Ben A Brown

US Patent:

20170138906, May 18, 2017

Filed:

Nov 13, 2015

Appl. No.:

14/941258

Inventors:

- KANSAS CITY MO, US
BEN BROWN - KANSAS CITY MO, US

International Classification:

G01N 29/04

Abstract:

A system and method for the non-destructive testing of additively manufactured parts. An input mechanism excites with an excitation force (e.g., a vibration) an additive manufacturing build platform on which the part is located to induce a dynamic response in the part. An output mechanism (e.g., a non-contact transducer) senses the induced dynamic response in the part. A processor determines and examines the relationship between the response and excitation to identify an indication of a defect in the part, and communicates an alert if the indication is identified. The processor may compare the phase, magnitude, coherence, or time delay of the relationship to a reference relationship and/or may compare the modal frequency or the modal damping to a reference to identify a deviation greater than a pre-established threshold.