Non-contact Temperature Measurement of Deposited Objects Manufactured by Directed Energy Deposition

抄録

In Directed Energy Deposition, which is one of the metal additive manufacturing methods, it is important to monitor the temperature of entire layered objects. For temperature monitoring, a non-contact measurement using a thermal imaging camera is desirable. However, it is difficult to measure the temperature of layered objects having large fluctuations in emissivity. Therefore, a method was proposed for measuring the average temperature of square areas on the surface using a single emissivity. The measurement result shows that the surface temperature of layered objects can be measured with sufficient accuracy using appropriate square areas.