PVA) mat improves the flexural strength of the epoxy resin and that 0.015% CNF in PVA gives a better mechanical strength.

Finite Element Analysis of the Prestressed Composite Pipes

2014 ◽  
Vol 687-691 ◽  
pp. 440-443
Author(s):  
Qian Yu Huang ◽  
Xiao Yu Zhang
Keyword(s):  
Constitutive Model ◽  
Matrix Composite ◽  
High Strength ◽  
Resin Matrix ◽  
Cement Matrix ◽  
Matrix Composites ◽  
Corrosion Prevention ◽  
The Matrix ◽  
Resin Matrix Composite ◽  
Composite Pipes

This topic develop the matrix composite pipes which has the ability of corrosion prevention and antiseep, also has the high strength of extension and stability, by using huge advantage of the corrosion prevention and antiseep performance of resin matrix composite, the high strength of extension of carbon steel, and also, the high stiffness of cement matrix composites. We design and optimize the structure of matrix composite pipes by study the relationship between deformation coordination based on the viscoelastic constitutive model of resin matrix composite, the homogeneity elastic constitutive model of the cement matrix composites. We obtain a basic method of design the matrix composite pipes from studying from theoretical analysis and numerical simulation.

The Research of Thermosetting Resin Matrix Composite Reinforcing Application in the Web of Truss Bridge

2012 ◽  
Vol 531 ◽  
pp. 638-641
Author(s):  
Li Wei ◽  
Guang Qing Zhou ◽  
Jia Guo Zheng ◽  
Kun Liang Liu
Keyword(s):  
Three Dimensional ◽  
Steel Structure ◽  
Resin Matrix ◽  
Three Dimensional Model ◽  
Finite Element Software ◽  
Concrete Members ◽  
Long Span ◽  
Long Span Bridge ◽  
Resin Matrix Composite ◽  
Truss Bridge

A significant number of concrete members were strengthened by carbon fiber reinforced polymer (CFRP).However there are only a few applications in strengthening steel structure with CFRP. The three-dimensional model of the long span bridge is made by using the finite element software ANSYS and do the force analysis of it ,then make composites reinforcement in order to Improve the structure strength and increase bridge life. The conclusion received of this paper is that composite patch at the end of web is more effective than in the middle of web. By picking up the stress distribution of every layer, the law of stress is obtained.

Development of Reinforced Structure Designed Composite Pavement

2014 ◽  
Vol 887-888 ◽  
pp. 793-796
Author(s):  
Zhong Ming Hou ◽  
Ling Duan ◽  
Kai Yao ◽  
Xiao Wen Zhao
Keyword(s):  
Composite Material ◽  
High Strength ◽  
Resin Matrix ◽  
Forming Process ◽  
Specific Strength ◽  
Road Pavement ◽  
Vacuum Forming ◽  
Resin Matrix Composite ◽  
Strength And Stiffness ◽  
Surface Plate

For the problems such as layering and splitting of traditional sandwich structure composite, a resin matrix composite with lattice and interface reinforced structure has been designed, and using vacuum forming process was developed in this paper. The composite material has high specific strength and stiffness. On this basis, a road pavement developed by this composite material used in engineer urgent was designed. This composite pavement with characters of light weight, high strength and good toughness, and its surface plate was hard, wear-resistant and non-slip. The connection between the pavements was designed for quick assembling, which could make the pavement assemble operation was simple, fast and reliable.

Three-dimensional and highly ordered porous carbon–MnO2 composite foam for excellent electromagnetic interference shielding efficiency

RSC Advances ◽  
2016 ◽  
Vol 6 (103) ◽  
pp. 100713-100722 ◽  
Author(s):  
Pinki Rani Agarwal ◽  
Rajeev Kumar ◽  
Saroj Kumari ◽  
Sanjay R. Dhakate
Keyword(s):  
Porous Carbon ◽  
Electromagnetic Interference ◽  
Three Dimensional ◽  
High Strength ◽  
Carbon Matrix ◽  
Carbon Foam ◽  
Emi Shielding ◽  
Electromagnetic Interference Shielding ◽  
Composite Foam ◽  
Ordered Porous

The combination with MnO2 nanoparticles in carbon matrix, the carbon foam exhibit absorption dominating specific EMI shielding value of −150 dB cm3 g−1 with high strength of 7.8 MPa.

Thermal Conductivity of Polyimide Resin-Based Composite with Cu Fibers

2016 ◽  
Vol 848 ◽  
pp. 43-48
Author(s):  
Dan Zhang ◽  
Shuang Xi Wang ◽  
Gao Shan Liu ◽  
Wen Jun Wang ◽  
Feng Xiao
Keyword(s):  
Thermal Conductivity ◽  
Thermal Property ◽  
Matrix Composite ◽  
Copper Powder ◽  
Industrial Application ◽  
Three Dimensional ◽  
Resin Matrix ◽  
Wear Loss ◽  
Dimensional Network ◽  
Resin Matrix Composite

In some industrial application, thermal property of resin plays an important role as same as strength. Many attempts have been made to enhance the thermal conductivity of resin matrix composite. In this paper, the copper fibers were introduced to the polyimide-based composite. The experimental results showed that the thermal conductivity of polyimide-based composite with 15% Cu fibers was as high as 8.62W/mK which is more than three times that with Cu powders. The PI-Cu composites with copper fiber had a much lower wear loss than that with copper powder. The forming of three-dimensional network by Cu fibers makes it possible that the heat can conduct by electrons in the resin-based composite with Cu fibers.

Characterization of a monolayer graphitic structure

1994 ◽  
Vol 52 ◽  
pp. 760-761
Author(s):  
X. Lin ◽  
X. K. Wang ◽  
V. P. Dravid ◽  
J. B. Ketterson ◽  
R. P. H. Chang
Keyword(s):  
Three Dimensional ◽  
Single Layer ◽  
Synthesis Process ◽  
Graphitic Structure ◽  
Positive Gaussian Curvature ◽  
Graphitic Sheet ◽  
Structural And Electronic Properties ◽  
New Material ◽  
Hexagonal Network

For small curvatures of a graphitic sheet, carbon atoms can maintain their preferred sp2 bonding while allowing the sheet to have various three-dimensional geometries, which may have exotic structural and electronic properties. In addition the fivefold rings will lead to a positive Gaussian curvature in the hexagonal network, and the sevenfold rings cause a negative one. By combining these sevenfold and fivefold rings with sixfold rings, it is possible to construct complicated carbon sp2 networks. Because it is much easier to introduce pentagons and heptagons into the single-layer hexagonal network than into the multilayer network, the complicated morphologies would be more common in the single-layer graphite structures. In this contribution, we report the observation and characterization of a new material of monolayer graphitic structure by electron diffraction, HREM, EELS.The synthesis process used in this study is reported early. We utilized a composite anode of graphite and copper for arc evaporation in helium.

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