Compressive damage mechanism of GFRP composites under off-axis loading: Experimental and numerical investigations

Zhou, Hongwei; Yi, Haiyang; Gui, L.L.; Dai, Guanzhong; Peng, Ruidong; Wang, H.W.; Mishnaevsky, Leon

doi:10.1016/j.compositesb.2013.06.007

Cited by 35 publications

(17 citation statements)

References 36 publications

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“…Figure 14 shows the stress-strain curves for the several simulated unit cells. 12 Comparing the numerical results with the experimental ones ( Figure 6), we can see that the results of the numerical experiments correspond with the results of the experimental observations. The peak stress for the case of vertical loading (i.e.…”

Section: Compression Damage In Gfrp: Modeling Resultssupporting

confidence: 87%

Microscale damage mechanisms and degradation of fiber-reinforced composites for wind energy applications: results of Danish–Chinese collaborative investigations

Mishnaevsky

Zhou

et al. 2013

Journal of Composite Materials

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Recent research works in the area of experimental and computational analyses of microscale mechanisms of strength, damage and degradation of glass fiber polymer composites for wind energy applications, which were carried out in the framework of a series of Sino-Danish collaborative research projects, are summarized in this article. In a series of scanning electron microscopy in situ experimental studies of composite degradation under off-axis tensile, compressive and cyclic loadings as well as three-dimensional computational experiments based on micromechanics of composites and damage mechanics, typical damage mechanisms of wind turbine blade composites were clarified. It was demonstrated that the damage mechanisms in the composites strongly depend on the orientation angle of the applied loading with the fiber direction. The matrix cracking was observed to be the main damage mechanism for tensile axial (or slightly off-axis axial) loading; for all other cases (off-axis tensile, compressive and cyclic tensile loadings), the interface debonding and shear control the damage mechanisms.

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Section: Compression Damage In Gfrp: Modeling Resultssupporting

confidence: 87%

Microscale damage mechanisms and degradation of fiber-reinforced composites for wind energy applications: results of Danish–Chinese collaborative investigations

Mishnaevsky

Zhou

et al. 2013

Journal of Composite Materials

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“…The compressive stress/strain-curves show an initially linear behaviour for the first half of the test, followed by a decreasing slope until failure, see Figure 4F. This behaviour is characteristic for fiber reinforced composites perpendicular to the fiber direction, see for example, Reference [26], due to nonlinear shear behaviour of the matrix. The compressive Young's modulus was determined as E ⊥ = 15.2 ± 1.8 GPa with an ultimate strength of σ ⊥ = 135 ± 6 MPa and a failure strain of ε ⊥ = −1.6 ± 0.6%.…”

Section: Compressive 90 • Properties Perpendicular To the Fiber Direcmentioning

confidence: 81%

Mechanical Properties of a Unidirectional Basalt-Fiber/Epoxy Composite

et al. 2020

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High-performance composites based on basalt fibers are becoming increasingly available. However, in comparison to traditional composites containing glass or carbon fibers, their mechanical properties are currently less well known. In particular, this is the case for laminates consisting of unidirectional plies of continuous basalt fibers in an epoxy polymer matrix. Here, we report a full quasi-static characterization of the properties of such a material. To this end, we investigate tension, compression, and shear specimens, cut from quality autoclave-cured basalt composites. Our findings indicate that, in terms of strength and stiffness, unidirectional basalt fiber composites are comparable to, or better than epoxy composites made from E-glass fibers. At the same time, basalt fiber composites combine low manufacturing costs with good recycling properties and are therefore well suited to a number of engineering applications.

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“…In the regions under compressive loading (the downwind side of the blade and spar) fiber crushing and shear banding can be observed. In [ 101 , 102 ], the damage mechanisms of glass fiber composites under compressive loading was studied experimentally, using SEM observations, as well as numerically. The damage mechanisms under cyclic loading (fatigue) are in many cases different from the static damage mechanisms.…”

Section: Testing Degradation and Computational Modellingmentioning

confidence: 99%

Materials for Wind Turbine Blades: An Overview

Mishnaevsky¹,

Branner²,

Petersen³

et al. 2017

Materials

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475

260

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A short overview of composite materials for wind turbine applications is presented here. Requirements toward the wind turbine materials, loads, as well as available materials are reviewed. Apart from the traditional composites for wind turbine blades (glass fibers/epoxy matrix composites), natural composites, hybrid and nanoengineered composites are discussed. Manufacturing technologies for wind turbine composites, as well their testing and modelling approaches are reviewed.

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Compressive damage mechanism of GFRP composites under off-axis loading: Experimental and numerical investigations

Cited by 35 publications

References 36 publications

Microscale damage mechanisms and degradation of fiber-reinforced composites for wind energy applications: results of Danish–Chinese collaborative investigations

Microscale damage mechanisms and degradation of fiber-reinforced composites for wind energy applications: results of Danish–Chinese collaborative investigations

Mechanical Properties of a Unidirectional Basalt-Fiber/Epoxy Composite

Materials for Wind Turbine Blades: An Overview

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