Hydrothermal synthesis of hydrocalumite assisted biopolymeric hybrid composites for efficient Cr(vi) removal from water

2018 ◽  
Vol 42 (5) ◽  
pp. 3371-3382 ◽  
Author(s):  
Soodamani Periyasamy ◽  
Natrayasamy Viswanathan
Keyword(s):  
Composite Materials ◽  
Hydrothermal Synthesis ◽  
Hybrid Composite ◽  
Hybrid Composites ◽  
Selective Removal

Hydrocalumite (HC) incorporated biopolymer (alginate and chitosan) based hybrid composite materials were developed for the selective removal of chromium.

scholarly journals Experimental investigation of bending characteristics of hybrid composites fabricated by hand layup method

2021 ◽  
Vol 2089 (1) ◽  
pp. 012033
Author(s):  
M Sadashiva ◽  
S Praveen Kumar ◽  
M K Yathish ◽  
V T Satish ◽  
MR Srinivasa ◽  
...  
Keyword(s):  
Composite Materials ◽  
Hybrid Composite ◽  
Polyester Resin ◽  
Hybrid Composites ◽  
Bending Test ◽  
Environment Friendly ◽  
Longitudinal Fiber ◽  
Develop Environment ◽  
The One ◽  
Better Than

Abstract The extensive applications of hybrid composite materials in the field of transportation and structural domine provide prominent advantages in the order of stiffness, strength even cost. However extend the advantages of hybrid campsites in several field such as aviation and marine even more additional properties should be inculcate in them. During production of such profitable composites poses some problems at time at decompose and processing. It’s better to develop environment friendly and reusable composites, bio hybrid composite materials such of the one. In this paper, focused on development of Eco-friendly hybrid bio composites with the ingredients of drumstick fibers, glass fiber along with polyester resin. This hybrid bio composites subjected to bending test and evaluate the characteristics of bending properties, this research evident that bending characteristics of hybrid composites with longitudinal fiber orientation better than transverse.

Development of Hybrid Composites (Al-SiC-C) Through Stir Casting: Machinability Studies

2017 ◽  
Author(s):  
Satyanarayana Kosaraju ◽  
Venu Gopal Anne ◽  
Swapnil Gosavi
Keyword(s):  
Surface Roughness ◽  
Composite Materials ◽  
Cutting Force ◽  
Hybrid Composite ◽  
Hybrid Composites ◽  
Soft Materials ◽  
Graphite Powder ◽  
Stir Casting ◽  
Depth Of Cut ◽  
Grey Relational

Composite materials are important engineering materials due to their outstanding mechanical properties. Composite materials offer superior properties to conventional alloys for various applications as they have high stiffness, strength and wear resistance. The high cost and difficulty of processing these composites restricted their application and led to the development of reinforced composites. In the last two decades, wear studies on Particulate Metal Matrix Composites (PMMCs) reinforced with various reinforcements ranging from very soft materials like graphite, talc etc., to high hardened ceramic particulates like SiCp, Al2O3 etc., have been reported to be superior to their respective unreinforced alloys. Therefore, present work focused on the study of machinability of Al based binary composites reinforced with 8.5% SiC and Al based Hybrid composite reinforced with 8.5% SiC, 2% and 4% Graphite powder (Solid lubricant) have been studied by considering the effect of process parameters such as speed, feed, depth of cut and composition of material. Binary and hybrid composite materials have been casted by stir casting methodology. Experiments have been conducted using Design of Experiments approach to reduce the number of experiments and time. The cutting force and surface roughness in turning of both the binary and hybrid materials have been measured using cutting force dynamometer (4 component kistler dynamometer) and the roughness has been measured using surface roughness tester (Marsurf M400) simultaneously. The multi objective optimization has been carried out using Grey relational based Taguchi method. It was observed that feed was the most influencing factor compared to others factors and also results shown that the performance characteristics cutting force and the surface roughness are greatly enhanced by using Grey relational Analysis.

