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There are many documents that describe analysis and testing methods for polymer materials, but when actually measuring and analyzing data while referring to them, it is common to have doubts or concerns about interpretations, as well as worries about inadvertently making mistakes. This course addresses such situations by summarizing insights gained by the instructor through practical experience in analysis and physical property evaluation, focusing on points of caution and common misunderstandings.

Due to the high dv/dt and high frequency of inverter-driven systems, unprecedented electrical stress is being applied to motor insulation. This presentation will discuss the prediction of partial discharge inception voltage, evaluation techniques for insulation material properties, and the various characteristics and material design/exploration techniques of functional and nanocomposite materials, starting from the phenomena of partial discharge and charge transport in insulation materials. Furthermore, with next-generation electric mobility, including aircraft, in mind, the latest trends and future prospects of partial discharge diagnosis using AI will be introduced.