US 12,228,548 B2
Coating inspection using steady-state excitation
Erica Marie Jacobson, Los Alamos, NM (US); Ian Thomas Cummings, Los Alamos, NM (US); Eric Brian Flynn, Santa Fe, NM (US); Adam Joseph Wachtor, Los Alamos, NM (US); Benjamin M Chaloner-Gill, Alameda, CA (US); Brock Genter, San Ramon, CA (US); Martin Quintero, Houston, TX (US); and Ryan S. Sanders, Helena, MT (US)
Assigned to Chevron U.S.A. Inc., San Ramon, CA (US); and Triad National Security, LLC, Los Alamos, NM (US)
Filed by Chevron U.S.A. Inc., San Ramon, CA (US); and Triad National Security, LLC, Los Alamos, NM (US)
Filed on Mar. 13, 2022, as Appl. No. 17/693,369.
Prior Publication US 2023/0288375 A1, Sep. 14, 2023
Int. Cl. G01N 29/07 (2006.01); G01N 29/44 (2006.01)
CPC G01N 29/07 (2013.01) [G01N 29/4427 (2013.01); G01N 29/4463 (2013.01); G01N 2291/011 (2013.01); G01N 2291/0237 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method for coating inspection, the method comprising:
obtaining measurement of acoustic excitation in a structure, the structure being a hollow structure to hold, carry, or transport a first thing or a support structure that provides support for a second thing, the structure including a substrate and a coating over at least a portion of the substrate;
filtering the measurement of acoustic excitation in the structure based on identification and removal of dominant modes from the measurement of acoustic excitation in the structure to remove acoustic response of the substrate from the measurement, the filtered measurement of acoustic excitation in the structure including acoustic response of the coating; and
determining one or more defect properties of the coating based on the acoustic response of the coating in the filtered measurement of acoustic excitation in the structure;
wherein one or more maintenance activities for the structure is performed based on the one or more defect properties of the coating.