US 11,654,635 B2
Enhanced non-destructive testing in directed energy material processing
Scott N. Schiffres, Vestal, NY (US); Matthias Daeumer, Pleasanton, CA (US); Jacob C. Simmons, Copeke, NY (US); and Arad Azizi, Karaj (IR)
Assigned to The Research Foundation for SUNY, Binghamton, NY (US)
Filed by The Research Foundation for the State University of New York, Binghamton, NY (US)
Filed on Apr. 17, 2020, as Appl. No. 16/852,290.
Claims priority of provisional application 62/836,064, filed on Apr. 18, 2019.
Prior Publication US 2020/0333295 A1, Oct. 22, 2020
Int. Cl. G01N 29/04 (2006.01); G01N 29/44 (2006.01); G01N 29/34 (2006.01); B22F 3/105 (2006.01); B29C 64/393 (2017.01); B29C 64/153 (2017.01); G06N 20/00 (2019.01); B22F 10/20 (2021.01); G01N 29/24 (2006.01); G01N 29/46 (2006.01); G01N 21/17 (2006.01); B33Y 50/02 (2015.01); B33Y 10/00 (2015.01); B22F 10/30 (2021.01); G01N 25/18 (2006.01)
CPC G01N 29/041 (2013.01) [B22F 10/20 (2021.01); B29C 64/153 (2017.08); B29C 64/393 (2017.08); G01N 21/1717 (2013.01); G01N 29/2418 (2013.01); G01N 29/346 (2013.01); G01N 29/4409 (2013.01); G01N 29/46 (2013.01); G06N 20/00 (2019.01); B22F 10/30 (2021.01); B33Y 10/00 (2014.12); B33Y 50/02 (2014.12); G01N 25/18 (2013.01); G01N 2021/1731 (2013.01)] 22 Claims
OG exemplary drawing
 
1. A method for measuring characteristics, comprising:
modulating an energy output of a directed energy source with at least two temporal components, a manufacturing temporal component adapted to cause fusion of an additive manufacturing material comprising a powder, and an interrogation temporal component adapted to interrogate a characteristic of the additive manufacturing material without causing the fusion of the powder, the energy output being incident on (a) an object undergoing additive manufacturing or (b) the additive manufacturing material;
directing the energy output of the directed energy source on the powder under non-fusion conditions;
measuring temporal characteristics, dependent on at least the interrogation temporal component modulation of the energy output, of a response of at least the powder; and
analyzing the measured temporal characteristics to predict presence of a manufacturing defect in the object undergoing additive manufacturing, during the additive manufacturing to determine at least one of: (a) a fitness of the powder, (b) an authenticity of the powder, (c) a recycling characteristic of the powder, or (d) an optimal processing condition for fusion of the powder, based on the measured temporal characteristics.