Patent ID: 11928811
Assignee: RTX CORPORATION
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 0:
1. A method for determining structural vibration mode characteristics of a component, the method comprising:
obtaining digital image correlation (DIC) image data by recording a plurality of images of an imaging surface of a component with at least one imaging device, and the imaging surface has a pattern;
preparing a (DIC) dataset for the component using the DIC image data;
applying a dynamic mode decomposition (DMD) technique to the DIC dataset to determine a plurality of DMD modes;
selecting at least one dominant DMD mode from the plurality of DMD modes;
classifying each of the at least one selected dominant DMD mode as a standing wave or a traveling wave; and
determining structural vibration mode characteristics of the component by extracting the structural vibration mode characteristics from each of the at least one selected dominant DMD mode having a standing wave classification.