The effect of nanomodified epoxy on the tensile and flexural properties of Napier fiber reinforced composites

Ramli, W. M. A. Wan; Majid, M.S. Abdul; Ridzuan, M.J.M.; Sultan, Mohamed Thariq Hameed; Amin, N.A.M.; Gibson, A.G.

doi:10.1002/pc.25413

Cited by 31 publications

(10 citation statements)

References 53 publications

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“…Images of the fractured surface specimens were observed using an accelerating voltage of 15 kV for appropriate magni cation and visualisation. Before the FESEM observation, the specimen was uniformly coated with platinum to reduce charging and get better imaging [12].…”

Section: Mechanical Characterisationmentioning

confidence: 99%

WITHDRAWN: Effect of water absorption on graphene nanoplatelet and multiwalled carbon nanotubes- impregnated glass-reinforced epoxy composites

Ahmad

Ridzuan

Majid

et al. 2023

Preprint

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In this study, the effect of water uptake on graphene nanoplatelets (GNP) and multiwalled carbon nanotube (MWCNT)-impregnated glass-reinforced epoxy composites was examined. The composite was manufactured using a hand lay-up and vacuum bagging technique. The nanofiller was mixed with epoxy using a mechanical stirrer, high-shear mixer, and ultrasonic probe machine. In situ electromechanical testing was performed on the specimens. The study found that the weight content and type of nanofiller impact the composites' water uptake and mechanical properties. The water uptake of GNP–glass, MWCNT–glass, and GNP–MWCNT–glass hybrid composites decrease with the addition of different nanofiller contents. Adding a 1.5 GNP–MWCNT hybrid mixture increased the composite's tensile and flexural strengths to 269.3 and 294.4 MPa, respectively. The GNP–MWCNT–glass hybrid composite shows a positive synergy effect on the enhancement of water-ageing with self-sensing ability, while the GNP–glass, MWCNT–glass composites show a less positive effect on water ageing sensing behaviour. The nanofillers dispersion and fracture surface morphological observations were disclosed using a field emission scanning electron microscope. The results established that the GNP–MWCNT–glass hybrid exhibits good potential for in situ damage monitoring of composites and can support their development and application as a smart material.

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Section: Mechanical Characterisationmentioning

confidence: 99%

WITHDRAWN: Effect of water absorption on graphene nanoplatelet and multiwalled carbon nanotubes- impregnated glass-reinforced epoxy composites

Ahmad

Ridzuan

Majid

et al. 2023

Preprint

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“…Increased LFA content causes particle clustering, increased microgaps, and inappropriate nanoparticle dispersion. The same trend in results was perceived 46,56.…”

supporting

confidence: 72%

“…To weigh and design the appropriate amount of fiber, epoxy, and filler material, equation (1) was employed. 45,46 A motorized blender set to 2000 r/min was used to blend epoxy and LFA to create a homogeneous composition. The CGFs were initially placed inside a 300 mm × 300 mm × 3 mm mold cavity, and the homogeneous composition was discharged.…”

Section: Methodsmentioning

confidence: 99%

Calotropis gigantea stem fiber reinforced thermoset plastics: Interlaminar shear strength and related tribo-mechanical properties

KG¹,

GK²,

Kalaichelvan

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part L:

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This study examines the effects of lignite fly ash as a filler on the tribological and mechanical performance of a Calotropis gigantea fiber–epoxy composite. The investigation results show that the Calotropis gigantea fiber/epoxy composite with 2 wt.% lignite fly ash nanofiller added had better tensile strength, interlaminar shear, impact strength, and flexural strength than the control sample by 29.83%, 58.17%, 69.16%, and 11.41%, respectively. The manufactured composite samples were subjected to tribological tests, such as the friction coefficient and specific wear rate under dry sliding conditions with various process variables, such as sliding speed (1–3 m/s), functional load (10, 20, and 30 N), and sliding distance (1000 m). The results show that adding 3 wt.% nanofiller lignite fly ash to the Calotropis gigantea fiber/epoxy composites greatly improves the specific wear rate and friction coefficient. Additionally, the performance of the Calotropis gigantea fiber/epoxy composites in absorbing moisture was enhanced by the inclusion of the nanofiller lignite fly ash 2 wt.%. Likewise, the composite sample developed with the ideal nanofiller lignite fly ash with Calotropis gigantea fiber may be used for sustainable brake materials owing to its superior mechanical and tribological qualities.

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“…[35] Nanoclay (NC) fillers, on the other hand, have attracted a lot of attention from the scientific community because of their availability, low cost, intercalation capabilities, and high aspect ratio. [36][37][38] Although its positive effect on the mechanical and bearing performances of FRP laminates is known, [39,40] there are no reports on how NCs aid the damage tolerance of bolted composites subjected to LVI loads by toughening mechanisms.…”

Section: Introductionmentioning

confidence: 99%

Assessment of damage tolerance of bolted composite structures via “bearing‐after‐impact” tests

Kaybal

2022

Polymer Composites

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Although bolted composite joints are mainly designed to resist bearing loading, dynamic loading such as low‐velocity impact can also be a severe threat because of its potential to reduce joint reliability. Surprisingly, it is still unclear how bolted composite joints perform after the dynamic loading, and its effect on the damage tolerance is unknown likewise. This study aims to evaluate experimentally the bearing‐after‐impact (BAI) damage tolerance of bolted glass‐fiber (GF) reinforced epoxy composite joints. For this, the GF/epoxy composite laminates were assembled in single‐lap shear joints firstly, and the bolted composite joints were subjected to low‐velocity impact tests at various energy levels from 3 to 10 J. Following that, standardized bearing tests were carried out to determine the damage tolerance of the laminated composites following the impact. Nanoclay fillers were also added to the epoxy matrix to improve damage tolerance. After the low‐velocity impact loading, the bearing strength diminishes by almost 22% for the bolted composite joints, while the reduction in damage tolerance is effectively limited with the nanoclay addition. However, as the impact energy increases, the efficiency of the nanofiller declines. Increased impact energy results in changes in failure modes, and nanofillers improve damage tolerance with additional nano‐scale toughness‐increasing mechanisms.

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The effect of nanomodified epoxy on the tensile and flexural properties of Napier fiber reinforced composites

Cited by 31 publications

References 53 publications

WITHDRAWN: Effect of water absorption on graphene nanoplatelet and multiwalled carbon nanotubes- impregnated glass-reinforced epoxy composites

WITHDRAWN: Effect of water absorption on graphene nanoplatelet and multiwalled carbon nanotubes- impregnated glass-reinforced epoxy composites

Calotropis gigantea stem fiber reinforced thermoset plastics: Interlaminar shear strength and related tribo-mechanical properties

Assessment of damage tolerance of bolted composite structures via “bearing‐after‐impact” tests

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