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Title

SIMULATION OF PULTRUSION MANUFACTURING PROCESS OF GLASS/POLYESTER COMPOSITES

Pages

 Start Page 323 | End Page 333

Abstract

 Present research involves the complete SIMULATION of PULTRUSION manufactur-ing process of GLASS/POLYESTER COMPOSITEs. For that purpose, the curing process is divided to two liquid and gel-solid phases. The physical charac-teristics of the RESIN consist of specific heat, viscosity and coefficient of heat transfer changes with variations of temperature and increasing the degree of curing process (a).In each of the two liquid and gel-solid phases, some of these parameters play an important role in the heat transfer and consequently in the SIMULATION results. The released heat during the RESIN curing process is another important parameter. This parameter depends on the absolute temperature of the RESIN and accelerates the RESIN curing process. The most important parameter in SIMULATION of the RESIN curing process is the degree of cure of the RESIN, which is used in calculation of the viscosity of the RESIN in this process and also helps in indicating the end of the curing process. The physical properties of fibers do not change during the curing process, while they affect the heat transfer of the RESIN and duration of the curing process. Therefore, instead of modeling the fibers and the RESIN, an equivalent material is introduced which demonstrates the behavior of fibers and the RESIN during the curing process.

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