Development of a viscoelastic filament-winding process model

Kokan, David; Gramoll, Kurt

doi:10.2514/6.1996-1524

Cited by 6 publications

(2 citation statements)

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“…Their work considered the effect of resin curing/gelation; the effects of resin mixing between adjacent layers and modified stiffness formulation. Theoretical methods were also developed for the warpage of composite cylinder and the design methodologies [8,9]. Cai et al [10] developed a fiber motion model that combined Darcy's flow and nonlinear spring compaction.…”

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confidence: 99%

Consolidation and Warpage Deformation Finite Element Analysis of Filament Wound Tubes

Dong

Chen

2009

Appl Compos Mater

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This paper presents a process model for simulating the manufacturing process of prepreg filament wound composite tubes developed based on the finite element analysis. The model relates the process variables, such as degree of cure, viscosity, material property and temperature etc., to the parameters characterizing (residual stresses, warpage deformation) the composite tube and the mandrel. From the simulating results, several important trends in both the data and model are observed (1) Low temperature will go with low reaction rate and the reaction starts under low temperature will later compared with high temperature; (2) The results using CHILE model after demolding will smaller than the one using linear elasticity which assumes a stress-free prior to cool-down. After the mandrel (mold) is removed, some residual stresses, especially hoop stress will be released. (3) Remarkable stress concentration appeared in the transition zone between the boss and cylinder. In order to prevent the structural failure due to interlaminar shear or delamination, both the outer surface of the cylinder and the inner of the boss should have the same ply orientation angle.

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confidence: 99%

Consolidation and Warpage Deformation Finite Element Analysis of Filament Wound Tubes

Dong

Chen

2009

Appl Compos Mater

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“…If wrongly matched, even one of the factors, causes the decrease in composite properties. Relatively large impact on the quality of obtained composites has the technology of their production [9,11,13]. It has been proved that in the winding technology [11] wrongly matched tension force causes bad fiber supersaturation, which in turn leads to appearance of flaws like voids or discontinuities.…”

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Ultrasonic and thermal testing as a diagnostic tool for the evaluation of cumulative discontinuities of the polyester – glass pipe structure

Szymiczek¹

2016

EiN

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Science and Technology article citation info:(*) Tekst artykułu w polskiej wersji językowej dostępny w elektronicznym wydaniu kwartalnika na stronie www.ein.org.pl IntroductionThe wide spectrum of applications with reference to polymer composites causes that they are exposed to many degradation factors which have significant impact on their functional properties. These are both environmental factors (e.g temperature, microorganisms or UV radiation) [1,2,5,6,8,10,12] and fatigue ones (e.g. the value of tensions, frequency) [4,18,19]. Synergism of the phenomena triggered by these factors leads to gradual material degradation, which is particularly important in the case of polymer material [18,22].Properties of the polymer constructional composites, including glass-polyester ones depend, among others, on characteristics of input materials (reinforcements, matrixes), their mutual, adhesive connection and the technology of production. If wrongly matched, even one of the factors, causes the decrease in composite properties. Relatively large impact on the quality of obtained composites has the technology of their production [9,11,13]. It has been proved that in the winding technology [11] wrongly matched tension force causes bad fiber supersaturation, which in turn leads to appearance of flaws like voids or discontinuities. Małgorzata SzyMiczekUltrasonic and thermal testing as a diagnostic tool for the evalUation of cUmUlative discontinUities of the polyester-glass pipes strUctUre Badania Ultradźwiękowe i termowizyjne jako narzędzie diagnostycznej oceny kUmUlacji nieciągłości strUktUry rUr poliestrowo-szklanych* Identification of changes appearing in composites has been widely researched. Studies of epoxy-carbon composite structure conducted by Tarlej [18] allowed to define subsequent stages, from cracks individual fibres, through micro-cracks matrix, breaking the adhesive bonds up to delamination. These are, first of all, the effects of composite fatigue degradation. Particularly importance for the observed degradation processes is the heat, which, according to the Arrhenius law [10], accelerates to large extent the rate of reaction. Combination of thermal effect with e.g. UV radiation or water, results in, among others, the release of free radicals or hydrolysis reaction. Water absorption, which indirectly allows the evaluation of degradation level, is determined by material, exploitation temperature and the working environment [5,6,15]. The evaluation of the degradation level with reference to composite materials makes the basis to assess the usefulness of given construction for exploitation. The methods described in scientific works [2,12,18,19] cause the failure of the construction which is costly and may prove unjustified. Constant monitoring of the impact of degradation processes on every stage of their use, up to its failures, makes it possible to predict the time of construction safe usefulness. Such observation is possible thanks to non-destructive research methods e.g. ultrasonic, thermovision and radiograp...

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3.21 Filament Winding Applications

Henriquez

Mertiny

2018

Comprehensive Composite Materials II

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Development of a viscoelastic filament-winding process model

Cited by 6 publications

References 4 publications

Consolidation and Warpage Deformation Finite Element Analysis of Filament Wound Tubes

Consolidation and Warpage Deformation Finite Element Analysis of Filament Wound Tubes

Ultrasonic and thermal testing as a diagnostic tool for the evaluation of cumulative discontinuities of the polyester – glass pipe structure

3.21 Filament Winding Applications

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