Composite Material Research Papers - Academia.edu (original) (raw)

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- Engineering, Kinetics, Modeling, Heat Transfer
- by Christian Poppe
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- Materials Science, Composite Material

In this study, Cu-Al-B4C metal matrix composite (MMC) material was produced by using hot pressing at powder metallurgy (PM) process. Powder samples were prepared in proportion as 5%, 10% and 20% B4C was added in to Cu-%5 Al powder mixture. Prepared powder samples subject to hot pressing at 600 oC, 4 minutes under argon inert gas atmosphere, 30 MPa/cm2 pressure. Pressed specimens were investigated hardness and microstructure. At the result of the experiments, it's fastened down; B4C affected the hardness and microstructure of the materials, which added at the different rates in matrix.

- by ZORAN GOMZI
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- Materials Science, Kinetics, Modeling, Heat Transfer
- by L. Toubal
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- Mechanical Engineering, Civil Engineering, Composites, Fatigue

Epoxidized natural rubber–alumina nanoparticle composites were prepared by melt compounding with an internal mixer for a constant filler loading of 10 phr. Mixer parameters such as the mixing temperature, mixing time, and rotor speed were screened and optimized with response surface methodology to maximize the impact strength. The parameters were selected as three independent variables and the impact strength (J/m) was selected as the response in a screening factor study. The mixing temperature and its interaction terms were identified as insignificant factors with a P value greater than 0.0500. The optimum calculated values of the tested variables (rotor speed and mixing time) for the maximum impact strength were found to be a rotor speed of 60 rpm and a mixing time of 6 min with a predicted impact strength of 208.88 J/m. These predicted optimum parameters were tested in real experiments. The final impact strength was found to be close to the predicted value of 215.84 J/m, with only a 3.33% deviation. © 2009 Wiley Periodicals, Inc. J Appl Polym Sci, 2010

- by mariyam ghazali
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- Engineering, Response Surface Methodology, Nanocomposites, Mixing
- by Douglas Ruthven
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- Engineering, Magnetic Properties, Polyethylene, Composite Material
- by Mahesh Kadgaonkar
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- Engineering, Adsorption, Heterogeneous Catalysis, Photocatalysis
- by praveen pinnoji
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- Materials Science, Fracture and cohesive zone model, Numerical Simulation, Impact
- by Maicon Arcine
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- Materials Science, Composite Material, Carbon fiber reinforced polymer
- by Giulio Altoé
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- Materials Science, Composite Material
- by Liping Cai
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- Engineering, Materials Science, Materials, Adhesive

Metal matrix composites with high interface density are produced via severe plastic co-deformation of multiphase alloys. 1–15 Corresponding compounds are first prepared by liquid or powder metallurgy3–12 or through restacking solids of different composition. 2 Subsequent extreme straining, to promote intense microstructure refinement, proceeds by wire drawing, ball milling, accumulative roll bonding, damascene forging, equal channel angular extrusion, friction, or highpressure torsion. 7

- by R. Pippan
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- Materials Engineering, Mechanical Engineering, Materials Science, Plasticity
- by kirti wasnik
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- Engineering, Materials Science, Biomaterials, Tissue Engineering

Selective Laser Sintering (SLS) produces three-dimensional objects directly from a computer-aided design (CAD) solid model, without part-specific tooling, by repeatedly depositing thin layers of fusible powder and selectively sintering... more

- by Joel Barlow
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- Engineering, Materials Science, Carbon Dioxide, Computer Aided Design
- by Vistasp Karbhari
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- Materials Engineering, Composite Material, Fiber Reinforced Polymer, Large Scale

The exoskeleton of the lobster Homarus americanus is a multiphase biological composite material which consists of an organic matrix (crystalline α-chitin fibers and various types of non-crystalline proteins) and minerals (mainly calcite). In this study we discuss experimental data about the mesoscopic structure and the crystallographic texture (orientation distribution) of the α-chitin–protein fiber network in this material. The synchrotron measurements reveal very strong crystallographic textures of the α-chitin. According to these data, a large fraction of the α-chitin lattice cells is arranged with their longest axis parallel to the normal of the surface of the exoskeleton. Additionally, a smaller fraction of the α-chitin cells is oriented with their longest axis perpendicular to the cuticle surface. These structural investigations reveal the pronounced role of crystallographic orientation distributions in mineralized biological composite materials which may be of relevance for an improved understanding of biological and bio-inspired nano-composites.

- by Dierk Raabe
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- Materials Engineering, Mechanical Engineering, Materials Science, Crystallography
- by Jialai Wang
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- Mechanical Engineering, Civil Engineering, Aerospace Engineering, Modeling

The opportunities provided by the use of Carbon Fiber Reinforced Polymer (CFRP) composites for the seismic repair of reinforced concrete (RC) structures were assessed on a full-scale dual system subjected to pseudodynamic tests in the... more

- by Gaetano Manfredi
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- Engineering, Civil Engineering, Structures and Fire Engineering, FRP

The in-vivo response to a composite material obtained with polyetherimide (PEI) reinforced with carbon/glass fibers was investigated by histological methods by implanting cylinders in muscle and in bone of the New Zealand White rabbit. A common metallic alloy, widely used in orthopaedic surgery, was used as control (Stellite). The aim of the study was to analyze the biological response towards the surface of the material. Composite implants and metallic implants did not induce adverse or inflammatory reactions. The morphological picture produced was similar, in muscle and in bone, for both materials. In muscle, cylinders were confined by an extremely thin fibrous layer and the overall appearance of the muscular tissue was normal. In bone, cylinders were confined by a nearly annular rim of newly formed bone. From these data it is possible to derive that the response to PEI-based composite material is comparable with the response to metallic substrate and, then, the material can be su...

