scholarly journals Fabrication, Characterization and Drilling Operation of Natural Fiber Reinforced Hybrid Composite With Filler (Fly-Ash/Graphene)

The aim of the work is to investigate mechanical properties and machining (drilling) behaviour glass-sisal-epoxy hybrid composite (GSEHC) with filler as fly-ash and graphene. Hybrid composites are fabricated by hand lay-up technique using Eglass and sisal as reinforcement fiber and epoxy as binder. Mechanical and physical properties like tensile, bending, impact strength, hardness, density and water absorption percentage are examined. The interfacial properties, internal cracks and internal structure of fractured are observed using Scanning Electron Microscope (SEM). Further drilling operation on the fabricated Hybrid composite was carried by varying the spindle speed as 600 rpm, 900 rpm, 1200 rpm to observe suitable drilling speed to carry the circularity test and delamination factors.

2021 ◽  
Vol 37 (3) ◽  
pp. 531-540
Author(s):  
P.S. Yadav ◽  
Rajesh Purohit ◽  
Anil Kothari ◽  
R. S. Rajput

The aim of the current investigation is an analysis of the mechanical and thermal properties of epoxy/ nano-silica/ Kevlar fiber hybrid composites. The ultrasonic vibration-assisted hand layup process was used for the preparation of composite with different weight percentages (1%, 2%, 3%, and 4%) of Nano SiO2 particles and 2 layers of the Kevlar fiber. For the evolution of mechanical properties tensile tests, hardness tests, impact tests, and flexural tests were done. For evaluation of morphological analysis Field Emission-Scanning Electron Microscopy, X-RD, and FT-IR tests were performed. A heat deflection temperature test was performed for the evaluation of the thermal characteristic of the hybrid composite. The results show the improvement of mechanical and thermal properties of the hybrid composite with increasing wt.% of nano SiO2 particles in the hybrid composites. As per the observation of experimental results, the Field Emission-Scanning Electron Microscopy,Fourier Transform Infrared Spectroscopy, and X-ray diffraction test also show the enhancement of surface morphology and chemical structure of hybrid composites. The heat diffraction test shows the improvement of thermal resistance and heat absorption capability.As per the observation of experimental results, the tensile strength, hardness, and impact strength increased up to 98%, 16%, and 42% respectively. The flexural test shows the improvement of flexural modulus and stresses 46% and 35% respectively. The heat deflection temperature of hybrid composite improves up to 30%.


2016 ◽  
Vol 2016 ◽  
pp. 1-8 ◽  
Author(s):  
B. R. Senthil Kumar ◽  
M. Thiagarajan ◽  
K. Chandrasekaran

This work has investigated to find the influence of silicate on the wear behavior of LM 24/4 wt.% fly ash hybrid composite. The investigation reveals the effectiveness of incorporation of silicate in the composite for gaining wear reduction. Silicate particles with fly ash materials were incorporated into aluminum alloy matrix to accomplish reduction in wear resistance and improve the mechanical properties. The LM24/silicate/fly ash hybrid composite was prepared with 4 wt.% fly ash particles with 4, 8, 12, 16, 20, and 24 wt.% of silicate using vortex technique. Tribological properties were evaluated under different load (15, 30, 45, 60, and 75 N); sliding velocity (0.75, 1.5, 2.25, and 3 m/sec) condition using pin on disc apparatus and mechanical properties like density, hardness, impact strength, and tensile strength of composites were investigated. In addition, the machining of the aluminum hybrid composite was studied using Taguchi L9orthogonal array with analysis of variance. The properties of the hybrid composites containing 24 wt.% silicates exhibit the superior wear resistance and mechanical properties.


2017 ◽  
Vol 47 (8) ◽  
pp. 2050-2073 ◽  
Author(s):  
A Praveen Kumar ◽  
M Nalla Mohamed

Economic and environmental concerns lead the researchers toward development of sustainable and renewable materials of which reinforced composites are part of. The abundantly available natural fibers have attracted the researchers to study their performance as reinforcements and feasibility for making automobile components. The performance of composite materials is mainly assessed through their mechanical properties. However, natural fibers to date were mainly used as reinforcements to create bulk composite components with reduced cost rather than improved mechanical performances. Among the methods available for improving mechanical properties of the natural fiber composites, combined mercerization treatment, hybridization, and incorporation of fly ash fillers in the matrix are the best solutions. Therefore, the objective of this research is to evaluate the tensile properties of hybrid kenaf/glass composites with and without fly ash particulate filler as per ASTM standards. Moisture absorption behavior and its effect on the tensile properties of hybrid composites are also investigated. The results revealed that the addition of 10wt % fly ash particles with natural fiber composites increased the tensile strength of composites while hybridization with glass fibers reduced the water absorption properties.


2020 ◽  
Vol 304 ◽  
pp. 3-8
Author(s):  
Onthida Kosasang ◽  
Autsadawooth Kummoo ◽  
Ratchapol Konghakot ◽  
Sukangkana Talangkun

Phase formation, impact resistance, and fracture surface were investigated in unreinforced Al6061, Al6061-5wt% fly ash and Al6061 hybrid composites containing 5wt% fly ash and 1,3 wt% CaO. The Al6061 composites were fabricated the stir casting process. The XRD patterns reveal the formation of second phases (MgAl2O4, CaAl4O7 and MgSiO3), which were found in the Al6061 hybrid composites. The average grain size of Al6061 hybrid composite are much smaller than that of unreinforced Al6061.The impact resistance was enhanced by approximately 67% in Al6061 hybrid composite as compared to unreinforced Al6061 alloy. Brittle fracture indicting brittle fracture was observed in unreinforced Al6061 alloy while evidence of a mixture of brittle and ductile fracture was found in the Al6061 hybrid composites.


