Effect of fiber orientation on the shear behavior of glass fiber/epoxy composites

Almeida, José Humberto S.; Angrizani, Clarissa Coussirat; Botelho, Edson Cocchieri; Amico, Sandro Campos

doi:10.1016/j.matdes.2014.10.003

Cited by 86 publications

(51 citation statements)

References 23 publications

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“…MPa for alumina/epoxy (Al/E) composite was previously reported [8], which is consistent with the current result, given double-notch shear strength is usually lower than values measured from short-beam shear (SBS) testing [53]. The shear strength value in Fig.…”

Section: In-plane Shear Testingsupporting

confidence: 93%

Hierarchical composites with high-volume fractions of carbon nanotubes: Influence of plasma surface treatment and thermoplastic nanophase-modified epoxy

Rider

Yeo

Gopalakrishna

et al. 2015

Carbon

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A scaled-up catalytic chemical vapor deposition synthesis approach has been used to grow carbon nanotubes (CNTs) onto quartz and alumina fibers to prepare novel hierarchically structured composites with high volume fractions of CNTs. The assynthesized CNT-coated fibers were functionalized using atmospheric oxygen plasma, prior to infusing an epoxy polymer matrix, in order to improve wettability and bonding.The polymer matrix was further modified by adding a triblock copolymer to provide nanoscale toughening. Direct adhesion tests show that CNT and plasma treatments increase the shear strength of quartz or alumina/epoxy films by 30%. CNT-quartz/epoxy composites show an 80% increase in the in-plane shear strength while the CNTalumina/epoxy composites show more than a three-fold increase in shear strength. The failure mechanisms of the films and the fiber composites are dominated by fracture through the catalytic iron nanoparticles and the improvements are limited by the CNT to fiber adhesion. The composites also have very high in-plane electrical conductivity, 2 over 3 S/cm. The carbon nanotubes form a piezoresistive sensing network surrounding the fibers. Under flexural loading the change in electrical resistance can detect damage initiation and impending fracture, particularly for the alumina composites.

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Section: In-plane Shear Testingsupporting

confidence: 93%

Hierarchical composites with high-volume fractions of carbon nanotubes: Influence of plasma surface treatment and thermoplastic nanophase-modified epoxy

Rider

Yeo

Gopalakrishna

et al. 2015

Carbon

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“…The individual thermal and mechanical effects on woven glass/epoxy composite have been explored extensively in literatures [19][20][21][22][23][24][25][26][27][28]. Ray [19] evaluated the deleterious effect of temperature on shear strength of glass/epoxy composites during hygrothermal aging, and found that higher temperature not only increased the moisture uptake rate but also stimulated the delamination nucleation.…”

Section: Introductionmentioning

confidence: 99%

“…Baucom et al [22,23] studied the damage accumulation in two-dimensional and three-dimensional woven glass fiber-reinforced composite panels under transverse drop-weight impact loading conditions. Mahdi et al [24] and Almeida et al [25] studied the fabric layout configuration effect on the mechanical property of glass fiber/epoxy composites, and found that fiber orientation had great influence on energy absorption capacity and shear strength of the composites. Sakin and Ay [26] data with the two-parameter Weibull distribution.…”

Section: Introductionmentioning

confidence: 99%

Deformation behavior of woven glass/epoxy composite substrate under thermo-mechanical loading

2015

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“…In this way, a more macroscopic method to assess fiber/matrix interface is more appropriate. The short beam test is suitable to correlate fiber orientation and interfacial stress transfer capability, easily enabling direct evaluation of interlaminar strength or indirect evaluation of interfacial strength .…”

Section: Introductionmentioning

confidence: 99%

Creep and interfacial behavior of carbon fiber reinforced epoxy filament wound laminates

et al. 2017

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This article focuses on the investigation of the interfacial and creep characteristics of carbon fiber‐reinforced epoxy laminates at different fiber orientations. Flat unidirectional 12‐layer laminates were manufactured by dry‐filament winding and cured under hot compression. The following winding sequences were studied: [0]12, [30]12, [45]12, [60]12, and [90]12. Short‐beam testing aided by microscopy and dynamic mechanical analysis were used to assess interfacial characteristics and creep behavior of the laminates. Short beam strength and creep behavior were strongly influenced by fiber orientation. Short beam strength decreased 270%, and only the laminates wound at 0° presented delamination purely at the mid‐plane. Fiber/matrix stress transfer is more efficient for laminates wound at 0°, providing better creep behavior. Dynamic mechanical analysis results indicated the storage modulus to be dependent on the ply angle. Findley's and Burger's fitting were used to analyze creep data from the DMA and correlate structure and property of the composites. The creep strain increases from longitudinal to transversal fiber orientation and by increasing the temperature. At higher temperatures, samples longitudinally oriented exhibited an elastic behavior, with good agreement with the Findley's model. POLYM. COMPOS., 39:E2199–E2206, 2018. © 2017 Society of Plastics Engineers

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Effect of fiber orientation on the shear behavior of glass fiber/epoxy composites

Cited by 86 publications

References 23 publications

Hierarchical composites with high-volume fractions of carbon nanotubes: Influence of plasma surface treatment and thermoplastic nanophase-modified epoxy

Hierarchical composites with high-volume fractions of carbon nanotubes: Influence of plasma surface treatment and thermoplastic nanophase-modified epoxy

Deformation behavior of woven glass/epoxy composite substrate under thermo-mechanical loading

Creep and interfacial behavior of carbon fiber reinforced epoxy filament wound laminates

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