Experimental investigation of quasi-static and intermediate strain rate behaviour of polypropylene glass fibre (PPGF) woven composite

Martin, Antoine; Othman, Ramzi; Rozycki, Patrick

doi:10.1179/1743289814y.0000000110

Cited by 10 publications

(10 citation statements)

References 29 publications

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“…The crack first appears in the weakest part between coating, substrate and the interface, and then propagates fast along the yarn orientations. The effects of loading rate on most polymers may be explained by the Eyring theory of viscosity, which assumes the deformation of polymers involve the motion of a chain molecule over potential energy barriers [7,8]. When the loading rate is low, there is enough time for the material to achieve enough deformation.…”

Section: Loading Ratementioning

confidence: 99%

“…The elongation at break always decreases with loading rate increasing. Then, it is easy for the energy absorption to achieve the limit value, while the deformation cannot develop completely [7].…”

Section: Loading Ratementioning

confidence: 99%

“…As typical polymer composites, the mechanical responses of coated fabrics may be sensitive to loading rate. Unlike metals, which have been studied over a wide range of loading rates, only a limited amount of information is available about the effects of loading rate and temperature on the response of coated fabrics [6][7][8][9]. Lack of understanding the mechanical properties of membrane materials limits the development of membrane structures [10][11][12].…”

Section: Introductionmentioning

confidence: 99%

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Off-axial failure analysis of polytetrafluoroethylene-coated woven glass fibers under different loading rates

Zhang

Xue

2016

Journal of Industrial Textiles

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This paper presents the research on off-axial tensile behaviors of polytetrafluoroethylene-coated woven glass fibers under different loading rates. First, groups of off-axial tensile tests were carried out, and the corresponding failure mechanisms were analyzed. Then, the effect of loading rate on the tensile behaviors of off-axial specimens was studied. Finally, several current strength criteria were compared to predict the material failure strength under different loading rates. Results show the tensile behaviors of polytetrafluoroethylene-coated woven glass fibers are typical orthotropic. The material failure strength is strongly related with failure modes and yarn orientations. Three typical failure modes are observed in the tests, including interface failure, yarn breakage, and composite failure. The loading rate has significant effects on the material tensile strength and the elongation at break. With loading rate increasing, the tensile strength increases and the elongation at break decreases. The tensile strength shows a good linear correlation with the loading rate's logarithm. Most of current quadratic strength criteria can be used to predict the material failure strength, except for the specimens of small bias angles. This is because traditional quadratic criteria are always based on the strain energy theory of homogeneous materials, which may not reflect the failure mechanisms of coated fabrics and other important details.

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Section: Loading Ratementioning

confidence: 99%

Section: Loading Ratementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Off-axial failure analysis of polytetrafluoroethylene-coated woven glass fibers under different loading rates

Zhang

Xue

2016

Journal of Industrial Textiles

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“…On the other hand, a tensile crossbow system [15,24], sketched in Figure 2, is used for dynamic strain rates. The operating mode is similar to the compression crossbow system used in [8,9,25].…”

Section: 2mentioning

confidence: 99%

Tensile Behavior of Polyetheretherketone over a Wide Range of Strain Rates

El-Qoubaa

Othman

2015

International Journal of Polymer Science

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Polyetheretherketone (PEEK) is used in several engineering applications where it has to bear impact loads. Nevertheless, the tensile behavior has only been studied in the quasi-static range of loading rates. To address the lack of data in the impact strain rate range, the tensile mechanical behavior of PEEK is investigated at room temperature over a large range of strain rates (from 0.001 to 1000/s). The macroscopic volume change is studied under uniaxial tension using digital image correlation (DIC) method, showing a significant dilatation that reaches 16% at a logarithmic axial strain of 40%. The true stress-strain behavior is therefore established based on the measured volume change. Elsewhere, the yield stress shows a significant sensitivity to strain rate. Besides, a new constitutive equation is proposed to take into account the increase in strain rate sensitivity at high strain rates. It assumes an apparent activation volume which decreases as the strain rate increases. The new constitutive equation gives similar results when compared to the Ree-Eyring equation. However, only three material constants are to be identified and are physically interpreted.

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“…Most of the high strain-rate characterization studies are focused towards the thermosetting composites such as epoxy and polyester matrices which are reinforced mainly with carbon and glass fibers [33][34][35][36][37]. A number of studies were performed in recent years on the strain rate effect on the mechanical properties of thermoplastic composites [38][39][40][41][42][43]. Few works [44][45][46] were reported on the dynamic compressive response of polyamide composites.…”

Section: Introductionmentioning

confidence: 99%

Strain rate effect on the mechanical behavior of polyamide composites under compression loading

Massaq¹,

Rusinek²,

Klósak³

et al. 2019

Composite Structures

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This paper presents an experimental study on the effect of strain rate on the compressive behavior of polyamide composites. Contrary to thermoset woven reinforced composites, thermoplastic woven reinforced composites have always received less interest despite its excellent damage and impact resistances. In this context, this work aims to study the behavior of fiber reinforced thermoplastic composites submitted to high strain rate in compression. The tested material is a thermoplastic composite made of armor tissue of equilibrate glass fiber and the matrix is composed of Polyamide 6 (PA6/Glass). The material is prepared with the fibers woven in 0/90 direction.The compressive mechanical response of PA6/Glass composite was determined in the transverse and longitudinal fibers directions at quasi-static and high strain rates.The hydraulic machine and Split Hopkinson Pressure Bar experiments were conducted to determine the dynamic and quasi static compressive deformation and fracture of the PA6/Glass at strain rates from 10 -5 s -1 to 1 s -1 and 100 s -1 to 2500 s -1 , respectively.In this work, the main goals were to determine the strain rate effect on: elastic modulus, failure stress and failure energy as a function of the loading direction. The strain rate sensitivity of the failure stress level and failure energy were observed. In addition, the failure mechanism was characterized by examining the fracture surfaces using the scanning electron microscopy (SEM) method.In quasi-static conditions of loading, the material reached its capacity due to the formation of shear bands, that concerned all three tested compression directions. In dynamics, the failure took place by 2 shearing followed by delamination. In case of dynamic loading in the direction perpendicular to fibers, the observations made by SEM showed that the failure of the composite had a fragile nature.

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Experimental investigation of quasi-static and intermediate strain rate behaviour of polypropylene glass fibre (PPGF) woven composite

Cited by 10 publications

References 29 publications

Off-axial failure analysis of polytetrafluoroethylene-coated woven glass fibers under different loading rates

Off-axial failure analysis of polytetrafluoroethylene-coated woven glass fibers under different loading rates

Tensile Behavior of Polyetheretherketone over a Wide Range of Strain Rates

Strain rate effect on the mechanical behavior of polyamide composites under compression loading

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