A comparative study on glass and carbon fibre reinforced laminated composites in scaled quasi-static indentation tests

Fotouhi, Mohammad; Damghani, Mahdi; Leong, Mun Choong; Fotouhi, Sakineh; Jalalvand, Meisam; Wisnom, Michael R

doi:10.1016/j.compstruct.2020.112327

Cited by 32 publications

(14 citation statements)

References 21 publications

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“…However, when the indenter is perpendicular to the fiber direction, the layered area expands in the fiber direction under a larger load. This is a completely different form of influence from the fiber stacking direction proposed in Ahmad et al, 26 O’Masta et al, 27 and Fotouhi et al 28 It is conceivable that when the indenter intrudes, the fiber in the 0° direction is similar to a cantilever beam, which is prone to fiber shear fracture. The fibers in the 90° direction are more like fixed beams and can better resist intrusion.…”

Section: Resultsmentioning

confidence: 89%

Experimental study on temporary fastening damage of composite structures

Chen¹,

Lin²,

Wang

2022

Proceedings of the Institution of Mechanical Engineers, Part B:

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An experimental investigation was conducted to determine the form and characteristics of damage that temporary fasteners may cause to the composite hole in the aviation temporary fastening process. According to the shapes of the temporary fastener clamping feet, copying indenters were designed. The similarity between the quasi-static indentation (QSI) experiment and the installation of temporary fasteners was discussed. The QSI experiment was used to investigate the influence of shapes of clamping feet, prepreg category, installation direction, and other factors on the failure of the composite hole, and the displacement-load curves were obtained. The damage morphology was observed with the optical microscope and ultrasonic microscope. The results show that the QSI experiment can simulate the temporary fastening damage well. Due to the expansion of delamination, and the final occurrence of fiber breakage in the composite hole, the bearing capacity is reduced. The temporary fastening damage process can be divided into three stages: in the elastic stage, the laminate does not suffer damage, and the surface resin appears slight dents; in the delamination stage, the layers delaminate at the edge of the contact surface, and expand in the direction of fiber; in the failure stage, sudden damage occurs suddenly under the indenter, and the fiber matrix is crushed into powder. The propagation range of the damage depends on the material properties and installation direction. Compared with T700/3234, T800/X850 has greater energy absorption before the damage. Laminates have the worst anti-intrusion ability out-of-plane in the surface fiber direction. These results increase the understanding of the out-of-plane compression damage of the composite material and provide a theoretical basis and method guidance for the control of the temporary fastening damage of the composite structures. The copying indenter designed in this paper can be used for further research on temporary fastening damage.

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Section: Resultsmentioning

confidence: 89%

Experimental study on temporary fastening damage of composite structures

Chen¹,

Lin²,

Wang

2022

Proceedings of the Institution of Mechanical Engineers, Part B:

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“…To mitigate the interface issue, different fiber surface treatments, namely polydopamine coating [42] can be applied to UHMWPE fibers to improve the interfacial properties between such fibers and the Elium ® matrix. As the higher thickness results in a higher impact force, the results can be normalized by a thickness scaling rule to have a fair comparison among the laminates LVI characteristics [43]. Based on this rule, the force-deflection curves for laminates with different thicknesses can be fairly compared, when the forces are scaled up to power 1.5, i.e.…”

Section: The Influence Of Fiber Type and Laminates Thicknessmentioning

confidence: 99%

“…This method can be used and applied for different laminates investigated in this study. However, it should be borne in mind that the thickness scaling approach is a simplified approach to make the results comparable, and is only valid for the linear part (before the occurrence of delamination) [43].…”

Section: The Influence Of Fiber Type and Laminates Thicknessmentioning

confidence: 99%

Developing thermoplastic hybrid titanium composite laminates (HTCLS) at room temperature: Low-velocity impact analyses

Kazemi

Bodaghi

Shanmugam

et al. 2021

Composites Part A: Applied Science and Manufacturing

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“…Fotouhi et al [9] performed static indentation tests on S-glass/epoxy and carbon/epoxy composite laminates to assess the mechanical performance. The results from S-glass/epoxy composite revealed more deflection and energy absorbed before failure and Sun et al [10] tested tube structures made of aluminium, net carbon fibre reinforced plastic and the hybrid under transverse bending loads and observed that the energy absorbed by the hybrid structure was the higher.…”

Section: Introductionmentioning

confidence: 99%

The Effect of Hybridisation on Carbon and Glass Fibres Reinforced Composites Under Quasi-Static Loading

David-West¹

2022

JMechE

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Fibre hybridisation in composite structures is a promising strategy to control the stiffness and energy absorption characteristics. The hybrid structure could offer a better balance of appropriate mechanical properties tailored to specific application. Carbon fibre is extremely strong compared to glass fibre, and to overcome the challenges of replacing conventional materials in respect of the appropriate mechanical properties, hybridisation seems to be a good approach. In this study interlaminar hybrid composites were produced with carbon and glass fibres as reinforcement and non-hybrid samples of carbon fibre reinforcement. All the composite plates were tested under quasi-static loading and the results obtained were plotted as load – displacement graphs for loading and un-loading; the slope of the loading curve taken as estimate for the bending stiffness. The results of the laminate bending stiffnesses were 312 kN/m, 407 kN/m, 224 kN/m and 223 kN/m for the configurations [90C/0C/±45C]S, [90C/0C]2S, [90C/0G/±45CG]S and [90C/0G]2S, respectively; which showed reduction with the introduction of glass fibres. Hence, the process of hybridisation could be used to modify a couple of the characteristics of composite structures including the natural frequencies and damping properties. Micro-photograph of the damaged section revealed matrix crack and ply debonding.

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A comparative study on glass and carbon fibre reinforced laminated composites in scaled quasi-static indentation tests

Cited by 32 publications

References 21 publications

Experimental study on temporary fastening damage of composite structures

Experimental study on temporary fastening damage of composite structures

Developing thermoplastic hybrid titanium composite laminates (HTCLS) at room temperature: Low-velocity impact analyses

The Effect of Hybridisation on Carbon and Glass Fibres Reinforced Composites Under Quasi-Static Loading

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