A novel study of flexural behavior of short glass fibers as secondary reinforcements in GFRP composite

Dasari, Srinivasu; Lohani, Shiny; Dash, Soumya Sumit; Fulmali, Abhinav Omprakash; Prusty, Rajesh Kumar; Ray, Bankim Chandra

doi:10.1016/j.matpr.2021.07.161

Cited by 7 publications

(7 citation statements)

References 23 publications

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“…Therefore, SCF/polymer composites cost more than DGF/polymer composites. However, a high aspect ratio of SCF permits load transfer efficiently from the soft polymer epoxy to the corresponding stiffer SCFs, which is essential for improving the mechanical properties of the modified composite 42–44 …”

Section: Introductionmentioning

confidence: 99%

“…However, a high aspect ratio of SCF permits load transfer efficiently from the soft polymer epoxy to the corresponding stiffer SCFs, which is essential for improving the mechanical properties of the modified composite. [42][43][44] Patnaik et al 45 examined the fiber loading impact on the mechanical, physical and thermo-mechanical performance of woven and SCF-reinforced matrix composites. Capela et al 46 deliberated the length of short carbon fiber impact (2, 4, and 6 mm) and weight fraction (45%-75%) on the tensile and visco-elastic behavior of the resulting polymer composites.…”

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Temperature‐dependent inter‐laminar fracture behavior of waste short carbon fiber embedded glass fiber/epoxy composites

2023

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Delamination is one of the life‐limiting failure modes for fiber reinforced polymer (FRP) composite composites resulting in poor damage tolerance, as this failure mode occurs at considerably lower loads. Owing to the enormous demand and mass production of FRP composites, a large amount of fiber waste is produced worldwide. This triggers concern about utilizing these fiber wastes for some valuable applications. The present study aims to improve the overall damage tolerance of laminated glass/epoxy composites via the introduction of waste short carbon fibers (SCFs) reinforcement in the epoxy matrix. The effect of various SCF contents (0.1, 0.3, and 0.5 wt%) in glass fiber/epoxy composites were evaluated experimentally for their interlaminar fracture toughness in terms of both crack development and propagation under mode I and II interlaminar fracture toughness tests, at elevated temperatures (30, 50, and 70°C). Based on the experimental results, glass/epoxy composite with 0.1 wt% of SCF revealed 13.49% and 20.45% increment in mode I and II interlaminar fracture toughness, respectively, at ambient temperature. A positive reinforcement effect could be noticed for GIC and GIIC values up to 50°C. However, due to residual interfacial stresses, interfacial debonding, and epoxy softening, a negative reinforcement effect could be noticed at 70°C. Delamination initiation and crack propagation mechanisms have been explored at elevated temperatures. Fractographic studies have been carried out using a scanning electron microscope to identify the failure mechanisms.

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confidence: 99%

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Temperature‐dependent inter‐laminar fracture behavior of waste short carbon fiber embedded glass fiber/epoxy composites

2023

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“…The addition of more than one type of reinforcement may improve specific properties, reducing the detriments of each reinforcement, for example, the high stiffness carbon fiber (CF) can recompense for the glass fiber's (GF) low mechanical resistance, which can lead to better flexural performance and at a marginally higher cost. [ 30–38 ] These FRP composites reinforced with more than one type of fibers are known as hybrid composites, as defined by Swolfs et al [ 30,39–41 ] CF has excellent strength and stiffness when compared to GF. [ 30,42–44 ] However, GF benefits from significantly lesser price, an important economic factor for mass production in industries.…”

Section: Introductionmentioning

confidence: 99%

Mode I and II interlaminar fracture toughness of glass/carbon inter‐ply hybrid FRP composites: Effects of stacking sequence and testing temperature

et al. 2023

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Even though laminated FRP composites show exceptional performance in various modes of loading, they are susceptible to delamination. The ambient temperature and elevated temperature delamination resistance of glass/carbon fiber interply hybrid composites were assessed via mode I and mode II interlaminar fracture toughness tests performed at 30, 50 and 70 C. Interply hybrid composites performed better than composites with single type of fiber. The fracture toughness of inter-ply hybrid composites varied with the stacking position. At 30 C, mode I fracture toughness value of alternative glass and carbon fiber stacking sequence (G 1 C 1 ) 5 of hybrid composite showed 40% improvement over 10 layered carbon/epoxy (C 10 ) composite. Further, Mode II fracture toughness of C 5 G 5 composite showed 22% enhancement, and C 10 exhibited 42% improvement over 10-layered glass/epoxy composite. Increasing the test temperature of all composites improved their G IC and G IIC values. The increment in the mode I fracture toughness properties of all composite was in the range of 5%-23% at 70 C from its room temperature value. The fractographic images of fractured samples were studied under a scanning electron microscope and failure mechanisms of composites were identified. K E Y W O R D Shigh temperature durability, inter-ply hybrid composite, mode I ILFT, mode II ILFT, stacking sequence of glass and carbon fibers

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“…Even though the universal demand for FRP composite is enhancing yearly, feasible industries like aerospace, automobile, and wind energy produce thousands of tons of waste. [ 65–67 ] These fibers are less costly to recycle without causing an environmental effect. Massive trash recycling and reuse is a crucial end‐of‐life strategy for sustainability and waste management.…”

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confidence: 99%

Effects of in‐situ cryogenic testing temperature and ex‐situ cryogenic aging on the mechanical performance of glass fiber reinforced polymer composites with waste short carbon fibers as secondary reinforcements

et al. 2022

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Composite components' fabrication generates vast amounts of fiber wastes. This research suggests using short carbon fibers (SCFs) as secondary reinforcement in glass fiber reinforced polymer (GFRP) composite for cryogenic application. The SCFs (0.1, 0.3, and 0.5 wt%) were embedded in GFRP composites.Flexural test was performed to assess the integrity and durability of composites at in-situ cryogenic temperature (CT), and after ex-situ cryo-aging in liquid nitrogen for various time intervals (0.25, 0.5, 1, 2, 4, 8, and 16 h). The composite with 0.1 wt% of SCFs showed the highest enhancement in flexural performance in all testing conditions, $16% at Room Temperature (RT), $12% at Cryogenic Temperature (CT, and between 13% and 39% after cryo-aging. Composites with SCFs retained their strength at CT and after cryo-aging, suggesting that the waste fibers could be economically reused and preferred over other expensive nanofillers as secondary reinforcements in GFRP composites for cryogenic applications.

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A novel study of flexural behavior of short glass fibers as secondary reinforcements in GFRP composite

Cited by 7 publications

References 23 publications

Temperature‐dependent inter‐laminar fracture behavior of waste short carbon fiber embedded glass fiber/epoxy composites

Temperature‐dependent inter‐laminar fracture behavior of waste short carbon fiber embedded glass fiber/epoxy composites

Mode I and II interlaminar fracture toughness of glass/carbon inter‐ply hybrid FRP composites: Effects of stacking sequence and testing temperature

Effects of in‐situ cryogenic testing temperature and ex‐situ cryogenic aging on the mechanical performance of glass fiber reinforced polymer composites with waste short carbon fibers as secondary reinforcements

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