Optical systems of LB-PBF machines are sensitive towards contamination caused by process by-products or damage due to improper handling. Currently, no sensors are integrated in LB-PBF machines to monitor the condition of these optical systems. Thus, many influence-effect relationships between the health condition of the optical system and the LB-PBF process are unknown. As a result of the lack of data, OEMs are providing conservative specifications regarding maintenance and calibration cycles of optical systems. These predetermined maintenance strategies lead to machine downtimes at high costs. This work addresses the integration of imaging sensor technology for monitoring the condition of optical systems in LB-PBF machines. Based on the data acquired with this sensor technology, maintenance cycles can be determined based on the real system condition.
The title and scope are in draft form and are under development within this ASTM Committee.