- by Roberto De Santis and +1
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- Materials Engineering, Biomedical Engineering, Composite Material, Glass Fiber
- by Nicoleta Sofian
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- Materials Engineering, Polymer Engineering, Materials Science, Polymer
- by Afshin Falsafi
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- Materials Science, Viscoelasticity, Contact Mechanics, Contact angle
- by Deborah Chung
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- Civil Engineering, Materials Science, Water Treatment, Building
- by Mohammed Farid
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- Engineering, Mechanical Engineering, Economics, Scanning Electron Microscopy
- by Supakorn Somana
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- Civil Engineering, Materials Science, Structural Engineering, Composite Material

In today’s world humans are in rat race due to which they don’t take care of their health due to which they tend to have improper bone growth density and growth this leads to number of fracture and in severe cases amputation due to lifestyle diseases in extreme cases and in cases of accidents. Prosthetic limbs are artificial limbs that are used to replace the original human limbs which a person lost due to any injury, accident and disease. It was found that there is a adhere need to find an optimized cost-effective method for amputated athletes so that they can run at same efficiency with their artificial limbs. This is very expensive medical equipment and its reliability is not that great so taking that into consideration there was a need to find an alternative design or material regarding the same. As the world is going towards bio degradable and bio composite as it is easy to work with, ecofriendly and same time inexpensive. There are many bio composites to choose from sisal, ban...

- by Anirudh Kohli
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- Materials Science, Multidisciplinary, Composite Material, IOP conference series-MSE
- by John Joannopoulos
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- Engineering, Physics, Microwave, Band Structure
- by Steven Cermak
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- Chemical Engineering, Adsorption, Heterogeneous Catalysis, Conversion
- by Michael Chajes
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- Engineering, Finite element method, Numerical Simulation, Composite Material
- by Mikio Yamanoi
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- Engineering, Modeling, Numerical Simulation, Mathematical Sciences

- by Antonio Merolli
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- Materials Engineering, Biomedical Engineering, Composite Material, Glass Fiber
- by David Hukins
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- Materials Engineering, Finite Element, Composite Material, Shear Stress
- by Ivalina Avramova
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- Engineering, Kinetics, Natural rubber, Durability
- by Mariano Pracella
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- Materials Engineering, Chemical Engineering, Kinetics, Liquid Crystals
- by Paki Turgut
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- Mechanical Engineering, Chemical Engineering, Materials Science, Manufacturing

Epoxy resin will continue to be in the forefront of many thermoset applications due to its versatile properties. However, with advancement in manufacturing, changing societal outlook for the chemical industries and emerging technologies that disrupt conventional approaches to thermoset fabrication, there is a need for a multifunctional epoxy resin that is able to adapt to newer and robust requirements. Epoxy resins that behave both like a thermoplastic and a thermoset resin with better properties are now the norm in research and development. In this paper, we viewed multifunctionality in epoxy resins in terms of other desirable properties such as its toughness and flexibility, rapid curing potential, self-healing ability, reprocessability and recyclability, high temperature stability and conductivity, which other authors failed to recognize. These aspects, when considered in the synthesis and formulation of epoxy resins will be a radical advance for thermosetting polymers, with a lot of applications. Therefore, we present an overview of the recent finding as to pave the way for varied approaches towards multifunctional epoxy resins.

- by Jaworski C . Capricho
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- Materials Science, Epoxy, Composite Material, Electrical Conductivity
- by Tuula Tuhkanen
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- Engineering, Chemistry, Design, Production
- by Recai KUŞ
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- Materials Engineering, Mechanical Engineering, Materials Science, Microstructure
- by Bill Clyne
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- Materials Engineering, Mechanical Engineering, Materials Science, Electron Microscopy
- by luigi preziosi
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- Engineering, Multiphase Flow, Composite Materials, Numerical Simulation
- by Jayashree Bijwe
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- Materials Engineering, Mechanical Engineering, Experimental Design, Wear

The role of mechanical properties of composite material in dome contour design has been investigated. It has been shown that the optimal dome profile depends on the ratio of longitudinal Young's modulus to transverse Young's... more

- by Kenan Genel
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- Materials Engineering, Mechanical Engineering, Zinc, Composite Material
- by Pornsawan Amornsakchai
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- Engineering, Morphology, Composite Material, Fractography
- by Liliane LEGER
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- Mechanical Engineering, Aerospace Engineering, Modeling, Comparative Study

Use of pyrolytic carbon from cellulose has been limited in practice to activated adsorbent carbon, but cellulose-derived carbon retaining the nanoscale microfibrillar morphology offers rich possibilities as an advanced material. Here we developed novel methods to prepare such materials by an improved drying of wet cellulose prior to pyrolysis. This procedure is an adaptation from electron microscopy techniques, i.e. rapid freeze drying of suspension and solvent exchange drying, both being effective in preventing coagulation of cellulose microfibrils/microcrystals. Pyrolytic carbon from such material has a large external surface area, with the graphitic carbon crystallites roughly aligned along the fiber axis. These features are potentially useful in developing novel carbon nanomaterials for electrodes, catalyst supports, or composite material elements.

- by Yoshiharu Nishiyama
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- Materials Engineering, Electron Microscopy, Cellulose, Composite Material
- by Tinh Nguyen
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- Engineering, Water, Kinetics, Brackish Water