Local impregnation behavior and simulation of non-crimp fabric on curved plates in vacuum assisted resin transfer molding

Geng, Yi; Jiang, Jinhua; Chen, Nanliang

doi:10.1016/j.compstruct.2018.10.054

Cited by 11 publications

(17 citation statements)

References 24 publications

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“…The other side of the tow is fixed on a sliding part (2) of the holder that slides on two rods (3) attached to the main body of the sample holder (1). Inside the sliding part, a nut ( 4) is embedded to hold the tensioning bolt (5). When turned, the tensioning bolt (5) pushes against the intermediate plate ( 6), which, in turn, compresses the springs (7).…”

Section: Tow To Tow Friction Testing Devicementioning

confidence: 99%

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Experimental investigation of vegetal and synthetic fabrics cohesion in order to prevent the tow sliding defect via frictional and pull-out test

Salem

Luycker

Delbé

et al. 2020

Composites Part A: Applied Science and Manufacturing

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Section: Tow To Tow Friction Testing Devicementioning

confidence: 99%

“…Despite its interest, the process is still prone to defects. The defects lower the mechanical properties of the finished product [5]. Some defects are due to the resin injection part of the process.…”

Section: Introductionmentioning

confidence: 99%

Experimental investigation of vegetal and synthetic fabrics cohesion in order to prevent the tow sliding defect via frictional and pull-out test

Salem

Luycker

Delbé

et al. 2020

Composites Part A: Applied Science and Manufacturing

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“…[10,11] The most commonly used numerical tools through various simulation packages are finite volume method (FVM), finite element method (FEM) and hybrid control volume finite element method (CVFEM). Moreover, the numerical tools used by researchers are specially developed simulation tools for the isothermal LCM processes such as PAM-RTM, RTMSIM, LIMS3D, LIMS, RTM-Worx, [12][13][14][15][16][17] etc.…”

Section: Introductionmentioning

confidence: 99%

“…However, the difference in peak values of cure rate between neat resin and composite panel decreases with an increase in temperature. The rate of cure at Δα peak and the corresponding cure rate time at Δα peak (t Δα peak ) is shown by a dotted line in Figure13. From Figure13, it is observed that for a given temperature, cure rate at Δα peak falls at the termination phase after peaking of neat resin cure whereas cure rate at Δα peak falls at the cure progression zone before peaking for the composite panel.…”

mentioning

confidence: 96%

Design of effective injection strategy and operable cure window for an aircraft wing flap composite part using neat resin characterization and multi‐physics process simulation

2022

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A methodology using neat resin characterization and multi‐physics process simulation was proposed to develop a resin transfer molding (RTM) process for an aircraft wing flap composite part. Initially, RTM6 resin was thermally characterized using differential scanning calorimetry and curing kinetics was modeled using Kamal and Sourour model. A multi‐physics approach was employed to simulate the RTM mold filling and curing phases. Mold filling simulations were performed to obtain an effective injection strategy for the composite part. One‐point injection port and five‐point vents were obtained as an effective injection strategy using a trial and improvement process. Curing simulations were performed on the composite part using neat resin cure kinetics and cure process windows for neat resin and composite panel were developed. Subsequently, a cure difference window was developed to investigate cure difference progression between neat resin and composite panel at the processing conditions. Finally, the kinetics of cure difference progression was modeled as a function of neat resin cure conversion to design operable cure cycles for the composite panel. The results found that the cure differences converge with the increase in applied mold temperature.

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“…It achieved reductions of nearly 66% and 15% in filling time and final degree of cure, respectively, in comparison with standard solutions. Geng et al [23] investigated the behavior of resin impregnation in curved porous plates mimicking a VARTM process. They performed an experimental study investigating the influence of curvature angles and preform layers on the advancement of the resin front line.…”

Section: Introductionmentioning

confidence: 99%

Numerical Analysis of the Influence of Empty Channels Design on Performance of Resin Flow in a Porous Plate

et al. 2020

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This numerical study aims to investigate the influence of I and T-shaped empty channels’ geometry on the filling time of resin in a rectangular porous enclosed mold, mimicking the main operating principle of a liquid resin infusion (LRI) process. Geometrical optimization was conducted with the constructal design (CD) and exhaustive search (ES) methods. The problem was subjected to two constraints (areas of porous mold and empty channels). In addition, the I and T-shaped channels were subjected to one and three degrees of freedom (DOF), respectively. Conservation equations of mass and momentum for modeling of resin/air mixture flow were numerically solved with the finite volume method (FVM). Interaction between the phases was considered with the volume of fluid method (VOF), and the effect of porous medium resistance in the resin flow was calculated with Darcy’s law. For the studied conditions, the best T-shaped configuration resulted in a filling time nearly three times lower than that for optimal I-shaped geometry, showing that the complexity of the channels benefited the performance. Moreover, the best T-shaped configurations were achieved for long single and bifurcated branches, except for configurations with skinny channels, which saw the generation of permanent voids.

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Local impregnation behavior and simulation of non-crimp fabric on curved plates in vacuum assisted resin transfer molding

Cited by 11 publications

References 24 publications

Experimental investigation of vegetal and synthetic fabrics cohesion in order to prevent the tow sliding defect via frictional and pull-out test

Experimental investigation of vegetal and synthetic fabrics cohesion in order to prevent the tow sliding defect via frictional and pull-out test

Design of effective injection strategy and operable cure window for an aircraft wing flap composite part using neat resin characterization and multi‐physics process simulation

Numerical Analysis of the Influence of Empty Channels Design on Performance of Resin Flow in a Porous Plate

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