Tensile Response of Epoxy and Glass/Epoxy Composites at Low and Medium Strain Rate Regimes

Gurusideswar, S.; Srinivasan, Nedunchezhian; Velmurugan, R.; Gupta, Neelam

doi:10.1016/j.proeng.2016.12.148

Cited by 36 publications

(14 citation statements)

References 11 publications

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“…Experimental Hopkinson bar tests have shown that the influence of the strain rate on glass fibre composites is not negligible, and the tensile strength at high strain rate was more than twice that under quasi-static loading [1]. Similar results were recently reported for a glass/epoxy composite at medium strain rate regimes [2]. Indeed, strain rate sensitivity has a considerable influence on several mechanical properties.…”

Section: Introductionsupporting

confidence: 77%

“…Focusing on R-glass fibre, Gurusideswar et al [2] conducted tensile tests for unidirectional laminates with this fibre. Moreover, they conducted tests on pure epoxy under different strain rates.…”

Section: Strain Rate Influence On the Fibrementioning

confidence: 99%

“…With these parameters, strength of the pure fibre under longitudinal tensile tests at different strain rates was obtained. The reported data in [2], led to the calculation of the K function shown in Eq. (5).…”

Section: Strain Rate Influence On the Fibrementioning

confidence: 99%

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Ballistic strain-rate-dependent material modelling of glass-fibre woven composite based on the prediction of a meso-heterogeneous approach

Manes

Amico

et al. 2019

Composite Structures

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An effective and efficient methodology based on a strain-rate-dependent material model that can be applied to the simulations of ballistic impact on woven composites is presented in this paper. Firstly, a meso-heterogeneous model (fibre and matrix separately modelled) of R-glass-fibre woven composite was built and validated by tensile tests. Then, the model was used to obtain a strain-rate-dependent homogeneous material model with low computational cost and with a novel numerical environment to simulate high-velocity impact of the composite. Later, the proposed simulation framework was validated by conducting ballistic tests on the woven composite using full metal jacket (FMJ) projectiles. Exploiting strain-rate-dependent homogeneous material model, more accurate predictions of the composite delamination area and the residual velocity of projectiles were obtained compared to that without considering strain rate effects, especially for thick woven composites. The strain rate effect on targets with different thicknesses and the projectile deformation were also analysed.

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Section: Introductionsupporting

confidence: 77%

Section: Strain Rate Influence On the Fibrementioning

confidence: 99%

See 1 more Smart Citation

Ballistic strain-rate-dependent material modelling of glass-fibre woven composite based on the prediction of a meso-heterogeneous approach

Manes

Amico

et al. 2019

Composite Structures

View full text Add to dashboard Cite

show abstract

“…Shokrieh and Omidi [14] did tensile tests on unidirectional glass/epoxy composites at different strain rates, from 0.001 to 100 s −1 , and reported increases in tensile strength, modulus, strain to failure and absorbed energy of 52%, 12%, 10% and 53%, respectively. A similar trend was observed for glass/epoxy composites in another study [15]. On the other hand, tensile tests by Taniguchi et al [16] on unidirectional carbon fibre reinforced plastics under a high strain rate, from 0.001 to 100 s−1, demonstrated that the tensile modulus and strength in the longitudinal direction are independent of the strain rate.…”

Section: Introductionsupporting

confidence: 81%

The high strain rate tension behaviour of pseudo-ductile high performance thin ply composites

Fotouhi

Fuller

Longana

et al. 2019

Composite Structures

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In this study the effect of strain rate in tension on two different types of thin-ply pseudo-ductile laminates is reported. These comprised Unidirectional (UD) and quasi-isotropic (QI) hybrids made from low strain thin-ply carbon/epoxy and high strain glass/epoxy prepreg and all-carbon laminates made from thin-ply [±ϴ/0]s laminates referred to as angle-ply (AP) composites. Laminates were designed and subjected to a range of cross-head speeds from 2 mm/min (0.0003 s-1) to 10 m/s (100 s-1). The designed laminates were made from single or hybrids of low strain and high strain unidirectional prepregs, i.e. thin-ply Carbon/epoxy and Glass/ epoxy, respectively. Dynamic stress-strain plots and details of the damage mechanisms were obtained for each sample and compared with the quasi-static test results. The investigated thin-ply UD and QI hybrid composite laminates showed excellent pseudo-ductility at different strain rates, whereas the AP laminates were strain rate dependent and pseudoductility decreased with increasing strain rate.

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“…They observed that the poison ratios were not dependent on strain rate. Gurusideswar et al [8] examined tensile behavior of glass fiber reinforced epoxy composites produced by hand lay-up methods and epoxy produced by casting by exposing them to low and medium strain rates (from 0.0001 s -1 to 450 s -1 ). For epoxy and glass-epoxy composites, they observed that the tensile strength and modulus were sensitive, even at low strain rates, and that these values increased as the strain rate increased.…”

Section: Introductionmentioning

confidence: 99%

Cam Fiber Takviyeli Epoksi Kompozitleri Farklı Yükleme Hızlarında Eğilme Özellikleri

Demircan¹,

Özen²,

Kısa³

2020

Deu Muhendislik Fakultesi Fen Ve Muhendislik

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Composite materials are exposed to various loading speeds when considering the application areas. Understanding how strain rates affect the behavior of composite materials and estimating this behavior constitute one of the important work areas. In this work, glass fiber reinforced epoxy composites were produced and their mechanical behaviour under various strain rates (2.5 mm/min, 5 mm/min and 10 mm/min) was investigated. Strain rates was based on crosshead speed. Composite plates were produced by VARIM (Vacuum Assisted Resin Infusion Method). The samples were cut according to ASTM standards and then three-point bending test was applied to understand flexural behaviour of glass fiber reinforced epoxy composites. Composite plates were prepared as three different fiber orientations (0°, 45°, 90°) and the effect of different strain rates on different fiber orientations was investigated. As a result, as strain rate increases, the flexural stress increases and there is no meaningful change in the modulus of elasticity and deflection. In addition, the most affected fiber orientation is 45° fiber orientation for flexural stress.

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Tensile Response of Epoxy and Glass/Epoxy Composites at Low and Medium Strain Rate Regimes

Cited by 36 publications

References 11 publications

Ballistic strain-rate-dependent material modelling of glass-fibre woven composite based on the prediction of a meso-heterogeneous approach

Ballistic strain-rate-dependent material modelling of glass-fibre woven composite based on the prediction of a meso-heterogeneous approach

The high strain rate tension behaviour of pseudo-ductile high performance thin ply composites

Cam Fiber Takviyeli Epoksi Kompozitleri Farklı Yükleme Hızlarında Eğilme Özellikleri

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