Improvement of Hardness and Wear Resistance of Glass Fiber-Reinforced Epoxy Composites by the Incorporation of Silica/Carbon Hybrid Nanofillers

Megahed, A. A.; Agwa, M. A.; Megahed, M.

doi:10.1080/03602559.2017.1320724

Cited by 60 publications

(34 citation statements)

References 28 publications

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“…48 The increased weight loss at the highest normal load (10 N) may be attributed to fiber pullout, matrix cracking, and fiber–matrix debonding occurred as a result of wear test. This result agrees with that obtained by Megahed et al 33…”

Section: Resultssupporting

confidence: 94%

“…48 The increased weight loss at the highest normal load (10 N) may be attributed to fiber pullout, matrix cracking, and fibermatrix debonding occurred as a result of wear test. This result agrees with that obtained by Megahed et al 33 PFRP composite specimens show the highest wear resistance compared to the other types containing glass fiber. This is mainly attributed to the high wear resistance of polyamide fiber.…”

Section: Results and Discussion Density And Void Contentsupporting

confidence: 93%

“…The specimen was held stationary, and the disc was rotated while a normal load was applied through a lever mechanism. A series of tests were conducted with a constant sliding velocity of 0.93 m/s under four different normal loads of 2.5, 5, 7.5, and 10 N. 21,32,33 Thus, the applied pressure was varied from 0.07 MPa to 0.27 MPa. The sliding distance was varied by varying the running time.…”

Section: Testing and Measurementsmentioning

confidence: 99%

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Wear behavior of glass–polyamide reinforced epoxy hybrid composites

Selmy

El‐baky

Hegazy

2018

Journal of Thermoplastic Composite Materials

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The abrasive wear performance of glass–polyamide fibers/epoxy composites was experimentally studied using a pin-on-disc wear tester at different applied normal loads. Specimens were fabricated in inter-ply configuration using the hand layup technique. Specimens were subjected to distilled water and sea water immersion at room temperature for 200 days. The effects of the reinforcement hybridization, stacking sequence, and relative fiber amounts on the wear behavior of dry and wet specimens were discussed. Temperature rise at the specimen pin–disc interface has been measured. The morphologies of the worn surfaces were investigated with scanning electron microscopy (SEM). Results showed that distilled water and sea water uptake of glass/epoxy composite is 2.5 and 2 times those of polyamide/epoxy counterparts. Correction factor decreases the diffusion coefficient by about 24% and 26% for, respectively, polyamide/epoxy and glass/epoxy composites. Hybridizing glass fiber composite with polyamide fiber could reduce the specimen’s weight loss during wear test for dry and wet specimens. Water uptake induces a significant decrease in wear resistance of the studied composites. Stacking sequence has a slight effect on wear resistance, while relative fiber amounts have a noticeable effect. The maximum temperature at the specimen pin–disc interface (21.5°C) was noticed for glass/epoxy composite under applied load of 10 N. As the applied load and the sliding time increase, the wear resistance of the composites decreases but the temperature at the specimen pin–disc interface increases. SEM observations show debonding, cracks, fiber fracture, and debris formation.

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Section: Resultssupporting

confidence: 94%

Section: Results and Discussion Density And Void Contentsupporting

confidence: 93%

Section: Testing and Measurementsmentioning

confidence: 99%

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Wear behavior of glass–polyamide reinforced epoxy hybrid composites

Selmy

El‐baky

Hegazy

2018

Journal of Thermoplastic Composite Materials

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“…Figure 8 shows the damage generated by the dry erosion tests at a temperature of 50°C and the three impact angles used (75°, 85°and 90°). It can be observed that the surfaces of the glass fiber samples show severe scratches and a very defined circular wear pattern, due to their relatively low hardness and in spite of their good thermal properties [27,28]. On the other hand, the hardness and thermal properties of carbon fiber samples avoid major damage at the end of the test [29], based on this, it is observed that the wear pattern was not formed in its entirety.…”

