A STUDY OF THE STEADY THICKNESS BY THE VACUUM ASSISTED RESIN INFUSION PROCESS AND THE VACUUM KEEPING TIME

Abstract

Abstract: The non-contact electric eddy current displacement sensor system was applied to real-time monitoring of the preform thickness change throughout the vacuum assisted resin infusion (VARI) infusion process. In the other same condition, the influence of the viscosity of resin, filling distance, layer numbers and the permeability on minimum vacuum time to get the steady preform thickness was investigated. The results show that, as the resin overflowed the mould and the resin inlet was closed, continued vacuumed time has an important influence on the thickness/fiber volume fraction, and is beneficial to the decrease of the thickness gradient along the direction of the resin flowing. The effect of the viscosity of resin has the primary influence on the minimum vacuum time for the steady thickness. The higher the viscosity, the longer vacuum time. The filling distance, layer numbers and the permeability has little influence.

Key words: composites, vacuum assisted resin infusion (VARI), thickness, fiber volume fraction, vacuum time

CLC Number:

TB332

ZHUANG Heng-fei, PAN Li-jian, LIU Wei-ping, TENG Cui-qing. A STUDY OF THE STEADY THICKNESS BY THE VACUUM ASSISTED RESIN INFUSION PROCESS AND THE VACUUM KEEPING TIME[J]. COMPOSITES SCIENCE AND ENGINEERING, 2015, 0(2): 5-10.

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