Low-velocity impact behavior of glass fiber epoxy composites modified with nanoceramic particles

Kallagunta, Harish; Tate, Jitendra S.

doi:10.1177/0021998319893435

Cited by 19 publications

(12 citation statements)

References 16 publications

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“…In reality, composite materials are likely to be subjected to unintended shocks from a variety of sources, including aeronautics, tool drops during repair, impacts between two panels during assembly, bird strikes during service life, 13,14 and shocks or stone impacts in vehicles over the course of their lifetime. 15,16 Several research studies have been performed in recent years to further understand the impact behavior of synthetic fiber composites such as carbon, 17 glass, 18 and kevlar 19 in order to create structures that are more tolerant to low-velocity impact damage, which is determined by the material characteristics (matrix and fiber types, reinforcement architecture, stacking sequence, fibermatrix interface quality, and component thickness) as well as the impactor shape. 16,20 Impact damage reduces the residual mechanical strength of these structures, which has a major impact on their service life.…”

Section: Introductionmentioning

confidence: 99%

Characterization of low-velocity impact and post-impact damage of luffa mat composite using acoustic emission and digital image correlation

Grabi

Chellil

Habibi

et al. 2022

Journal of Composite Materials

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In this paper, low-velocity impact and compression after impact damage tolerance of composite reinforced with natural luffa mat were studied for the first time. The effect of impact energy and the influence of the damaged area on the residual mechanical properties under compression were investigated. Acoustic emission (AE), digital image correlation (DIC) and scanning electron microscopy (SEM) were used for the evolution of different damage modes and displacement fields. The findings of the experiments reveal that compression after impact tests of 1, 2, and 3J show a significant effect of the residual damage which decreases residual compressive strength by 12.61, 24.14, and 30.9%, respectively, compared to the unimpacted composite, but Young’s modulus was not significantly affected. Multivariable statistical analysis of the AE signals identified four classes of damage: matrix cracking, fiber-matrix debonding, delamination, and fiber failure. It also showed that the damage mode of unimpacted composites which presents the majority of the amplitude events of the AE signals is mainly due to fiber failure, by contrast, for impacted composites the damage mode is mainly due to fiber-matrix debonding. The AE results are convincing and they were confirmed by SEM images of the fractured faces of the specimens, which revealed the main causes of material failure during the compression after impact test. The DIC system monitored the effect of pre-existing damage under compressive loading and found that increasing impact energy increases the stress concentration around the impacted area and has a significant effect on residual crack development, much more in the loading direction.

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Section: Introductionmentioning

confidence: 99%

Characterization of low-velocity impact and post-impact damage of luffa mat composite using acoustic emission and digital image correlation

Grabi

Chellil

Habibi

et al. 2022

Journal of Composite Materials

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“…According to this study, an addition of 0.2 wt.% Cloisite 20A led to a significant increase in the maximum impact force (up to 25.7%) and a decrease in the maximum displacement (up to−29.08%). Kallagunta and Tate 9 compared the low-velocity impact behavior of the neat and nano-reinforced composites. The damage areas were evaluated by optical microscopy and infrared thermography.…”

Section: Introductionmentioning

confidence: 99%

Sensitivity of the impact performance of nano reinforced sandwich structures to the material and geometrical variations

Tofighi

Biglari

Shokrieh

2022

Journal of Composite Materials

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The low-velocity impact response of sandwich structures with aluminum face sheets and neat or nano-reinforced polypropylene core was studied. A strain-rate dependent micromechanics model (SRDM) was presented in the literature for predicting the dynamic behavior of nano-reinforced polymers. In the present study, the dynamic behavior of nano-reinforced polypropylene was simulated based on SRDM results. The finite element model was validated against the experimental results. It was shown that the results of the simulation performed by the SRDM model were in very good agreement with the experimental data. Then, the proposed finite element model was used for checking the sensitivity of the impact performance of nano-reinforced sandwich structures to the material and geometrical variations. A special sandwich structure with a core of 1 mm thickness and a face thickness of 1 mm was considered as the base structure. Different material and geometrical variations including doubling the thickness of the core or face sheets, a different weight ratio of graphene, and increasing material parameters of the face sheets up to 90%, were undertaken on the base structure. The results of the present study imply that the optimal amount of graphene should not exceed 0.5 wt.% to improve impact properties. The impact response of nano-reinforced sandwich structures was more sensitive to the variations of the face thickness in comparison to the variations of the core thickness. Moreover, the impact outputs were more sensitive to changes in the yield stress of faces compared to changes in Young’s modulus of faces.

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“…They reported that nanosilica particles were affecting the tensile, flexural, and energy absorption capacity of the glass/epoxy composites. Kallagunta and Tate [24] modified epoxy resin with 10 wt.% nano-silica to investigate the low-velocity impact behaviour of glass/epoxy composites under different impact energies. They reported that compared to unmodified composites, the nanoparticle modification resulted with high peak forces, also with rising impact forces, the density of failure mechanisms from matrix failure to fiber failure increases.…”

Section: Introductionmentioning

confidence: 99%

Influence of Nano-Silica on the Mechanical Properties of Jute/Glass Fiber Reinforced Epoxy Hybrid Composites

Erkliğ

Bozkurt

AL-TEKREETI³

2022

Çukurova Üniversitesi Mühendislik Fakültesi Dergisi

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Natural composites have gained importance recently due to increasing environmental factors and relatively low cost. Although their biodegradability, low density, and high processability, the use of natural fibers in composite materials as the only reinforcement phase faces with some challenges due to their disadvantages such as high moisture absorption and low mechanical properties. To overcome these issues, the natural fibers are generally utilized in composite materials by synthesizing with synthetic fibers. In this context, jute/epoxy composites have been hybridized with glass fiber layers and nano-silica particles to improve low mechanical properties, and the contributions of hybridization on mechanical properties are investigated through performing tensile, bending, and impact tests. Nano-silica particles in the ratio of 1%, 2%, and 3% by weight have been used in composite production. Three different hybrid configurations (G1J6G1, J3G2J3, J2G1J2G1J2) are tested as well as pure jute/epoxy and pure glass/epoxy composites. According to the experimental results, nano-silica additive has a significant effect on both non-hybrid and hybrid fiber reinforced composites. By using the glass fiber layer on the outer surface, the highest tensile strength, flexural strength, and impact behavior have been achieved in the G1J6G1 hybrid configuration.

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Low-velocity impact behavior of glass fiber epoxy composites modified with nanoceramic particles

Cited by 19 publications

References 16 publications

Characterization of low-velocity impact and post-impact damage of luffa mat composite using acoustic emission and digital image correlation

Characterization of low-velocity impact and post-impact damage of luffa mat composite using acoustic emission and digital image correlation

Sensitivity of the impact performance of nano reinforced sandwich structures to the material and geometrical variations

Influence of Nano-Silica on the Mechanical Properties of Jute/Glass Fiber Reinforced Epoxy Hybrid Composites

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