An experimental and simulation-based analysis of resin flow front during fabrication of lightweight composite components using VARTM process

2021 ◽  
Vol 12 (2) ◽  
pp. 149
Author(s):  
Harshit K. Dave ◽  
Himanshu V. Patel
Keyword(s):  
Resin Flow ◽  
Flow Front ◽  
Simulation Based ◽  
Vartm Process

Transient Analysis of In-Plane and Through Thickness Flow During VARTM in the Presence of HPM

2014 ◽  
Author(s):  
Debabrata Adhikari ◽  
Suhasini Gururaja
Keyword(s):  
Transient Analysis ◽  
Flow Model ◽  
Resin Flow ◽  
Constant Flow ◽  
High Permeability ◽  
Coupled Flow ◽  
Resin Infusion ◽  
Plane Flow ◽  
Constant Flow Rate ◽  
Vartm Process

Modeling resin flow for a Vacuum Assisted Resin Transfer Molding (VARTM) process involves developing an approach for coupled flow-compaction, porosity-permeability, resin-cure and stress-development phenomena. In the present work, a modified transient incompressible resin flow model has been developed for VARTM without considering the constant flow rate assumption. The use of High Permeability Medium (HPM) during VARTM results in a through-thickness flow in addition to in-plane flow developing due to the pressure gradient. Results have been validated with existing literature. Fill time comparisons for with and without HPM cases have been presented. Some preliminary results of 2D plane flow have also been obtained which show promise in replicating the physics of vacuum assisted resin infusion composite manufacturing process.

Determination of the Permeability Tensor of Fibrous Reinforcements for VARTM

1999 ◽  
Author(s):  
Pavel B. Nedanov ◽  
Suresh G. Advani ◽  
Shawn W. Walsh ◽  
William O. Ballata
Keyword(s):  
Constant Pressure ◽  
Permeability Tensor ◽  
Three Dimensions ◽  
Resin Flow ◽  
Flow Front ◽  
Resin Impregnation ◽  
Permeable Media ◽  
Front Position ◽  
Transverse Permeability

Abstract VARTM and SCRIMP composite manufacturing processes use a highly permeable media to distribute the resin through the thickness of the composite. Hence, manufacturing simulations of resin flow in such processes requires reliable data for in-plane as well as transverse permeability. The goal of this study is to propose a method for simultaneous determination of the principal values of 3D-permeability tensor of fibrous reinforcements. The permeability components are calculated from experimental data, consisting of flow front position with time during resin impregnation in three dimensions from a radial source under constant pressure using the SMARTweave [Walsh (1993), Fink et al.(1995)] sensor system. Experimental results are compared with numerical simulation.

scholarly journals Modeling and Experimental Validation of the VARTM Process for Thin-Walled Preforms

Polymers ◽  
2019 ◽  
Vol 11 (12) ◽  
pp. 2003
Author(s):  
Da Wu ◽  
Ragnar Larsson ◽  
Mohammad S. Rouhi
Keyword(s):  
Shell Model ◽  
Computational Efficiency ◽  
Large Scale ◽  
Strongly Coupled ◽  
Thin Walled Structures ◽  
Simulation Based ◽  
Thin Walled ◽  
High Computational Efficiency ◽  
Insight Into ◽  
Vartm Process

In this paper, recent shell model is advanced towards the calibration and validation of the Vacuum-assisted Resin Transfer Molding (VARTM) process in a novel way. The model solves the nonlinear and strongly coupled resin flow and preform deformation when the 3-D flow and stress problem is simplified to a corresponding 2-D problem. In this way, the computational efficiency is enhanced dramatically, which allows for simulations of the VARTM process of large scale thin-walled structures. The main novelty is that the assumptions of the neglected through-thickness flow and the restricted preform deformation along the normal of preform surface suffice well for the thin-walled VARTM process. The model shows excellent agreement with the VARTM process experiment. With good accuracy and high computational efficiency, the shell model provides an insight into the simulation-based optimization of the VARTM process. It can be applied to either determine locations of the gate and vents or optimize process parameters to reduce the deformation.

Behavior of resin flow during VaRTM process for FRP structure

2004 ◽  
Vol 2004.12 (0) ◽  
pp. 137-138
Author(s):  
Nozomu KAWASETSU ◽  
Kentaro SHINDO ◽  
Katsuhiko TAKITA ◽  
Eiji KATO
Keyword(s):  
Resin Flow ◽  
Vartm Process

707 Resin flow monitoring in the thickness direction in a VaRTM process

2010 ◽  
Vol 2010 (0) ◽  
pp. 424-426
Author(s):  
Ryosuke MATSUZAKI ◽  
Seiji KOBAYASHI ◽  
Akira TODOROKI ◽  
Yoshihiro MIZUTANI
Keyword(s):  
Resin Flow ◽  
Thickness Direction ◽  
Flow Monitoring ◽  
Vartm Process

A Distribution Medium Considered Resin Flow Simulation Model for Vacuum Infusion Molding Process

2013 ◽  
Vol 753-755 ◽  
pp. 221-224
Author(s):  
Rui Yang ◽  
Long Tao Li ◽  
Yan Xin Zhao
Keyword(s):  
Simulation Model ◽  
Layer Thickness ◽  
Flow Simulation ◽  
Parabolic Type ◽  
Resin Matrix ◽  
Resin Flow ◽  
Flow Front ◽  
Molding Process ◽  
Fiber Layer ◽  
Front Profile

Based on the flow characteristics of resin in fiber perform, a simulation model considering distribution medium was developed, and impregnation of fiberglass reinforced resin matrix composites was numerically simulated. The fiberglass layer thickness on VIMP microscopic impregnation was analyzed in simulation. The results show that increasing fiberglass layer thickness can reduce the flow velocity of the resin and the resin flow front profile approximates a straight line type, so the fluctuation is small, and the final product has few dry spots; reducing the glass fiber layer thickness can improve wetting speed but resin flow front profile approximates a parabolic type, so the fluctuation is large, and the final product has more dry spots, the resin flow front profile can provide guidance for prediction and optimization of the infusion process.

scholarly journals Simulation and validation of resin flow during manufacturing of composite panels containing embedded impermeable inserts with the VARTM process

2007 ◽  
Vol 28 (4) ◽  
pp. 442-450 ◽  
Author(s):  
Jeffrey M. Lawrence ◽  
Pierre Frey ◽  
Ahmad Abu Obaid ◽  
Shridhar Yarlagadda ◽  
Suresh G. Advani
Keyword(s):  
Resin Flow ◽  
Composite Panels ◽  
Simulation And Validation ◽  
Vartm Process
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