Lamina properties, lay-up configurations and loading conditions for a range of fibre reinforced composite laminates

Soden, P.D.; Hinton, M.J.; Kaddour, A.S.

doi:10.1016/b978-008044475-8/50003-2

Cited by 173 publications

(156 citation statements)

References 20 publications

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“…All laminates were manufactured in autoclave by SACESA (Spain) from pre-preg of HEXCEL Composite Materials, following the normal manufacturing process and quality controls of the Aeronautical Industry. The material properties used in the analytical and numerical models were taken from data provided by the manufacturer, and from the bibliography [20,21], see Table 1. …”

Section: Methodsmentioning

confidence: 99%

Analysis of the dynamic flexural behaviour of composite beams at low temperature

Sánchez-Sáez

Barbero

2007

Composites Science and Technology

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In this study, the dynamic flexural behaviour at low temperatures of beams of three carbon/epoxy laminates is evaluated, analysing the influence of temperature on the mechanical strength, stiffness and absorbed energy until failure. Three point bending tests were per formed under dynamic conditions at three different temperatures (20°C, 60°C and 150°C), and the results were compared with those found under static conditions at the same temperatures. Both the mechanical strength and the absorbed energy decreased when the tem perature diminished in all the laminates. No significant influence of temperature was noted on the effective flexural modulus. Two ana lytical models, using the classical laminated theory and the first order shear deformation laminate theory, and a numerical model were used to analyse the experimental results of the tests. The models allowed to ensure the use of the equations, which do not consider inertia forces, to calculate the test parameters, and they provided the specimen support span to neglect shear effects. They served also to deter mine the origin of the noise present in the load measured in the dynamic tests.

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Section: Methodsmentioning

confidence: 99%

Analysis of the dynamic flexural behaviour of composite beams at low temperature

Sánchez-Sáez

Barbero

2007

Composites Science and Technology

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“…The properties of glass fibre are assumed to remain constant and independent of the temperature change with Young's modulus E = 80 GPa and Poisson's ratio ν = 0.22, the coefficient of thermal expansion α = 4.9·10 -6 /°C and the longitudinal tensile (σ T ) and compressive (σ C ) strength are 2150 and 1450 MPa, respectively. However, for the epoxy resin, thermal transition temperatures such as the glass transition temperature T g strongly affect mechanical properties [24]. In order to represent this behaviour accurately the material properties of the resin are defined as a function of temperature.…”

Section: Methodsmentioning

confidence: 99%

“…Hence, residual stress and its effect on transverse and longitudinal failure of UD composites have been investigated considering the linearelastic behaviour of the constituents. In particular, the materials used in this investigation are glass fibre and epoxy resin, whose properties are given in [24]. The properties of glass fibre are assumed to remain constant and independent of the temperature change with Young's modulus E = 80 GPa and Poisson's ratio ν = 0.22, the coefficient of thermal expansion α = 4.9·10 -6 /°C and the longitudinal tensile (σ T ) and compressive (σ C ) strength are 2150 and 1450 MPa, respectively.…”

Section: Methodsmentioning

confidence: 99%

Finite element investigations on the microstructure of fibre-reinforced composites

Maligno¹,

Warrior²,

Long³

2008

Express Polym. Lett.

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Abstract. The effect of residual stress due to the curing process on damage evolution in unidirectional (UD) fibre-reinforced polymer-matrix composites under longitudinal and transverse loading has been investigated using a three-dimensional micromechanical representative volume element (RVE) model with a hexagonal packing geometry and the finite element method. Residual stress has been determined by considering two contributions: volume shrinkage of matrix resin from the crosslink polymerization during isothermal curing and thermal contraction of both resin and fibre as a result of cooling from the curing temperature to room temperature. To examine the effect of residual stress on failure, a study based on different failure criteria and a stiffness degradation technique has been used for damage analysis of the RVE subjected to mechanical loading after curing for a range of fibre volume fractions. Predicted damage initiation and evolution are clearly influenced by the presence of residual stress.

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“…The elastic data are cited from Reference [13], tensile strength is obtained from data sheet of the fiber manufacturer, compressive strength are calculated with an empirical correction k = 0.8, and the empirical correction is determined according to the ratio of compressive strength and tensile strength of T300 fiber, the data are summarized in the World-Wide Failure Exercise [22]. …”

Section: Failure and Softening Formulation For Fibermentioning

confidence: 99%

Estimation of Lamina Stiffness and Strength of Quadriaxial Non-Crimp Fabric Composites Based on Semi-Laminar Considerations

et al. 2016

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Quadriaxial non-crimp fabric (QNCF) composites are increasingly being used as primary structural materials in aircraft and automotive applications. Predicting the mechanical properties of QNCF lamina is more complicated compared with that of unidirectional (UD) composites, because of the knitting connection of different plies. In this study, to analyze the stiffness and strength of the QNCF composites, a novel modeling strategy for the meso-scale features is presented based on the semi-laminar assumption. Following the view of the mechanical properties of single composite lamina, the complex QNCF layer is decomposed into individual plies. Three different representative unit cells along fiber direction are selected to predict the mechanical performance of QNCF, including in-plane stiffness, damage initiation, and stiffness degradation. To validate the developed modeling strategy, the predictions are compared with existing experimental results, where a good agreement is presented on the prediction of in-plane stiffness and strength. Furthermore, the effect of in-plane fiber distortion, induced by the stitching yarn on the mechanical properties, is studied.

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Lamina properties, lay-up configurations and loading conditions for a range of fibre reinforced composite laminates

Cited by 173 publications

References 20 publications

Analysis of the dynamic flexural behaviour of composite beams at low temperature

Analysis of the dynamic flexural behaviour of composite beams at low temperature

Finite element investigations on the microstructure of fibre-reinforced composites

Estimation of Lamina Stiffness and Strength of Quadriaxial Non-Crimp Fabric Composites Based on Semi-Laminar Considerations

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