Work Item
ASTM WK78092
New Practice for Additive Manufacturing -- Powder Bed Fusion -- Condition-defined Maintenance for Optical Systems
1. Scope
The proposed work addresses gap PC2 Process Control: Machine Calibration and Preventative Maintenance and aims to provide guidance on building a database regarding the health status of the optical system in LB-PBF machines. The work shall enable end users of LB-PBF to adapt maintenance and calibration cycles based on this database.
Keywords
Additive Manufacturing; LB-PBF; Optical Data; Optical System; Condition Monitoring; Maintenance
Rationale
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.
Work Item Status
Date Initiated: 08-23-2021
Technical Contact: Niklas Praetzsch
Item: 002
Ballot: F42 (22-11)
Status: In Balloting