Title: System and method for inspecting parts using dynamic response function

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 structure, which includes a part on a build platform, 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.

Inventors:

Hartwig, Troy Juan; Brown, Benjamin Ross; Soine, David

Issue Date:

2021-07-27

Research Org.:

Kansas City Plant (KCP), Kansas City, MO (United States)

Sponsoring Org.:

USDOE

OSTI Identifier:

1840293

Patent Number(s):

11073501

Application Number:

16/577,001

Assignee:

Honeywell Federal Manufacturing & Technologies, LLC (Kansas City, MO)

Patent Classifications (CPCs):

B - PERFORMING OPERATIONS B29 - WORKING OF PLASTICS B29C - SHAPING OR JOINING OF PLASTICS

B - PERFORMING OPERATIONS B33 - ADDITIVE MANUFACTURING TECHNOLOGY B33Y - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING

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B - PERFORMING OPERATIONS B29 - WORKING OF PLASTICS B29C - SHAPING OR JOINING OF PLASTICS

B29C64/153 - using layers of powder being selectively joined, e.g. by selective laser sintering or melting
B29C64/393 - for controlling or regulating additive manufacturing processes

B - PERFORMING OPERATIONS B33 - ADDITIVE MANUFACTURING TECHNOLOGY B33Y - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING

B33Y40/00 - Auxiliary operations or equipment, e.g. for material handling

G - PHYSICS G01 - MEASURING G01N - INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES

G01N2291/014 - Resonance or resonant frequency
G01N29/043 - {in the interior, e.g. by shear waves}
G01N29/07 - by measuring propagation velocity or propagation time of acoustic waves
G01N29/11 - by measuring attenuation of acoustic waves
G01N29/12 - by measuring frequency or resonance of acoustic waves {
G01N29/2418 - {using optoacoustic interaction with the material, e.g. laser radiation, photoacoustics
G01N29/4436 - {with a reference signal

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DOE Contract Number:  

NA0000622

Resource Type:

Patent

Resource Relation:

Patent File Date: 09/20/2019

Country of Publication:

United States

Language:

English