The interlaminar and intralaminar fracture toughness of carbon-fibre/polymer composites: The effect of temperature

Cowley, Kevin D.; Beaumont, Pwr

doi:10.1016/s0266-3538(97)00047-x

Cited by 83 publications

(33 citation statements)

References 21 publications

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“…(Jackson and Ratcliffe [7] found that the stress intensity factor is not affected significantly by the morphology of The data reduction for CT or CC specimens made of an orthotropic material requires particular attention. Other researchers have used the stress intensity factor approach [2,8,9], often citing the ASTM standard E399 [10] for the determination of the fracture toughness in metals using CT tests [2,8].…”

Section: Test Methods and Data Reductionmentioning

confidence: 99%

Fracture toughness of the tensile and compressive fibre failure modes in laminated composites

Pinho

Robinson

Iannucci

2006

Composites Science and Technology

468

260

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Section: Test Methods and Data Reductionmentioning

confidence: 99%

Fracture toughness of the tensile and compressive fibre failure modes in laminated composites

Pinho

Robinson

Iannucci

2006

Composites Science and Technology

468

260

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“…Unlike the Mode I DCB specimens, which exhibit continuous crack growth along the fiber/matrix interface, Mode II ENF specimens show discontinuous crack growth by micro-crack coalescence, leading to the development of hackles at the fracture surface. In Mode II loading, fiber bridging is a less important toughening mechanism than in Mode I failure [30,38]. It is postulated that in Mode II nanotube bundles act as rigid fillers which arrest the crack, preventing or delaying the expansion of microcracking within the matrix-rich interface area.…”

Section: Modes I and Ii Interlaminar Fracture Toughnessmentioning

confidence: 99%

Enhancement of mechanical performance of epoxy/carbon fiber laminate composites using single-walled carbon nanotubes

Ashrafi

Guan

Mirjalili

et al. 2011

Composites Science and Technology

212

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Carbon nanotubes (CNT) in their various forms have great potential for use in the development of multifunctional multiscale laminated composites due to their unique geometry and properties. Recent advancements in the development of CNT hierarchical composites have mostly focused on multi-walled carbon nanotubes (MWCNT). In this work, single-walled carbon nanotubes (SWCNT) were used to develop nano-modified carbon fiber/epoxy laminates. A functionalization technique based on reduced SWCNT was employed to improve dispersion and epoxy resin-nanotube interaction. A commercial prepregging unit was then used to impregnate unidirectional carbon fiber tape with a modified epoxy system containing 0.1 wt% functionalized SWCNT. Impact and compression-after-impact (CAI) tests, Mode I interlaminar fracture toughness and Mode II interlaminar fracture toughness tests were performed on laminates with and without SWCNT. It was found that incorporation of 0.1 wt% of SWCNT resulted in a 5% reduction of the area of impact damage, a 3.5% increase in CAI strength, a 13% increase in Mode I fracture toughness, and 28% increase in Mode II interlaminar fracture toughness. A comparison between the results of this work and literature results on MWCNT-modified laminated composites suggests that SWCNT, at similar loadings, are more effective in enhancing the mechanical performance of traditional laminated composites.Crown

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“…The test methods most commonly used are the centre-notched tension [1], surface-notched tension [1], Compact Tension (CT) [1][2][3][4][5], Three Point Bending (TPB) [1,6,2,7], Four Point Bending (FPB) [8,9], double edge notch [7], double cantilever beam [10] and the wedge insert fracture [11]. Investigations into size effects for the CT specimen [1] and for the FPB [9] concluded in both cases that the effect of specimen dimensions did not affect the fracture toughness appreciably.…”

mentioning

confidence: 99%

Developing a four point bend specimen to measure the mode I intralaminar fracture toughness of unidirectional laminated composites

Pinho

Robinson

Iannucci

2009

Composites Science and Technology

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The use of a four point bend test is investigated for the measurement of intralaminar toughness of unidirectional carbon fibre composites. A key element of the investigation is the process of producing a sharp pre-crack and the effect of this on the measured toughness. A method is presented in which the pre-crack is produced during the layup and cure process and this is shown to cause minimal distortion of the plies of the laminate. The test results show good consistency and low scatter.

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The interlaminar and intralaminar fracture toughness of carbon-fibre/polymer composites: The effect of temperature

Cited by 83 publications

References 21 publications

Fracture toughness of the tensile and compressive fibre failure modes in laminated composites

Fracture toughness of the tensile and compressive fibre failure modes in laminated composites

Enhancement of mechanical performance of epoxy/carbon fiber laminate composites using single-walled carbon nanotubes

Developing a four point bend specimen to measure the mode I intralaminar fracture toughness of unidirectional laminated composites

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