Temperature Distribution Measurement and Visualization of High Viscosity Polycarbonate during Its Phase Transitional Flow Using Electrical Capacitance Tomography

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  • BASARIO Kristian Gunayan
    Department of Mechanical Engineering, Graduate School of Science and Technology, (Doctor's Course), Nihon University
  • TAKEI Masahiro
    Division of Artificial System Science, Graduate School of Engineering, Nishi Chiba Campus, Chiba University

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This work presents the performance of the Electrical Capacitance Tomography (ECT) and its application in measuring temperature distribution over high viscosity during phase transition of Polycarbonate resins (PC). ECT is designed to investigate measures and visualize inner process in a non-invasive and non-intrusive way. Its main idea is collecting the cross section images within the enclosed area based on the capacitance measurement in which out of it the relative permittivity values are obtained. The polycarbonate resins were placed inside the ceramic container with 12-electrode sensors arranged equidistantly around the periphery of the container while the other ends are connected to ECT. Heat is evenly supplied with a specific period of time. The behavior of relative permittivity on the polycarbonate material due to heat effect is studied. Graphs are presented that depict the thermal characteristics and relative permittivity of the resins during phase change and thus found out that the temperature is a function of relative permittivity. The calculated value is the amount of heat penetrated that causes physical changes and the reconstructed images display the level of heat intensity occurs to the resins. The ECT can be used as a new technique in measuring temperature distribution.

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