Viscoelastic and mechanical properties of CNT-reinforced polymer-based hybrid composite materials using hygrothermal creep

2021 ◽  
Vol 29 (9_suppl) ◽  
pp. S1386-S1402
Author(s):  
S Srikant Patnaik ◽  
Tarapada Roy
Keyword(s):  
Mechanical Properties ◽  
Carbon Nanotubes ◽  
Composite Materials ◽  
Multiwalled Carbon Nanotubes ◽  
Hybrid Composite ◽  
Viscoelastic Properties ◽  
Hybrid Composites ◽  
Multiwalled Carbon ◽  
Ultrasonic Probe ◽  
Reinforced Polymer

In the present work, a combination of experimental and numerical procedure is proposed to study the effects of different hygrothermal conditions on the creep strain, viscoelastic properties of nanocomposites, and mechanical properties of such nanocomposite-based carbon fiber–reinforced polymer (CFRP) hybrid composite materials. Ultrasonic probe sonicator is used to randomly disperse the multiwalled carbon nanotubes into an epoxy to minimize agglomerations. Dynamic mechanical analysis is employed to conduct the creep tests under different hygrothermal conditions of such nanocomposite samples. The Findley power law is used to obtain the long-term creep behavior of nanocomposite materials. Prony series is used to determine the viscoelastic properties of nanocomposite material in the frequency domain. Coefficient of moisture expansion (CME) is independent of moisture concentration; thus, CME of the nanocomposite is also determined. Strength of materials and Saravanos–Chamis micromechanics (SCM) have also been utilized to obtain the mechanical properties of such hybrid composite materials under different hygrothermal conditions. It has been found that the inclusion of multiwalled carbon nanotubes in the nanocomposite and hybrid composites improves storage modulus and loss factor (i.e., tan δ) compared to the conventional CFRP-based composite materials under hygrothermal conditions.

EFFECT OF HYBRIDIZATION ON COMPRESSIVE PROPERTIES OF WOVEN CARBON, GLASS AND KEVLAR HYBRID COMPOSITES

2015 ◽  
Vol 76 (9) ◽  
Author(s):  
Norhafiza Muhammad ◽  
Aidah Jumahat ◽  
Nor Merlisa Ali
Keyword(s):  
Compressive Strength ◽  
Composite Materials ◽  
Hybrid Composite ◽  
Composite Laminates ◽  
Composite Structures ◽  
Hybrid Composites ◽  
Optical Microscope ◽  
Strain Diagram ◽  
Compressive Properties ◽  
Modes Of Failure

The growing use of high-performance materials, which are made of hybrid composite systems, has increased rapidly in engineering applications. Hybridization of woven carbon, glass and Kevlar fibre offers better mechanical properties of composite materials. This is also an effective way to reduce the cost of advanced composites. At the moment information on compressive properties of hybrid composites is very limited. It is well known that the compressive strength of composite materials is lower than the tensile strength. Therefore, compressive strength becomes one of the most important criteria in designing composite structures. Therefore, this research is aimed to evaluate the compressive properties of hybrid composites and compare to the properties of neat systems. Hybrid composite samples were fabricated using a vacuum bagging system. The compressive properties of Kevlar hybrid with carbon and glass composites were studied using an INSTRON 3382 universal machine with a constant crosshead speed of 1 mm/min. The compressive properties were determined based on the stress-strain diagram. It was observed that for hybrid composites, placing carbon woven cloth layers in the exterior and Kevlar woven cloth in the interior showed higher compressive strength than placing glass woven cloth layers in the exterior and Kevlar woven cloth in the interior. The modes of failure of the hybrid composite laminates were observed and evaluated using optical microscope and scanning electron microscopy (SEM).

scholarly journals Mechanical and corrosion properties of AlCu matrix hybrid composite materials

2019 ◽  
Vol 51 (1) ◽  
pp. 81-92 ◽  
Author(s):  
Serkan Islak
Keyword(s):  
Corrosion Resistance ◽  
Composite Materials ◽  
Hybrid Composite ◽  
Hybrid Composites ◽  
Rupture Strength ◽  
Corrosion Properties ◽  
Pressing Method ◽  
Transverse Rupture Strength ◽  
The Matrix ◽  
Mechanical And Corrosion Properties

In this study, AlCu matrix hybride composites with various ratios of boron carbide (B4C), hexagonal boron nitride (hBN), and graphite (Gr) were produced by using hot-pressing method. The microstructure, density, mechanical and corrosion properties of these composites were investigated. Optical microscopy, scanning electron microscopy, and X-ray diffraction were used to characterize the microstructures, and the experimental densities of the composites were measured using a helium pycnometer. The mechanical properties including the hardness and transverse rupture strength were investigated using hardness and three-point bending tests, respectively. In addition, the hybrid composites were immersed in an aqueous solution of 3.5 wt.-percent NaCl at pH 3 for potentiodynamic and corrosion rate measurements. These tests revealed that a microstructure in which reinforcing particles are almost homogeneously dispersed in the matrix was obtained. Density measurements have shown that very dense and compact hybrid AMCs are produced. The hardness and transverse rupture strength of the composites were significantly increased by particulate addition to the matrix. Depending on the type and amount of reinforcement material, differences in the corrosion resistance of the hybrid composites have been determined. The results show that AlCu-8B4C-2Gr hybrid composite material has the highest corrosion resistance among the composite materials.

