Contrasts on Fracture Toughness and Flexural Strength of Varying Percentages of SLG-reinforced Phenolic Composites

Ku, Harry S.; Fok, S.C.; Σιώρης, Ηλίας

doi:10.1177/0021998308103159

Cited by 2 publications

(2 citation statements)

References 16 publications

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“…There are many reported works on natural fiber composites as far as their mechanical (tensile, flexural, and impact), thermal, and environmental behaviors are concerned [7][8][9][10][11][12]. However, there are limited reported works relating to the investigation of fracture toughness behavior of natural fiber composite materials [13][14][15][16].…”

Section: Introductionmentioning

confidence: 99%

“…Despite these advantages, applications of natural fiber composites have been restricted to non‐structural applications, mainly in automotive interior components. There are many reported works on natural fiber composites as far as their mechanical (tensile, flexural, and impact), thermal, and environmental behaviors are concerned . However, there are limited reported works relating to the investigation of fracture toughness behavior of natural fiber composite materials .…”

Section: Introductionmentioning

confidence: 99%

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Effect of hybridization on the mode II fracture toughness properties of flax/vinyl ester composites

et al. 2015

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In this study, flax fiber reinforced and flax/basalt hybridized vinyl ester composites were produced and their interlaminar fracture toughness (mode II) behavior was investigated using the three-point bend end-notched flexural (3ENF) testing. From the results, the average of the maximum values for each group of specimen obtained for critical strain energy release rate G IIC and stress intensity factor K II for flax/vinyl ester specimens were 1,940 J/m 2 and 134 kPam 0.5 . Similarly, G IIC and K II values recorded for hybridized specimens were 2,173 J/m 2 and 178 kPam 0.5 , respectively. The results for the flax/basalt hybridized composites exhibited an improved fracture toughness behavior compared to flax/vinyl ester composites without hybridization. The cohesive zone modeling (CZM) was also used to predict the delamination crack propagation in mode-II in laminated composite structures. After the experimental study, the 3ENF specimens were modeled and simulated using ANSYS. The CZM/FEA results were in reasonable agreement with the experimental results.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effect of hybridization on the mode II fracture toughness properties of flax/vinyl ester composites

et al. 2015

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Fracture Toughness of Vinyl Ester Composites Reinforced with Sawdust and Postcured in Microwaves

Prajapati

Trada

2012

International Journal of Microwave Science and Technology

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A commercial vinyl ester resin supplied by Hetron Chemical Pty. was reinforced with varying percentages by weight of sawdust. The sawdust particles were sieved into 3 different sizes, which were <300 μm, 300-425 μm, and 425-1180 μm, respectively, with a view to increase its fracture toughness for civil and structural applications. The sawdust used varied from 0% w/t to 15% w/t in step of 5% w/t. For higher w/t% of sawdust, the mixture would be too sticky to be mixed and cast. The cast composites were cured in ambient conditions and then postcured in microwave irradiation. They were then tested for fracture toughness using short bar tests. The values of fracture toughness of the composites increased with increasing particulate size, and this is due to the size distribution of the filler. It was found that the optimum amount of sawdust (425-1180 μm) was 15% w/t, with which the increase in fracture toughness was 126% as compared to neat resin and the reduction in cost was 15%. Furthermore, the optimum amount of sawdust (300-425 μm) was also 15% w/t, with which the increase in fracture toughness was 28.3% as compared to neat resin and the reduction in cost was again 15%.

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Contrasts on Fracture Toughness and Flexural Strength of Varying Percentages of SLG-reinforced Phenolic Composites

Cited by 2 publications

References 16 publications

Effect of hybridization on the mode II fracture toughness properties of flax/vinyl ester composites

Effect of hybridization on the mode II fracture toughness properties of flax/vinyl ester composites

Fracture Toughness of Vinyl Ester Composites Reinforced with Sawdust and Postcured in Microwaves

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