Basic research on AC characteristics and film thickness measurement of wet coating film using coaxial probe method

In recent years, infrastructure structures have become aging. Maintenance work such as anti corrosion coating is being carried out. The paint quality is confirmed visually, and most of them are qualitative, relying on the intuition of skilled workers. For the measurement of wet coating film, quantification by sensor measurement is required, but contact type gauges are currently used. In this study, we report on the basic research on the wet coating film inspection method by the coaxial probe method.