NONDESTRUCTIVE MULTISPECTRAL VIBROTHERMOGRAPHY INSPECTION SYSTEM AND METHOD THEREFOR

    公开(公告)号:US20190265178A1

    公开(公告)日:2019-08-29

    申请号:US15904966

    申请日:2018-02-26

    IPC分类号: G01N25/72 G01N29/12 G01N29/22

    摘要: A nondestructive multispectral vibrothermography inspection system includes a fixture to retain a component, an ultrasonic excitation source directed toward the component retained within the fixture, a laser Doppler vibrometer directed toward the component retained within the fixture, and a multispectral thermography system directed toward the component retained within the fixture. A method for nondestructive multispectral vibrothermography inspection of a component, includes generating ultrasonic excitations in a component over a broad range of frequencies; determining a spectral signature in the component from the excitations; comparing the spectral energy signature against database 270 of correlations between vibrational frequencies of a multiple of components and the spectral energy distribution thereof, and classifying the component based on the database data.