US 11,669,959 B1
Automated analysis of lattice structures using computed tomography
Bryan E. Schiefelbein, Kansas City, MO (US); and Christopher Alan Griffiths, Kansas City, MO (US)
Assigned to Honeywell Federal Manufacturing & Technologies, LLC, Kansas City, MO (US)
Filed by Honeywell Federal Manufacturing & Technologies, LLC, Kansas City, MO (US)
Filed on Apr. 14, 2022, as Appl. No. 17/720,875.
Int. Cl. G06T 7/00 (2017.01); G06T 3/40 (2006.01)
CPC G06T 7/001 (2013.01) [G06T 3/4038 (2013.01); G06T 2200/24 (2013.01); G06T 2207/10081 (2013.01); G06T 2207/20044 (2013.01); G06T 2207/20092 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method for evaluating a lattice structure, the method comprising:
receiving a set of computed tomography data including a volumetric representation of the lattice structure;
applying a filter to the set of computed tomography data to identify a plurality of nodes within the lattice structure;
applying a three-dimensional path traversal from a node of the plurality of nodes to identify a plurality of struts within the lattice structure from the set of computed tomography data;
comparing each strut of the plurality of struts from the set of computed tomography data to a respective strut of a plurality of struts identified within a predefined mesh for the lattice structure to identify one or more defective struts;
extracting one or more slices from the set of computed tomography data based at least in part on the three-dimensional path traversal;
comparing an actual cross-section of the one or more extracted slices to a nominal cross-section from the predefined mesh to determine one or more inconsistencies between the lattice structure and the predefined mesh; and
identifying one or more defects in the lattice structure based on the one or more inconsistencies and the one or more defective struts.