Defect detection by multi-axis infrared process monitoring of laser beam directed energy deposition.

ABSTRACT: Laser beam directed energy deposition (DED-LB) is an attractive additive manufacturing technique to produce versatile and complex 3D structures on demand, apply a cladding, or repair local defects. However, the quality of manufactured parts is difficult to assess by inspection prior to completion, and parts must be extensively inspected post-production to ensure conformance. Consequently, critical defects occurring during the build go undetected. In this work, a new monitoring system combining three infrared cameras along different optical axes capable of monitoring melt pool geometry and vertical displacement throughout deposition is reported. By combining multiple sensor data, an automated algorithm is developed which is capable of identifying the formation of structural features and def

SUBMITTER: Herzog T 

PROVIDER: S-EPMC10869730 | biostudies-literature | 2024 Feb

REPOSITORIES: biostudies-literature