Wear Properties of Hybrid Epoxy Composites Reinforced with Carbon/Kevlar/Glass Fabrics

Kartal, İlyas; Demirer, Halil

doi:10.12693/aphyspola.131.559

Cited by 14 publications

(6 citation statements)

References 11 publications

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“…Lastly, pure [PPP]s yielded the lowest impact strength of 6.4 kJ/m 2 . From the previous study conducted by Kartal and Demirer, the presence of only Kevlar fibre has resulted in the highest strength, as expected [40]. Whereas, for hybrid PALF/Kevlar, by increasing the fibre loading for Kevlar increased the impact strength of up to 91% than pure PALF fibre composite.…”

Section: Impact Propertiessupporting

confidence: 76%

Mechanical Properties of PALF/Kevlar-Reinforced Unsaturated Polyester Hybrid Composite Laminates

et al. 2022

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Natural and synthetic fibres are in high demand due to their superior properties. Natural fibres are less expensive and lighter as compared to synthetic fibres. Synthetic fibres have drawn much attention, especially for their outstanding properties, such as durability, and stability. The hybridisation between natural and synthetic fibres composite are considered as an alternative to improve the current properties of natural and synthetic fibres. Therefore, this study aimed to determine the physical and mechanical properties of pineapple leaf fibre (PALF) and Kevlar reinforced unsaturated polyester (UP) hybrid composites. The PALF/Kevlar hybrid composites were fabricated by using hand layup method utilising unsaturated polyester as the matrix. These composites were laid up to various laminated configurations, such as [PKP]s, [PPK]s, [KPP]s, [KKP]s, [PPP]s and [KKK]s, whereby PALF denoted as P and Kevlar denoted as K. Next, they were cut into size and dimensions according to standards. Initially, the density of PALF/Kevlar reinforced unsaturated polyester were evaluated. The highest density result was obtained from [KKK]s, however, the density of hybrid composites was closely indistinguishable. Next, moisture absorption behaviour and its effects on the PALF/Kevlar reinforced unsaturated polyester were investigated. The water absorption studies showed that the hybridisation between all PALF and Kevlar specimens absorbed moisture drastically at the beginning of the moisture absorption test and the percentage of moisture uptake increased with the volume fraction of PALF in the samples. The tensile test indicated that all specimens exhibited nonlinear stress-strain behaviour and shown a pseudo-ductility behaviour. [KKP]s and [KPK]s hybrid composites showed the highest tensile strength and modulus. The flexural test showed that [KPK]s had the highest flexural strength of 164.0 MPa and [KKP]s had the highest flexural modulus of 12.6 GPa. In terms of the impact strength and resistance, [KKP]s outperformed the composite laminates. According to SEM scans, the hybrid composites demonstrated a stronger interfacial adhesion between the fibres and matrix than pure PALF composite.

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Section: Impact Propertiessupporting

confidence: 76%

Mechanical Properties of PALF/Kevlar-Reinforced Unsaturated Polyester Hybrid Composite Laminates

et al. 2022

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“…However, the Kevlar fibers remained unbroken, and the Kevlar/ Epoxy composite wear surface was smoother and uniform after the wear (Figure 8D), unlike the glass/ epoxy composite surface, where the fibers were more broken. [54,55] UHMWPE fibers had a behavior similar to that of Kevlar fibers and did not break during the wear. Figure 8E demonstrates that the composite surface was smooth.…”

Section: Comparison Of the Sem Images Of The With Different Reinforcements Winding Angles And Winding Typesmentioning

confidence: 97%

The effect of composite structural parameters on tribo‐mechanical characteristics and thermal conductivity of self‐lubricant composites

2021

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This article aims to look into the impact of structural parameters on the tribological, mechanical, and thermal functions of composites. These parameters include the reinforcement type, the winding angle and winding type. The tribological characteristics of polytetrafluoroethylene (PTFE)/epoxy filament wound composites with various reinforcements including E-glass, Kevlar, and ultra-high-molecular weight polyethylene were examined under two different loads and the sliding velocity of 0.12 m/s. After the wear test, the worn surfaces were observed by scanning electron microscopy. The compressive strength of the composites was considered under static loading conditions to investigate the mechanical properties. Also, the thermal conductivity of the composites was investigated. Interfacial shear strength (IFSS) was measured by applying a single fiber microdroplet pullout test. The tribological and mechanical performance of the composites containing Kevlar reinforcement fibers was found to be better than that of PE and glass. The winding angle of 55 showed a better performance, and the hybrid winding type was more suitable than the layered one. So in general, it could be concluded that the hybrid-Kevlar/PTFE-55 composite exhibited the best tribological and mechanical performance among all composites. The thermal conductivity of hybrid-Kevlar/PTFE-55 composites was not high; therefore, it was increased by tungsten carbide (WC). According to the microdroplet test results, IFSS was the highest between Kevlar fibers and the matrix; it was raised by employing WC. The reported results may facilitate the development of self-lubricant composites embedded in WC fillers applicable in bearings.

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“…Therefore, the hybridization of two adjacent fibers, such as carbon fiber and Kevlar fiber, can enhance its impact toughness, strain capacity, compression strength and weight reduction. 29–31 Although hybridization has a positive effect on the mechanical properties and impact toughness of aramid/carbon composites, 32–34 further development and improvement of properties are still needed to withstand a variety of design conditions.…”

Section: Introductionmentioning

confidence: 99%

Effect of graphene nano-platelets on mechanical and impact characteristics of carbon/Kevlar reinforced epoxy hybrid nanocomposites

Alsaadi

Younus

Erkliğ

et al. 2021

Proceedings of the Institution of Mechanical Engineers, Part C:

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The influence of various graphene nano-platelets (GNPs) content on the tensile, flexural and Charpy impact characteristics of carbon, Kevlar and hybrid carbon/Kevlar fibers reinforced epoxy matrix composites was investigated. Both of composite configurations as carbon and Kevlar at outer and core skins were experimentally tested. The SEM images for flexural specimens were taken to observe the adhesion mechanism of GnPs particles with fiber/epoxy system. It is found that hybridization with Kevlar layers is contributed a positive effect on the hybrid carbon/Kevlar laminate structures in terms of tensile, flexural and impact behaviour. The incorporation of GnPs particles in hybrid and non-hybrid composite samples results in significant improvements in tensile, flexural and impact properties, and the greatest improvement occurs within the GnPs particle content of 0.1 and 0.25 wt%, indicating that the interfacial bonding between the matrix and the fibers is better due to the large surface area of the GnPs and the good entanglement between the GnPs layers and the matrix chains. The samples of impact test are experimented for edgewise and flatwise directions.

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Wear Properties of Hybrid Epoxy Composites Reinforced with Carbon/Kevlar/Glass Fabrics

Cited by 14 publications

References 11 publications

Mechanical Properties of PALF/Kevlar-Reinforced Unsaturated Polyester Hybrid Composite Laminates

Mechanical Properties of PALF/Kevlar-Reinforced Unsaturated Polyester Hybrid Composite Laminates

The effect of composite structural parameters on tribo‐mechanical characteristics and thermal conductivity of self‐lubricant composites

Effect of graphene nano-platelets on mechanical and impact characteristics of carbon/Kevlar reinforced epoxy hybrid nanocomposites

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