Stochastic Resin Injection Simulation of the High-Pressure Resin Transfer Molding for an Automobile Floor Using Adapted Polynomial Chaos Expansions

2020 ◽  
Author(s):  
GURPINDER DHALIWAL ◽  
VENKAT AITHARAJU ◽  
ROGER G. GHANEM
Keyword(s):  
High Pressure ◽  
Polynomial Chaos ◽  
Resin Transfer Molding ◽  
Transfer Molding ◽  
Resin Injection ◽  
Injection Simulation ◽  
Polynomial Chaos Expansions

Using Computer Simulation as a Process Design Tool for Resin Injection Pultrusion (RIP)

2000 ◽  
Author(s):  
Zhongman Ding ◽  
Shoujie Li ◽  
L. James Lee ◽  
Herbert Engelen
Keyword(s):  
Modeling And Simulation ◽  
Process Design ◽  
Resin Transfer Molding ◽  
Transfer Molding ◽  
Pultrusion Process ◽  
Rtm Process ◽  
Resin Impregnation ◽  
Heating Section ◽  
Resin Injection ◽  
Resin Injection Pultrusion

Abstract Resin Injection Pultrusion (RIP) is a new composite manufacturing process, which combines the advantages of the conventional pultrusion process and the Resin Transfer Molding (RTM) process. It is sometimes referred to the Continuous Resin Transfer Molding (C-RTM) process. The RIP process differs from the conventional pultrusion process in that the resin is injected into an injection-die (instead of being placed in an open bath) in order to eliminate the emission of volatile organic compounds (styrene) (VOC) during processing. Based on the modeling and simulation of resin/fiber “pultrudability”, resin flow, and heat transfer and curing, a computer aided engineering tool has been developed for the purpose of process design. In this study, the fiber stack permeability and compressibility are measured and modeled, and the resin impregnation pattern and pressure distribution inside the fiber stack are obtained using numerical simulation. Conversion profiles in die heating section of the pultrusion die can also be obtained using the simulation tool. The correlation between the degree-of-cure profiles and the occurrence of blisters in the pultruded composite parts is discussed. Pulling force modeling and analysis are carried out to identify the effect on composite quality due to interface friction between the die surface and the moving resin/fiber mixture. Experimental data are used to verify the modeling and simulation results.

Forming characteristics during the high-pressure resin transfer molding process for CFRP

2018 ◽  
Vol 28 (4) ◽  
pp. 365-382 ◽  
Author(s):  
Beom Jeong Han ◽  
Yong Chai Jeong ◽  
Churl Min Kim ◽  
Roh Won Kim ◽  
Myungchang Kang
Keyword(s):  
High Pressure ◽  
Resin Transfer Molding ◽  
Molding Process ◽  
Transfer Molding ◽  
Forming Characteristics

scholarly journals A Study on Slip Behavior of Fiber Preform by High Speed Resin Flow in High Pressure Resin Transfer Molding

2014 ◽  
Vol 27 (1) ◽  
pp. 31-36 ◽  
Author(s):  
Jong-Moo Ahn ◽  
Dong-Gi Seong ◽  
Won-Oh Lee ◽  
Moon-Kwang Um ◽  
Jin-Ho Choi
Keyword(s):  
High Pressure ◽  
High Speed ◽  
Resin Transfer Molding ◽  
Resin Flow ◽  
Fiber Preform ◽  
Transfer Molding

scholarly journals Embedded Based Real-Time Monitoring in the High-Pressure Resin Transfer Molding Process for CFRP

2019 ◽  
Vol 9 (9) ◽  
pp. 1795 ◽  
Author(s):  
Kim ◽  
Kim ◽  
Hwang ◽  
Kim
Keyword(s):  
High Pressure ◽  
Real Time ◽  
Process Monitoring ◽  
High Speed ◽  
Resin Transfer Molding ◽  
Time Signal ◽  
Process Variables ◽  
Molding Process ◽  
Transfer Molding ◽  
Rtm Process

Carbon Fiber Reinforced Plastics (CFRP) is a material developed for its high strength and light weight in a broad variety of industries including aerospace, automotive, and leisure. Due to the rapid molding cycle time, high-pressure resin transfer molding (HP-RTM) processes are prone to molding defects and susceptible to various process variables such as the resin injection rate, pressure and temperature in the mold, vacuum, end-gap, pressing force, and binder. In recent years, process monitoring technology with various sensors has been applied to stabilize the HP-RTM process and control process variables. The field-programmable gate array (FPGA) based embedded monitoring system proposed in this study enabled high-speed real-time signal processing with multiple sensors, namely pressure, temperature, and linear variable differential transformer (LVDT), and proved feasibility in the field. In the HP-RTM process, the impregnation and curing of the resin were predicted from the cavity pressure and temperature variations during the injection and curing stages. In addition, the thickness of the CFRP specimen was deduced from the change in the end-gap through the detection of the LVDT signal. Therefore, the causes of molding defects were analyzed through process monitoring and the influence of molding defects on the molding quality of CFRP was investigated.

scholarly journals EVo: Net Shape RTM Production Line

2016 ◽  
Vol 2 ◽  
Author(s):  
Sven Torstrick ◽  
Felix Kruse ◽  
Martin Wiedemann
Keyword(s):  
Production Technology ◽  
Production Line ◽  
Resin Transfer Molding ◽  
Hot Forming ◽  
Transfer Molding ◽  
Resin Injection ◽  
Research Platform ◽  
Technology Demonstration ◽  
German Aerospace

EVo research platform is operated by the Center for Lightweight-Production-Technology of the German Aerospace Center in Stade. Its objective is technology demonstration of a fully automated RTM (Resin Transfer Molding) production line for composite parts in large quantities. Process steps include cutting and ply handling, draping, stacking, hot-forming, preform-trimming to net shape, resin injection, curing and demolding.

Compression Resin Transfer Molding Using Inflatable Seals

2021 ◽  
Vol 900 ◽  
pp. 3-8
Author(s):  
Ahmed Ouezgan ◽  
Said Adima ◽  
Aziz Maziri ◽  
El Hassan Mallil ◽  
Jamal Echaabi
Keyword(s):  
Resin Transfer Molding ◽  
Mold Cavity ◽  
Liquid Composite Molding ◽  
Transfer Molding ◽  
Resin Injection ◽  
New Variant ◽  
Filling Time ◽  
Composite Molding ◽  
Fiber Reinforcements ◽  
Compression Resin Transfer Molding

Compression resin transfer molding using inflatable seals is a new variant of LCM (“Liquid composite molding”) processes, which uses the inflatable seals to compress the fiber reinforcements and drive the resin to impregnate the fabric preform, resulting to fill the entire mold cavity. During resin injection, the preform is relaxed. Consequently, the resin enters easily and quickly into the mold cavity. After, the necessary resin is injected into the mold cavity, the compression stage takes place, in a stepwise manner, by swelling the inflatable seals. The objective of this paper is to present this new process and study the effect of the number of inflatable seals on the filling time.

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