scholarly journals The effect of temperature and chemical solutions on the Compressive strength of particulate hybrid composites

2014 ◽  
Vol 11 (4) ◽  
pp. 1467-1474
Author(s):  
Baghdad Science Journal
Keyword(s):  
Composite Materials ◽  
Hybrid Composite ◽  
Hybrid Composites ◽  
Mechanical Tests ◽  
Effect Of Temperature ◽  
Injection Molding Process ◽  
Alumina Powder ◽  
Molding Process ◽  
Different Temperatures ◽  
Chemical Solutions

In this work a hybrid composite materials were prepared containing matrix of polymer (polyethylene PE) reinforced by different reinforcing materials (Alumina powder + Carbon black powder CB + Silica powder). The hybrid composite materials prepared are: • H1 = PE + Al2O3 + CB • H2 = PE + CB + SiO2 • H3 = PE + Al2O3 + CB + SiO2 All samples related to electrical tests were prepared by injection molding process. Mechanical tests include compression with different temperatures and different chemical solutions at different immersion times The mechanical experimentations results were in favour of the samples (H3) with an obvious weakness of the samples (H1) and a decrease of these properties with a rise in temperature and the increasing of the immersion times in the chemical solutions.

scholarly journals Karakteristik Komposit Hibrida Serat Basalt – Karbon Epoksi Resin pada Perendaman Air Laut

Jurnal METTEK ◽  
2019 ◽  
Vol 5 (1) ◽  
pp. 57
Author(s):  
Tri Siswanto Kamid ◽  
I.D.G Ary Subagia ◽  
I Ketut Gede Wirawan
Keyword(s):  
Composite Materials ◽  
Corrosion Rate ◽  
Hybrid Composite ◽  
Immersion Time ◽  
Sea Water ◽  
Hybrid Composites ◽  
Water Immersion ◽  
Basalt Fiber ◽  
Injection Molding Process ◽  
Molding Process

Material komposit dengan laminasi serat penguat karbon dan basalt telah diproduksi melalui proses cetakan injeksi. Tujuan penelitian adalah menganalisa laju korosi material komposit oleh air laut. Perendaman komposit hibrida untuk masing-masing variasi dilakukan pada air laut dengan durasi waktu perendaman selama 2 minggu, 4 minggu, dan 6 minggu. Hasil uji menunjukkan seluruh variasi komposit hibrida mengalami penyerapan dibuktikan dengan meningkatnya massa benda uji dari setiap durasi waktu perendaman. Peningkatan massa untuk masing-masing komposit hibrida sangat besar terjadi pada minggu ke-2 (dua) yaitu 3,9%  untuk CFRP, 1,4% untuk B2C3B2C3, 1,3% untuk B4C6, 1,3% untuk C2B2C2B2C2, dan 1,5% untuk BFRP. Kemudian untuk durasi perendaman selanjutnya relatif tetap (constant). Dari hasil tersebut disimpulkan bahwa perendaman komposit hibrida dengan serat basalt/carbon/epoxy sangat rendah dari minggu ke minggu. Analisa SEM menunjukkan pada setiap komposit hibrida teramati terjadi korosi disebabkan karena serat basalt memiliki kandungan besi (Fe), tetapi laju korosi sangat rendah (< 0,5%). Efek korosi ditunjukkan dengan adanya zona delaminasi yang dapat menurunkan kekuatan dan keuletan dari komposit hibrida. Composite materials with carbon fiber and basalt fiber laminates have been produced through the injection molding process. The aim is to analyze the corrosion rate of composite materials by sea water. Immersion of hybrid composites for each variation was carried out on sea water with a duration of immersion time of 2 weeks, 4 weeks and 6 weeks. The test results showed that all variations of hybrid composites experienced absorption as evidenced by the increase in the mass of the specimen from each duration of immersion time. The mass increase for each hybrid composite was very large at the second week is 3.9% for CFRP, 1.4% for B2C3B2C3, 1.3% for B4C6, 1.3% for C2B2C2B2C2, and 1,5% for BFRP. Then for the duration of subsequent immersion it is relatively constant. From these results it was concluded that immersion of hybrid composites with basalt / carbon / epoxy fibers was very low from week to week. SEM analysis showed that each hybrid composite observed corrosion due to basalt fibers having iron (Fe) content, but the corrosion rate was very low (<0.5%). Corrosion effects are indicated by a delamination zone which can reduce the strength and ductile of hybrid composites.