2016 ◽  
Vol 51 (2) ◽  
pp. 81-88
Author(s):  
MR Hassan ◽  
MA Gafur ◽  
AA Rana ◽  
MR Qadir ◽  
SM Masum ◽  
...  

In this research work an attempt is made to fabricate a hybrid composite material with hessian cloth (natural fiber) and glass fiber (synthet ic fiber) in polyester matrix using hand lay-up process and testing was performed by ASTM standards. Main objective of this research work is to investigate the effects of use of natural fiber in the composite material with the synthetic fiber. Experimental results revealed that hybridization of composite with natural and synthetic fibers shows promising tensile strength, flexural strength and hardness. Among the hybrid composites one with the composition of three layers of glass fibers and two layers of hessian cloth (jute fiber) showed highest ten sile strength and flexural strength which were found 104.63 MPa and 134.65 MPa respectively. Water absorption was high in composites having higher hessian cloth content than glass fiber. Composite with high glass fiber content showed high hardness which was 39.9 HV.Bangladesh J. Sci. Ind. Res. 51(2), 81-88, 2016


2021 ◽  
Vol 56 (3) ◽  
pp. 96-110
Author(s):  
Aidy Ali ◽  
Kannan Rassiah ◽  
M.M.H. Megat Ahmad

Natural fiber-reinforced composites are essential for the growth of polymer composite technology. The key goal of this study is to utilize the natural bamboo Gigantochloa scortechinii, which is obtained in Melaka, Malaysia. In this study, the mechanical properties of woven bamboo, epoxy polymer, and E-glass hybrid composite were characterized. Woven bamboo laminates were woven from bamboo strips, and the hybrid composites were obtained by manually stacking alternating 2-6 laminates of woven bamboo, E-glass, and epoxy. The findings show that increasing the woven bamboo layers from 2 to 6 did not improve the tensile strength, modulus, impact, and flexural strength. However, the hardness strength was increased. Overall, the minimum or maximum number of laminated bamboo fiber/E-glass/epoxy hybrid composite layers can be used in various product applications.


2015 ◽  
Vol 766-767 ◽  
pp. 85-89 ◽  
Author(s):  
V.M. Manickavasagam ◽  
B. Vijaya Ramnath ◽  
C. Elanchezhian ◽  
R. Sundarrajan ◽  
S. Vickneshwaran ◽  
...  

Advancement in Science and technology over the past decade has made the human society to venture into using hybrid materials for variety of applications. Natural fiber composite materials are one among those new emerging engineering materials. These materials are finding increased usage due to their low cost and eco-friendly nature. This paper deals with the fabrication and characterization of abaca, flax based hybrid composite. The properties of hybrid composites are compared to the composite containing any one of the constitutional fibers of hybrid composite. The characterisation is based on behaviour of composite under various mechanical testing. The tests include double shear strength and Hardness. The inner filament brakeage and crack propagation are studied using Scanning Electron Microscope (SEM).


Polymers ◽  
2021 ◽  
Vol 13 (8) ◽  
pp. 1323
Author(s):  
M. J. Suriani ◽  
Hannah Zalifah Rapi ◽  
R. A. Ilyas ◽  
Michal Petrů ◽  
S. M. Sapuan

In recent years, most boat fabrication companies use 100% synthetic fiber-reinforced composite materials, due to their high performance of mechanical properties. In the new trend of research on the fabrication of boat structure using natural fiber hybrid with kevlar/fiberglass-reinforced composite, the result of tensile, bending, and impact strength showed that glass fiber-reinforced polyester composite gave high strength with increasing glass fiber contents. At some point, realizing the cost of synthetic fiber is getting higher, researchers today have started to use natural fibers that are seen as a more cost-effective option. Natural fibers, however, have some disadvantages, such as high moisture absorption, due to repelling nature; low wettability; low thermal stability; and quality variation, which lead to the degradation of composite properties. In recent times, hybridization is recommended by most researchers as a solution to natural fiber’s weaknesses and to reduce the use of synthetic fibers that are not environmentally friendly. In addition, hybrid composite has its own special advantages, i.e., balanced strength and stiffness, reduced weight and cost, improved fatigue resistance and fracture toughness, and improved impact resistance. The synthetic–nature fiber hybrid composites are used in a variety of applications as a modern material that has attracted most manufacturing industries’ attention to shift to using the hybrid composite. Some of the previous studies stated that delamination and manufacturing had influenced the performance of the hybrid composites. In order to expand the use of natural fiber as a successful reinforcement in hybrid composite, the factor that affects the manufacturing defects needs to be investigated. In this review paper, a compilation of the reviews on the delamination and a few common manufacturing defect types illustrating the overview of the impact on the mechanical properties encountered by most of the composite manufacturing industries are presented.


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