Section: Roughness and Hardness Of Samplesmentioning

confidence: 99%

Experimental study of temperature erosion tests on bidirectional coated and uncoated composites materials

Mendoza

Cárdenas

Pérez

et al. 2020

Mater. Res. Express

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In this research work, temperature erosion wear tests, on composites materials (carbon fiber and glass fiber), were carried out. The tests were made on uncoated and coated materials using a polyester resin (Gelcoat), which is used to protect the leading edge of wind turbine blades against the weather and UV rays and is of interest, in this study, to know the behaviour of this coating subjected to hard particles erosion. The tests were performed at 50°C, in order to simulate de extreme temperature in the coast of Oaxaca, Mexico, where some wind turbines are installed using blades made of fiberglass coated with gelcoat. Erosion tests were performed in a platform that was developed from the ASTM G76 standard. The rectangular samples had 25×18 mm and thickness of 4 mm. Sea sand from coast of Oaxaca was utilized as erosive particle. Three different impact angles were used 75°, 85°and 90°. The particle velocity was adjusted at 12 m s −1 . To determine the mass loss, the samples were weighed before the test and reweighed every 2 min to measure the amount of mass loss until complete the 6 min of the test. In order to identify the wear mechanisms, Scanning Electron Microscopy was used. The average roughness (Ra) and profiles of the samples tested were determined with a 3D optical profilometer. The results showed that Carbon fiber composite material had 3 times more resistance to erosive wear than fiberglass.

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“…The effect of addition of silica and carbon black at nano scale on hardness and antiwear performance of the woven E-glass fabric reinforced epoxy composites has been studied. The conclusions drawn from the study, under all applied load conditions improved the wear resistance property significantly with the addition of nano-silica and nano-carbon black reinforcements [6]. Furthermore, Rashmi et al carried out a study towards mechanical and tribological characteristics of polymer nanocomposites in which epoxy is used as a matrix phase and Organo-modified montmorillonite (OMMT) nano clay is used as a filler with different proportions.…”

Section: Introductionmentioning

confidence: 99%

Antiwear Performance Evaluation o f Halloysite Nanotube ( HNT ) Filled Polymer Nanocomposites

G*¹,

Rathnakar²,

Santhosh³

et al. 2019

IJEAT

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Polymer nanocomposites containing various types of reinforcements and fillers are oftenly used in applications such as sliding elements in the machine and automotive parts, gear assemblies etc., in which tribological performance parameters viz. friction and wear are the major issues. In this work, the specific wear rate of HNT filler loading (0-4wt %) in Glass-Epoxy nanocomposites fabricated by vacuum bagging technique are evaluated experimentally. For this purpose, the specimens are prepared and tests are conducted as per the ASTM G-99 standard for a number of trials with the assistance of a pin-on-disc machine by varying load and speed values, keeping time and track diameter constant. The results obtained from experiments reveals that reduction in specific wear rate and the amount of material loss is quite significant for HNT loaded specimens when compared with neat sample even at higher operating conditions. This indicates that HNT comprises of hard ceramic elements viz. SiO2 and Al2O3 which eventually enhances the antiwear behaviour of prepared nanocomposites. Finally, a study on wear mechanisms and morphologies are carried out by analyzing the worn surfaces through SEM micrographs.

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Improvement of Hardness and Wear Resistance of Glass Fiber-Reinforced Epoxy Composites by the Incorporation of Silica/Carbon Hybrid Nanofillers

Cited by 60 publications

References 28 publications

Wear behavior of glass–polyamide reinforced epoxy hybrid composites

Wear behavior of glass–polyamide reinforced epoxy hybrid composites

Experimental study of temperature erosion tests on bidirectional coated and uncoated composites materials

Antiwear Performance Evaluation o f Halloysite Nanotube ( HNT ) Filled Polymer Nanocomposites

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