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

Claim 7:
8. A system for determining structural vibration mode characteristics of a component, the system comprising:
at least one imaging device, and the at least one imaging device includes a first imaging device and a second imaging device spaced from the first imaging device; and
a data acquisition device in signal communication with the at least one imaging device, the data acquisition device comprising:
a processor; and
memory in signal communication with the processor, the memory containing instructions recorded therein which, when executed by the processor, cause the processor to:
prepare a digital image correlation (DIC) dataset;
apply a dynamic mode decomposition (DMD) technique to the DIC dataset to determine a plurality of DMD modes;
select at least one dominant DMD mode from the plurality of DMD modes;
classify each of the at least one selected dominant DMD mode as a standing wave or a traveling wave; and
determine structural vibration mode characteristics by extracting the structural vibration mode characteristics from each of the at least one selected dominant DMD mode having a standing wave classification.