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The major problem in microwave processing is attenuation of microwave heating source. This work is investigation by simulation on the microwave energy attenuation into the long and thick parts with curve-shaped geometry. Physical properties of final products to be manufactured, in particular the mechanical properties, are directly dependent on uniform repartition of microwave source heating during the treatment. We propose Dielectric Effect of Attenuation Inversion of the Electromagnetic Waves (DEAI) as solution for uniform treatment long and thick parts with curve-shaped geometry with epoxy glass by microwave energy. This solution utilizes dielectric properties of the mold to control the microwave heat source attenuation into the composite to be treated. Electromagnetic modelling of microwave process was carried out by FEMLAB software using finite element. The results show that microwave source heating attenuation into the parts with curve-shaped geometry is important compared with parallelepiped geometry. This attenuation we can controls and inverse it in the propagation direction.

Investigation on Microwave Energy Attenuation into the Epoxy Glass Thick Parts with Curve- Shaped Geometry