Mechanical properties evaluation of T800 carbon fiber reinforced hybrid composite embedded with silicon carbide microparticles

2018 ◽  
Vol 14 (3) ◽  
pp. 589-608 ◽  
Author(s):  
Rakesh Potluri
Keyword(s):  
Mechanical Properties ◽  
Silicon Carbide ◽  
Composite Materials ◽  
Hybrid Composite ◽  
Hybrid Composites ◽  
Fiber Reinforced ◽  
Shear Properties ◽  
Content Type ◽  
Volume Fractions ◽  
Transverse Tensile

PurposeThe purpose of this paper is to study the effect of the addition of silicon carbide (SiC) microparticles and their contributions regarding the tensile and shear properties of the T800 fiber reinforced polymer composite at various fiber volume fractions. The tensile and shear properties of the hybrid composites where continuous T800 fibers are used as reinforcements in an epoxy matrix embedded with SiC microparticles have been studied.Design/methodology/approachThe results were obtained by implementing a micromechanics approach assuming a uniform distribution of reinforcements and considering one unit cell from the whole array. Using the two-step homogenization process, the properties of the materials were determined by using the finite element analysis (FEA). The predicted elastic properties from FEA were compared with the analytical results. The analytical models were implemented in the MATLAB Software. The FEA was performed in ANSYS APDL.FindingsThe mechanical properties of the hybrid composite had increased when compared with the properties of the conventional FRP. The results suggest that SiC particles are a good reinforcement for enhancing the transverse and shear properties of the considered fiber reinforced epoxy composite. The microparticle embedment has significant effect on the transverse tensile properties as well as in-plane and out-of-plane shear properties.Research limitations/implicationsThis is significant because improving the properties of the composite materials using different methods is of high interest in the materials community. Using this study people can work on the process of including different type of microparticles in to their composite designs and improve their performance characteristics. The major influence of the particles can be seen only at lower volume fractions of the fiber in the composite. Only FEA and analytical methods were used for the study.Practical implicationsMaterial property improvements lead to more advanced designs for aerospace and defense structures, which allow for high performance under unpredictable conditions.Originality/valueThis type of study proves that the embedment of different microparticles is a method that can be used for improving the properties of the composite materials. The improvement of the transverse and shear properties will be useful especially in the design of shell structures in the different engineering applications.

scholarly journals Thermal analysis of Kevlar/basalt reinforced hybrid polymer composite

2021 ◽  
Author(s):  
V Ramesh ◽  
P Anand
Keyword(s):  
Thermal Expansion ◽  
Thermal Properties ◽  
Composite Materials ◽  
Hybrid Composite ◽  
Hybrid Composites ◽  
Thermo Gravimetric Analysis ◽  
Linear Thermal Expansion ◽  
Thermal Conductance ◽  
Mechanical And Thermal Properties ◽  
Gravimetric Analysis

Abstract Use of lightweight composite materials in automobile applications such as doors, bonnets, and bumpers and also the utilization of composite materials in building insulations require superior mechanical and thermal properties. This study attempts to determine the thermal conductivity, linear thermal expansion coefficient, heat deflection temperature and thermo gravimetric analysis of hybrid composite containing reinforcement fibers stacked in seven different combinations in an epoxy matrix as per ASTM standards. Each composite contained two different fibre materials, i.e., Kevlar and basalt. The study revealed that the stacked layers of basalt fibers had more influence on the thermal properties. It was observed that the hybrid composite made of least quantity layers of Kevlar and most of basalt exhibited the maximum thermal conductance of 0.219W/mK, while with vice versa laminate developed 0.191W/mK which was least thermal conductance. The composition prepared by made Kevlar as core layer and basalt as its outer layers exhibited coefficient of linear thermal expansion above 11.5x10-6/oC. Maximum decomposition weight loss of 76.92% occurred in the composition prepared by keeping basalt as core and Kevlar as outer layer. The differential thermal graph showed that the said hybrid composite exhibited the peak decomposition rate of 1wt.%/oC. The thermal properties of the laminate prepared by keeping two layers of Kevlar sandwiched between the basalt were excellent when compared to other six hybrid composites investigated in this study.

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