FEATURE / ADDITIVE MANUFACTURED TOOLSET PARTS a) Top down view b) Oblique view Figure 7. 3DViz Visualization of ThermaViz data for NASA Heated Chamber. filters can be set interactively for a quick location of potential problem region on a printed part since the CAD model outline is shown together with filtered voxels (Figure 5d). Sensors and Camera Used The Keyence Laser Line Profilometer (LLP) A metrology grade inspection sensor traditionally used to inspect production components for geometric and roughness variations. The AM machine has this sensor mounted to the powder spreader stage. This allows the AM machine and the LLP to scan across the build area. Scans may be taken of the as-spread powder layer and of the as-processed layer for each layer. While producing a large dataset per build, this data collection technique adds no time to the build. The collected data can be used to identify possible areas of interest for NDE, correlated to physical phenomena and defects, and ultimately used to create closedloop process control algorithm. Basic examples of simple closed-loop control are to inspect for scraper defects which leads to powder striations detrimental to the build. Also, by inspecting each www.thermwood.com info@thermwood.com 22 | SAMPE JOURNAL | * 904 Buffaloville Rd., Dale, IN 47523 N OV E M B E R / D E C E M B E R 2 0 1 9 * 800-533-6901 w w w. s a m p e . o r ghttp://www.thermwood.com http://www.sampe.org