Interlaminar Fracture toughness in Glass-Cellulose Reinforced Epoxy hybrid composites

Uppin, Vinayak S; Ashok,; AnanthJoshi,; Sridhar, I; Gouda, P.S. Shivakumar

doi:10.1088/1757-899x/149/1/012113

Cited by 7 publications

(4 citation statements)

References 5 publications

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“…The same process was repeated to obtain the L-bend with Kenaf and GO fillers. As per the Table 1, the amount (wt%) of fillers dispersed using draw down coating [8][9][10] over the curved region of each ply of L bend before they were placed into mould. L-bend composite laminate which is made up of 18 plies of glass fibre and its graphical representation of Kenaf dispersion on Glass fibres are shown in Fig.…”

Section: Construction Of L-bend Specimensmentioning

confidence: 99%

Influence of Kenaf and GO on interlaminar radial stresses in glass/epoxy L-bend laminates

et al. 2018

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Laminates of L-bends are inherently weak in the through thickness direction at the region of curvature. To address this behavior, experimental investigations have been made to find the influence of graphene oxide (GO) and Kenaf short fibres on interlaminar radial stress of a unidirectional glass epoxy L-bend composite laminate. Kenaf in the range of 5-10 wt% and GO in the range of 1-2 wt% were loaded at each ply at the curvature of a L-bend and their influence on curved beam strength (CBS) was investigated experimentally as per ASTM D6415. L-bend composite specimens with and without fillers were fabricated with the aid of hand lamination technique. Four point bending fixtures were designed and fabricated to hold the specimen firmly in the uniaxial tension machine. Tests were carried out as per ASTM D6415 and load displacement plots were carefully recorded. Experimental data revealed that the laminate loaded with Kenaf fibres at the curvature radius of L-bend had greater influence on CBS and interlaminar stresses than GO. Further, the delaminated surfaces of L-bend at the curvature region was carefully examined using scanning electron microscope to know the interfacial adhesion mechanism of Kenaf and GO with epoxy and glass fibre.

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Section: Construction Of L-bend Specimensmentioning

confidence: 99%

Influence of Kenaf and GO on interlaminar radial stresses in glass/epoxy L-bend laminates

et al. 2018

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“…Additionally, interlaminar shear strength and interlaminar fracture toughness of twisted Flax fibers with Glass fiber reinforced hybrid composites were higher than those of Glass Fiber composites [7]. In addition to this optimum Cellulose coating on Glass fiber with surface density of 320 g/m 2 has contributed a good compromise to get improved fracture toughness for mode I and for mode II loadings [8]. Improvement in curved beam strength (CBS) and interlaminar radial stress of a UD Glass T epoxy L-bend composite laminate by incorporating Kenaf in the range of 5-10 wt% and GO in the range of 1-2 wt% were loaded at each ply at the curvature of a L-bend [9].…”

Section: Introductionmentioning

confidence: 91%

Crack suppression by natural fiber integration for improved interlaminar fracture toughness in fiber hybrid composites

Gouda

Joshi

Sridhar

et al. 2022

Frattura Ed Integrità Strutturale

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In this paper, the effect of integration of natural fibers in UD carbon fiber is studied. The integration of natural fibers in carbon fiber is made via intra fiber hybridization. Natural fiber hybrid composite samples were prepared for Mode I and Mode II fracture tests. XRD analysis was done for the chosen natural fibres to know the crystallinity index and then compared with Carbon and Glass fibres. The fracture test experimental results, revealed that the effect of Jute fiber integration in UD Carbon epoxy composite was found significant in getting relatively good Mode I and II fracture toughness at the crack initiation without losing its stiffness. In addition to this Kenaf Carbon epoxy composite indicated better crack suppression with 30% higher propagation toughness values as compared other hybrid combinations and pristine composites. It is observed that integration of jute fibers in UD carbon epoxy composites was significant in achieving good mode I and mode II fracture toughness at the crack initiation without losing its stiffness and also kenaf carbon epoxy composites indicated better crack suppression with 30% higher propagation toughness as compared to other hybrid combinations used.

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“…The most common method for enhancing interlaminar fracture toughness is to modify the resin system using different fillers like graphene, CNT, MWCNT, ETBN, Al 2 O 3 , SiC, Graphene Nanoplatelets (GnPs), and Carbon Blacks (CBs), etc. [1][2][3][4][5][6][7][8][9][10][11][12][13][14]. The mode I fracture toughness of CNT-incorporated carbon epoxy prepreg with a loading range of CNT from 0 g/m 2 to 4 g/m 2 by an increment of 0.5 g/m 2 is examined.…”

Section: Introductionmentioning

confidence: 99%

“…Otherwise, agglomeration of particles leads to the development of the micro-cracks in the resin phase which is the cause of reduced fracture toughness in the interface region of the composites. Fiber bridging [6][7] is the key aspect in slowing down the rate of random propagation of cracks. The effect of milled Glass fiber (2.5, 5, 7.5, and 10% by weight of epoxy matrix) in Glass Epoxy composite under mode I and mode II were studied and found that good fiber/matrix interface, fiber bridging leads to improvement in the mode I and mode II fracture toughness significantly by 102% and 175%, respectively for 5 wt.% addition of milled glass fibers [8].…”

Section: Introductionmentioning

confidence: 99%

Matrix Hybridization Effects on Interlaminar Fracture Toughness of Glass Epoxy Laminates using Nano and Micro fillers

Joshi,

Gouda,

Sridhar

et al. 2023

Frattura Ed Integrità Strutturale

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The composite materials are normally made of reinforcements and resins. High-performance composites are generally termed hybrid composite materials. Generally, fiber-reinforced composite laminates are very weak in their out-of-plane properties, to address this issue unidirectional (UD) Glass laminates are prepared by modifying epoxy matrix using plasma-treated multi-walled carbon nanotubes (MWCNTs) and compared with low-cost micro fillers like Aluminum oxide (Al2O3) and Sodium Carbonate (Na2CO3) in the epoxy matrix. All these Nano and Micro fillers were loaded in the range of 0.5wt% to 2wt% in epoxy. The addition of these fillers in the epoxy matrix was found to be effective in increasing the out-of-plane load-bearing capacity of the composites as compared to plain Glass epoxy laminates. Also, the fracture toughness enhanced in the range of 20-26% and 14-17.5% under mode I and mode II loading respectively. Scanning electron microscopic analysis was done for delaminated glass laminates and found that the delamination of fibers is the significant failure mechanism during crack initiation from the crack tip.

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Interlaminar Fracture toughness in Glass-Cellulose Reinforced Epoxy hybrid composites

Cited by 7 publications

References 5 publications

Influence of Kenaf and GO on interlaminar radial stresses in glass/epoxy L-bend laminates

Influence of Kenaf and GO on interlaminar radial stresses in glass/epoxy L-bend laminates

Crack suppression by natural fiber integration for improved interlaminar fracture toughness in fiber hybrid composites

Matrix Hybridization Effects on Interlaminar Fracture Toughness of Glass Epoxy Laminates using Nano and Micro fillers

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