Failure study of the woven composite material: 2.5 D carbon fabric/ resin epoxy

Gherissi, Abderraouf

doi:10.15282/jmes.13.3.2019.12.0438

Cited by 7 publications

(7 citation statements)

References 24 publications

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“…where t , j , and w are the lengths of the thinner CNT, the junction region, and the wider CNTs, respectively. As aforementioned, the chirality of the connected CNTs for linearly-joined CNT was (5,5) and (10,10) armchair tube. For the case of angle-adjoined hybrids, a (5,5) armchair CNT is joined with a (10,0) zigzag CNT.…”

Section: Modelling Detailsmentioning

confidence: 88%

“…Carbon Nanotubes (CNTs) and their degenerated modifications including nanocones, capped CNTs, fullerene, Yjunctions, linearly-joined and angle-adjoined CNTs, are a class of promising low-dimensional materials used in the electronics, composites, and energy conversion areas, which performance are directly related to their mechanical properties and stabilities [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16]. The buckling of nanomaterials under compression loading, is influenced by the physical height of the models, their axial symmetry, relative position to normal reference plane and their fixation mode.…”

Section: Introductionmentioning

confidence: 99%

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Effects of geometric variations on buckling properties of carbon nanostructures: A finite element analysis

Golesorkhie¹,

Navi²

2020

JMES

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Critical Bucking Load (CBL) is one of the essential parameters to describe the mechanic stabilities of materials, e.g. the low-dimensional carbon nanostructures. While the CBL of pristine carbon nanotubes have been previously investigated using the quantum mechanics-based calculations, the effect of geometrical variation on the CBL of carbon nanomaterials is rarely reported since it need considerably large atomic models, which needs high computational cost. In this study, both the analytical and Finite Element (FE) methods were employed to systematically explore the impact of atomic vacancies, shapes and heterostructures on the CBLs of carbon nanomaterials with the acceptable computational cost. Our studies on the pristine CNTs first demonstrate the validity of the method we used. After that, the systems with mono-/bi-/tri-/pinole-vacancies either on nanocones, nanotube, linearly-joined nanotubes or angle-adjoined were simulated and analyzed. Our results reveal that the CBL values decrease with the increase of the aspect ratio of all considered nanomaterials. Based on the obtained results, the CBL of nanocone with the aspect ratio of 1, reduces significantly, from 50 nN to 10 nN when the aspect ratio is 3. The CBL of homogeneous, capped, and joint CNTs reduces to below 2 nN when the aspect ratio is above 14. The introduction of geometric variations can greatly affect the CBL values. The larger atomic vacancy has more serious impact on the CBLs. The most highlighted impact is for the pinhole vacancy where the CBL reduces to up to 70% of the original value. Our studies on linearly-joint and angle-joint carbon hybrids further demonstrate that the CBL can also be affected by the boundary conditions and joint structures of the hybrids.

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Section: Modelling Detailsmentioning

confidence: 88%

Section: Introductionmentioning

confidence: 99%

Effects of geometric variations on buckling properties of carbon nanostructures: A finite element analysis

Golesorkhie¹,

Navi²

2020

JMES

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“…Patch repairing method is one of the most economical techniques which are used to repair damaged structures. Healing cracked structure using composite patch has increased considerably in recent years [5][6][7]. Patch is bonded at damaged area to support a structure against different types of external loading.…”

Section: Introductionmentioning

confidence: 99%

“…− and x + in Equations (4)(5)(6)(7)(8)(9)(10)(11)(12)(13)(14)(15). indicate the location immediately before and after connection points.…”

mentioning

confidence: 99%

Composite patch reinforcement of a cracked simply-supported beam traversed by moving mass

Aldlemy¹,

Al-Jumaili²,

Al-Mamoori³

et al. 2020

JMES

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In this study dynamic analysis of a metallic beam under travelling mass was investigated. A beam with an edge crack was considered to be reinforced using composite patch. Euler-Bernoulli beam theory was applied to simulate the time-history behavior of the beam under dynamic loading. Crack in the beam was modeled using a rotational spring. Dimension of the composite patch, crack length, stress intensity factor at crack tip and beam deflection are some parameters which were studied in details. Results were validated against those which were found through Finite Element Method.

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“…It was found that FE simulation shows a good agreement with experimental result on the tensile properties. From author point of view, this study significantly contributes in cost and time saving because the failure mode of the investigated material can be predicted using a multiscale simulation approach and potentially being applied to other composite materials [17].…”

Section: Introductionmentioning

confidence: 99%

Strain rates effect of dynamic compression properties of E-glass / jute composite

Jusoh

Yahya

Ahmad

2020

JMES

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Presently, the application of natural fibres widely gains attention from academia and industries as an alternative material in the composite system. The introduction of the hybrid composite using natural and synthetic fibres is extensively investigated on the static mechanical properties. However, the investigation on the high strain-rates effect is less reported due to the difficulty of the experimental set-up as well as the limitation of dynamic testing apparatus. The split Hopkinson pressure bar (SHPB) was utilised in this present study to characterise the dynamic mechanical properties of the hybrid composite between E-glass with jute fibres at three different strain rates of 755, 1363, and 2214 s−1. Results showed that the dynamic compression stress and strain of the tested samples significantly influenced by the value of strain rates applied. The E-glass/jute sample exhibited the strain-rate dependent behaviour, whereby the higher dynamic mechanical properties were recorded when the higher strain rates were imposed. The difference between maximum dynamic stress was 12.1 and 23.9% when the strain rates were increased from 755 to 1363 s−1 and 1363 to 2214 s−1, respectively. In terms of compressive strain, the maximum compressive strain was recorded when the lower strain rates were imposed during testing.

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Failure study of the woven composite material: 2.5 D carbon fabric/ resin epoxy

Cited by 7 publications

References 24 publications

Effects of geometric variations on buckling properties of carbon nanostructures: A finite element analysis

Effects of geometric variations on buckling properties of carbon nanostructures: A finite element analysis

Composite patch reinforcement of a cracked simply-supported beam traversed by moving mass

Strain rates effect of dynamic compression properties of E-glass / jute composite

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