Interlaminar toughness of interleaved CFRP using non-woven veils: Part 1. Mode-I testing

Kuwata, Manabu; Hogg, P.J.

doi:10.1016/j.compositesa.2011.07.016

Cited by 101 publications

(90 citation statements)

References 29 publications

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“…However, this approach may seriously affect modulus and thermal properties of the material for only a modest increase in the toughness. Other techniques include interleaving [7] or toughening with the thermoplastic fibers [8] and carbon nanotubes [9]. The other most effective method is by coating the carbon fibers with a ductile polymeric material before they are incorporated into a matrix.…”

Section: Introductionmentioning

confidence: 99%

Interfacial toughening and consequent improvement in fracture toughness of carbon fiber reinforced epoxy resin composites: induced by diblock copolymers

Deng¹,

Zhou²,

Zhu³

et al. 2013

Express Polym. Lett.

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Abstract. Carbon fibers chemically grafted with hydroxyl-terminated diblock copolymer poly (n-butylacrylate)-b-poly (glycidyl methacrylate) (OH-PnBA-b-PGMA), were used as the reinforcement for epoxy composites. The multi-filament composite specimens were prepared and measured by dynamic mechanical analysis (DMA), to study the interfacial toughness of carbon fiber reinforced epoxy composites with the diblock copolymers. The loss modulus and loss factor peaks of !-relaxation indicated that composites with diblock copolymers could dissipate more energy at small strain and possess better interfacial toughness, whereas composites without the ductile block PnBA having the worse interfacial toughness. The glass transition temperature and the apparent activation energy calculated from the glass transition showed that the strong interfacial adhesion existed in the composites with diblock copolymers, corresponding with the value of interfacial shear strength. Therefore, a strengthening and toughening interfacial structure in carbon fiber/epoxy composites was achieved by introducing the diblock copolymer OH-PnBA-b-PGMA. The resulting impact toughness, characterized with an Izod impact tester, was better than that of composite without the ductile block PnBA.

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Section: Introductionmentioning

confidence: 99%

Interfacial toughening and consequent improvement in fracture toughness of carbon fiber reinforced epoxy resin composites: induced by diblock copolymers

Deng¹,

Zhou²,

Zhu³

et al. 2013

Express Polym. Lett.

View full text Add to dashboard Cite

show abstract

“…Toughening of carbon fiber/epoxy composites has attracted a long-standing attention [1][2][3][4]. One of the most effective methods is by coating the carbon fibers with a ductile polymeric material to modify the mode of failure and thus the potential energy absorbing capacity of their composites [5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Formation of interfacial network structure via photo-crosslinking in carbon fiber/epoxy composites

Deng¹,

Zhao²,

Lin³

et al. 2014

Express Polym. Lett.

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Abstract.A series of diblock copolymers (poly(n-butylacrylate)-co-poly(2-hydroxyethyl acrylate))-b-poly(glycidyl methacrylate) ((PnBA-co-PHEA)-b-PGMA), containing a random copolymer block PnBA-co-PHEA, were successfully synthesized by atom transfer radical polymerization (ATRP). After being chemically grafted onto carbon fibers, the photosensitive methacrylic groups were introduced into the random copolymer, giving a series of copolymers (poly(n-butylacrylate)-co-poly(2-methacryloyloxyethyl acrylate))-b-poly(glycidyl methacrylate)((PnBA-co-PMEA)-b-PGMA). Dynamic mechanical analysis indicated that the random copolymer block after ultraviolet (UV) irradiation was a lightly crosslinked polymer and acted as an elastomer, forming a photo-crosslinked network structure at the interface of carbon fiber/epoxy composites. Microbond test showed that such an interfacial network structure greatly improved the cohesive strength and effectively controlled the deformation ability of the flexible interlayer. Furthermore, three kinds of interfacial network structures, i) physical crosslinking by H-bonds, ii) chemical crosslinking by photopolymerization, and iii) interpenetrating crosslinked network by photopolymerization and epoxy curing reaction were received in carbon fiber/epoxy composite, depending on the various preparation processes.

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“…Recently, a new method to improve the interfacial toughness and strength of sandwich structures was proposed by applying short aramid-fiber mat between aluminum foam and carbon-fiber cloth [4,5]. Improvement in both Mode-I and II interfacial toughness and strength under quasi-static and impacting load were observed [6][7][8][9] due to the bridging effects ________________________ Shun Wang, Xiaofei Zhang*, School of Architecture and Engineering, Shenyang University, No. 21 Wanghuanan St., Shenyang Liaoning 110000, P.R.…”

Section: Introductionmentioning

confidence: 99%

Carbon-fiber Reinforced Concrete with Short Aramid-fiber Interfacial Toughening

Wang¹,

Zhang²,

Jiang³

2017

dtcse

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The interfacial fracture and delamination mechanism of a concrete beam reinforced by carbon-fiber reinforced plastic was investigated in this study. Short aramid fiber mats were applied between the carbon-fiber cloth and concrete to improve the interfacial toughness. Four-point bending tests (FPB) were carried out to determine measure the critical strain energy release rate. By testing specimen with different amount of carbon-fiber cloth and aramid-fiber mat, the thickness influence was also investigated. SEM image of the splitting fibers explains the enhancement of the critical energy release rate the enhancement of the critical energy release rate was studied by EM image of the splitting fibers. The critical energy release rate of the interfacial delamination was also evaluated through the Finite element analysis (FEA) simulation and was used to verify the experimental result.

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Interlaminar toughness of interleaved CFRP using non-woven veils: Part 1. Mode-I testing

Cited by 101 publications

References 29 publications

Interfacial toughening and consequent improvement in fracture toughness of carbon fiber reinforced epoxy resin composites: induced by diblock copolymers

Interfacial toughening and consequent improvement in fracture toughness of carbon fiber reinforced epoxy resin composites: induced by diblock copolymers

Formation of interfacial network structure via photo-crosslinking in carbon fiber/epoxy composites

Carbon-fiber Reinforced Concrete with Short Aramid-fiber Interfacial Toughening

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