Sensitivity analysis on resin transfer molding processes with edge effect and curing reaction characteristics

Ding, Yanyu; Jia, Yuxi

doi:10.1002/pc.23110

Cited by 6 publications

(3 citation statements)

References 28 publications

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“…This results in a curvy flow front rather than ideal straight line. Some researchers have focused on the effect of the mold shape on resin flow which can be found in Ding and Jia 18 and Bickerton et al 19…”

Section: Laminate Preparationmentioning

confidence: 99%

Study of resin flow in carbon fiber reinforced polymer composites by means of pressure sensors

Moghaddam

Salas

Ersöz

et al. 2017

Journal of Composite Materials

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This paper presents an evaluation of resin flow in carbon fiber reinforced polymer by means of small embedded pressure sensors. High-quality carbon fiber reinforced polymer parts require entire impregnation of fibers with resin before resin curing starts. Small piezo-resistive pressure sensors are used to measure the vacuum hold and to track resin flow and pressure elevation inside the composite part. The sensors are placed at different locations in the fiber stacks. Real-time pressure changes are obtained inside the laminate during infusion. To reduce the size of the embedded sensing element, the sensor dies are flip-chipped on a thin printed circuit board. The two component thermoset resin (RIM 035 c) and uni-directional carbon fiber with the alignment of 30° are used in a complex-shaped mold. The result shows that the flip-chipped piezo-resistive pressure sensors can be used in conductive fibers to monitor resin arrival and pressure development in vacuum assisted resin transfer molding infusion processes. The sensors are supplied by a constant current source to compensate the sensitivity reduction if the temperature changes in the curing process.

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Section: Laminate Preparationmentioning

confidence: 99%

Study of resin flow in carbon fiber reinforced polymer composites by means of pressure sensors

Moghaddam

Salas

Ersöz

et al. 2017

Journal of Composite Materials

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“…proposed a simplified resin model in RTM process. Ding and Jia proposed a mathematical model of nonisothermal RTM with sensitivity analysis. García‐Martínez et al .…”

Section: Introductionmentioning

confidence: 99%

Nonisothermal simulation on pressure during resin transfer molding

Yang

Xiang

et al. 2019

J of Applied Polymer Sci

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High speed injection has been widely used in resin transfer molding (RTM), which improves manufacturing efficiency. This sometimes leads to excessive pressure within the mold, resulting in fiber destruction and mold deformation. Heating the mold and injection resin reduces the viscosity of resin, leading to influence on mold internal pressure. Selection of optimal mold and injection temperature for effective reduction of mold internal pressure has become a source of concern in the polymer industry. This article presents an outlook relationship between mold temperature, injection temperature, and mold internal pressure. It also showcases a temperature selection method angle to addressing this issue. The “FLUENT” software has been secondarily developed that gives an insight in using the three‐dimensional nonisothermal RTM simulation. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 47492.

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“…In the RTM process, heating mold and resin can effectively reduce resin viscosity, thereby reducing mold pressure and improving injection efficiency . However, the resin is obviously affected by temperature . If temperature is too high, resin viscosity may increase sharply and cured prematurely, which will lead to the failure of the filling process.…”

Section: Introductionmentioning

confidence: 99%

Optimization method to select temperature based on chemorheological and exothermal reaction of RTM

Yang

Liu

2019

J of Applied Polymer Sci

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Heating mold and resin have been widely used in resin transfer molding (RTM) to improve injection and manufacturing efficiency. The unreasonable mold/resin temperatures sometimes lead to excessive viscosity of resin and premature curing, which will result in failure of the filling process. Selection of optimal mold and resin temperature has become a source of concern in the polymer industry. This article presents an optimization method to select mold and injection resin temperatures by using numerical simulation based on chemorheological and exothermal reaction of the RTM process. The results show that the optimization method has high computational efficiency for three-dimensional parts with different shapes. The selected mold/resin temperature ensures the smooth filling process, which provides a powerful tool for parameter design in polymer industry.

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Sensitivity analysis on resin transfer molding processes with edge effect and curing reaction characteristics

Cited by 6 publications

References 28 publications

Study of resin flow in carbon fiber reinforced polymer composites by means of pressure sensors

Study of resin flow in carbon fiber reinforced polymer composites by means of pressure sensors

Nonisothermal simulation on pressure during resin transfer molding

Optimization method to select temperature based on chemorheological and exothermal reaction of RTM

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