Numerical simulation of thickness variation effect on resin transfer molding process

2011 ◽  
Vol 33 (1) ◽  
pp. 10-21 ◽  
Author(s):  
A. Saad ◽  
A. Echchelh ◽  
M. Hattabi ◽  
M. El Ganaoui
Keyword(s):  
Numerical Simulation ◽  
Resin Transfer Molding ◽  
Thickness Variation ◽  
Molding Process ◽  
Transfer Molding

Optimization of the cycle time in resin transfer molding process by numerical simulation

2012 ◽  
Vol 31 (20) ◽  
pp. 1388-1399 ◽  
Author(s):  
Aouatif Saad ◽  
Adil Echchelh ◽  
Mohamed Hattabi ◽  
Mohammed El Ganaoui
Keyword(s):  
Numerical Simulation ◽  
Cycle Time ◽  
Resin Transfer Molding ◽  
Molding Process ◽  
Transfer Molding

Resin transfer molding process optimization using numerical simulation and design of experiments approach

2003 ◽  
Vol 24 (1) ◽  
pp. 1-12 ◽  
Author(s):  
Jihua Gou ◽  
Chuck Zhang ◽  
Zhiyong Liang ◽  
Ben Wang ◽  
James Simpson
Keyword(s):  
Numerical Simulation ◽  
Design Of Experiments ◽  
Process Optimization ◽  
Resin Transfer Molding ◽  
Molding Process ◽  
Transfer Molding

Numerical study of filling strategies in vacuum assisted resin transfer molding process

2015 ◽  
Vol 35 (5) ◽  
pp. 493-501 ◽  
Author(s):  
Chih-Yuan Chang
Keyword(s):  
Numerical Study ◽  
Resin Transfer Molding ◽  
Thickness Variation ◽  
Filling Process ◽  
Molding Process ◽  
Resin Infusion ◽  
Numerical Work ◽  
Transfer Molding ◽  
Practical Standpoint ◽  
Post Infusion

Abstract During the filling process of vacuum assisted resin transfer molding (VARTM), the infusion pressure gradient causes the resin flow and preform thickness variation. Even after the resin infusion discontinues, the resin keeps on flowing until the unnecessary resin is removed. In this study, a one-dimensional flow model coupled to the preform deformation is numerically analyzed to assess the influences of various processing scenarios on the infusion and post-infusion stages. The numerical model is implemented using a finite difference method. Results show that two strategies effectively reduce the filling process. One is to infuse less excess resin and the other is to turn the inlet into the additional vent. For a typical process using a one-sided vent, the theoretically optimum scenario is to infuse the exact required resin volume into the preform. From a practical standpoint, excess resin infusion is inevitable and a robust scenario is proposed by integrating the concept of fully filled preform and two strategies. Additional cases are performed using a vacuum assisted compression RTM (VACRTM) process for comparison purposes. Through the numerical work, a tool for optimization of the VARTM process is provided to reduce the filling process, resin waste and variability in the final composite part.

scholarly journals A Conceptional Approach of Resin-Transfer-Molding to Rosin-Sourced Epoxy Matrix Green Composites

Aerospace ◽  
2020 ◽  
Vol 8 (1) ◽  
pp. 5
Author(s):  
Sicong Yu ◽  
Xufeng Zhang ◽  
Xiaoling Liu ◽  
Chris Rudd ◽  
Xiaosu Yi
Keyword(s):  
Composite Laminates ◽  
Resin Transfer Molding ◽  
High Viscosity ◽  
Ramie Fiber ◽  
Liquid Composite Molding ◽  
Curing Agent ◽  
Molding Process ◽  
Transfer Molding ◽  
Low Viscosity ◽  
Composite Molding

In this concept-proof study, a preform-based RTM (Resin Transfer Molding) process is presented that is characterized by first pre-loading the solid curing agent onto the preform, and then injecting the liquid nonreactive resin with an intrinsically low viscosity into the mold to infiltrate and wet the pre-loaded preform. The separation of resin and hardener helped to process inherently high viscosity resins in a convenient way. Rosin-sourced, anhydrite-cured epoxies that would normally be regarded as unsuited to liquid composite molding, were thus processed. Rheological tests revealed that by separating the anhydrite curing agent from a formulated RTM resin system, the remaining epoxy liquid had its flowtime extended. C-scan and glass transition temperature tests showed that the preform pre-loaded with anhydrite was fully infiltrated and wetted by the liquid epoxy, and the two components were diffused and dissolved with each other, and finally, well reacted and cured. Composite laminates made via this approach exhibited roughly comparable quality and mechanical properties with prepreg controls via autoclave or compression molding, respectively. These findings were verified for both carbon and ramie fiber composites.

Development of resin transfer molding process using scaling down strategy

2013 ◽  
Vol 35 (9) ◽  
pp. 1683-1689 ◽  
Author(s):  
Raghu Raja Pandiyan Kuppusamy ◽  
Swati Neogi
Keyword(s):  
Resin Transfer Molding ◽  
Molding Process ◽  
Transfer Molding ◽  
Scaling Down
Sign in / Sign up

Export Citation Format

Share Document