Patent ID: 11867638
Assignee: LAWRENCE LIVERMORE NATIONAL SECURITY, LLC
Field: Measurement (Instruments)
Classification: CPC B  G  Y | IPC B  G

Claim 15:
16. A method for detecting anomalies in additively manufactured microlattice parts involving struts, the method comprising:
generating an optical beam along an axis for creating a melt pool in a layer of feedstock material being selectively fused to make a part in an additive manufacturing operation;
detecting a thermal signal reflected from the melt pool back coaxially along the axis, the thermal signal forming a real time indication of a temperature of the feedstock material at a known location on a layer of the feedstock material while the feedstock material is forming the melt pool and being fused at the known location by the optical beam;
determining an average intensity of the thermal signal over a selected time period, the selected time period depending on a size of a strut being created; and
using the average intensity to determine make a statistical prediction, in situ while the melt pool is being formed, if an anomaly exists at the known location.