JP-7857422-B2 - Coating inspection using steady-state excitation

JP7857422B2JP 7857422 B2JP7857422 B2JP 7857422B2JP-7857422-B2

Inventors

ジャコブソン、エリカマリー
カミングス、イアントーマス
フリン、エリックブライアン
ワハター、アダムジョセフ
チャロナー－ギル、ベンジャミンエム．
ジェンター、ブロック
キンテロ、マルティン
サンダース、ライアンエス．

Assignees

シェブロンユー．エス．エー．インコーポレイテッド
トライアドナショナルセキュリティー、エルエルシー

Dates

Publication Date: 20260512
Application Date: 20230222
Priority Date: 20220313

Claims (14)

A method for inspecting coatings, wherein the method is The acquisition of measurements of acoustic excitation within a structure, wherein the structure includes a substrate and a coating on at least a portion of the substrate. The method involves filtering the measured values of acoustic excitations within the structure to remove the acoustic response of the substrate from the measured values, wherein the filtered measured values of acoustic excitations within the structure include the acoustic response of the coating. The process includes determining one or more properties of the coating based on the acoustic response of the coating in the filtered measurements of acoustic excitations within the structure, Determining one or more properties of the coating based on the acoustic response of the coating in the filtered measurements of acoustic excitation within the structure is: Based on the acoustic response of the coating in the filtered measurements of acoustic excitation within the structure, a defect map of the coating is generated. A method comprising determining one or more properties of the coating based on the defect map .
The method according to claim 1, wherein filtering the measured values of acoustic excitations within the structure to remove the acoustic response of the substrate from the measured values includes applying one or more spatial band rejection filters.
The method according to claim 1, wherein the one or more properties of the coating include the location, size, and/or type of defects within the coating.
The method according to claim 3, wherein the defect in the coating includes a reduction in adhesion between the coating and the substrate.
The method according to claim 1 , wherein the defect map is superimposed on the structure or aligned with the structure.
The method according to claim 5, wherein a plurality of defect maps of the coating are generated based on the acoustic response of the coating at different times, and the change or progression of defects in the coating is determined based on the plurality of defect maps superimposed on or aligned with the structure.
The method according to claim 6, wherein generating the defect map of the coating based on the acoustic response of the coating in the filtered measured values of acoustic excitations within the structure comprises determining the pixel values of the defect map based on outlier analysis of the acoustic response of the coating .
The method according to claim 7 , wherein the measured values of acoustic excitation within the structure include measured values of displacement response, velocity response, and/or acceleration response.
The method according to claim 8 , wherein the outlier analysis of the acoustic response of the coating includes calculating the changes in the displacement response, the velocity response, and/or the acceleration response.
The method according to claim 9 , wherein one or more properties of the coating are determined non-destructively and at a distance from the structure.
The method according to claim 10 , wherein the one or more properties of the coating are determined by a line inspection of the structure.
The method according to claim 11 , wherein one or more maintenance operations on the structure are performed based on one or more properties of the coating.
A system for coating inspection, wherein the system is It includes one or more physical processors, and the one or more physical processors, by machine-readable instructions, The acquisition of measurements of acoustic excitation within a structure, wherein the structure includes a substrate and a coating on at least a portion of the substrate. The method involves filtering the measured values of acoustic excitations within the structure to remove the acoustic response of the substrate from the measured values, wherein the filtered measured values of acoustic excitations within the structure include the acoustic response of the coating. Based on the acoustic response of the coating in the filtered measurements of acoustic excitation within the structure, one or more properties of the coating are determined. It is configured to do the following : Determining one or more properties of the coating based on the acoustic response of the coating in the filtered measurements of acoustic excitation within the structure is: Based on the acoustic response of the coating in the filtered measurements of acoustic excitation within the structure, a defect map of the coating is generated. A system comprising determining one or more properties of the coating based on the defect map .
The system according to claim 13 , wherein filtering the measured values of acoustic excitations within the structure to remove the acoustic response of the substrate from the measured values includes applying one or more spatial band rejection filters.

Description

This disclosure generally pertains to the field of coating inspection. Federal Rights Statement The United States Government has certain rights in the present invention in accordance with Agreement No. 89233218CNA000001 between the United States Department of Energy and TRIAD National Security, LLC for the operation of the Los Alamos National Laboratory. Parties to the Joint Research Agreement The research work described herein was conducted under a Joint Research and Development Agreement (CRADA), CRADA number LA05C10518, between Los Alamos National Laboratory (LANL) and Chevron under LANL-Chevron Alliance. Structural elements may have coatings to protect their foundations (substrates). For example, protective coatings may be applied to steel panels to protect them from damage. If there is damage within the coating, the foundation structure may be exposed to damage. Identifying damage within the coating allows for corrective measures to be taken before the foundation structure is damaged. This disclosure relates to coating inspection. Measurements of acoustic excitation within a structure may be obtained. The structure may include a substrate and a coating on at least a portion of the substrate. The measurements of acoustic excitation within the structure may be filtered to remove the acoustic response of the substrate from the measurements. The filtered measurements of acoustic excitation within the structure may include the acoustic response of the coating. Based on the acoustic response of the coating and/or other information in the filtered measurements of acoustic excitation within the structure, one or more properties of the coating may be determined. A system for coating inspection may include one or more electronic memory devices, one or more processors, and/or other components. The electronic memory device may store information about the structure, information about the coating on the structure, information about acoustic excitation within the structure, information about the acoustic response of the structure, information about the acoustic response of the coating, information about the properties of the coating, and/or other information. The processor(s) may consist of machine-readable instructions. After executing the machine-readable instructions, the processor(s) may be prompted to perform coating inspection. The machine-readable instructions may include one or more computer program components. The computer program components may include one or more of the following: measurement components, filter components, characteristic components, and/or other computer program components. The measurement component may be configured to acquire measurements of acoustic excitations within a structure. The structure may include a substrate and a coating on at least a portion of the substrate. In some embodiments, the measurements of acoustic excitations within the structure may include measurements of displacement response, velocity response, and/or acceleration response. The filter component may be configured to filter the measurements of acoustic excitations within the structure. Filtering the measurements of acoustic excitations within the structure may remove the acoustic response of the substrate from the measurements. The filtered measurements of acoustic excitations within the structure may include the acoustic response of the coating. In some embodiments, filtering the measurements of acoustic excitations within the structure to remove the acoustic response of the substrate from the measurements may involve applying one or more spatial band rejection filters. The characteristic component may be configured to determine one or more characteristics of the coating. The coating characteristics may be determined based on the acoustic response of the coating and/or other information in filtered measurements of acoustic excitations within the structure. In some embodiments, the coating characteristics may include the location, size, and/or type of one or more defects in the coating. In some embodiments, the defects in the coating may include reduced adhesion between the coating and the substrate. In some embodiments, the coating properties may be determined non-destructively and at a distance from the structure. In some embodiments, the coating properties may be determined by a line inspection of the structure. In some embodiments, one or more maintenance operations on the structure may be performed based on the coating properties. In some embodiments, determining the properties of a coating based on the acoustic response of the coating in filtered measurements of acoustic excitations within a structure may include generating one or more defect maps of the coating based on the acoustic response of the coating in filtered measurements of acoustic excitations within a structure and/or other information, and determining the properties of the coating based on the defect map(s). In some embodiments, the defect ma