|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||Additive Manufacturing: Building the Pathway towards Process and Material Qualification
||In-process Monitoring of Cross Contamination in Laser Powder Bed Fusion Additive Manufacturing
||Mahdi Jamshidinia, Paul Boulware, Jacob Marchal, Heimdall Mendoza, Lance Cronley, Scott Newhouse
|On-Site Speaker (Planned)
Cross contamination in laser powder bed fusion (L-PBF) additive manufacturing (AM) could result in the formation of flaws, and consequently lower the mechanical performance of a component. In this study, the in-process monitoring and detection of cross contamination was investigated in L-PBF process, also known as direct metal laser sintering (DMLS). A setup was designed and fabricated at EWI, where contaminant materials could be introduced on the powder bed without pausing the fabrication process or breaking the chamber environment. Tungsten was used as the contaminant material, in the matrix of Inconel 625. Six levels of contamination were calibrated, and introduced in two stationary and mobile modes. Photodetector, spectrometer, and optical camera were used for the data acquisition. One of the sensors showed the most promising results for one of the materials. X-ray computed tomography (CT) and optical microscope were used to validate data collected by the sensors.
||Planned: Supplemental Proceedings volume