A nondestructive multispectral vibrothermography inspection system to inspect a component without removal of a coating thereon, the system comprising: a fixture to retain the component; an ultrasonic excitation source directed toward the component to generate ultrasonic excitations in the component over a plurality of excitation frequencies comprising a range of frequencies from 20 kHz to 2 MHz; and a sensor directed toward the component to measure the natural vibrational modes of the component as surface velocity generated by the ultrasonic excitations; characterised in that the system further comprises: a multispectral thermography system directed toward the component to determine a spectral signature in the component from the excitations for each of the plurality of ultrasonic excitation frequencies to provide a relation between the vibrational stresses in the component to the spectral signature therefrom, wherein the multispectral thermography system comprises a plurality of a Near infrared module, a short-wave infrared (SWIR) module, a mid-wave infrared (MWIR) module, a long-wave infrared (LWIR) module, and a very long-wave infrared (VLWIR) module and wherein the spectral signature is from 0.5 to 22 μm in wavelength; a controller adapted to classify the component based on a correlation between the surface velocities from the excitations and the spectral signature in the component from the excitations and based on a comparison of the correlation against a multitude of correlations; a database of the correlations between vibrational frequencies of a multiple of components and the spectral signature thereof; and an image recognition algorithm adapted to match the spectral signature of the component against a database that contains multispectral images of previously inspected components known to have either failed or passed the inspection. a fixture to retain the component; an ultrasonic excitation source directed toward the component to generate ultrasonic excitations in the component over a plurality of excitation frequencies comprising a range of frequencies from 20 kHz to 2 MHz; and a sensor directed toward the component to measure the natural vibrational modes of the component as surface velocity generated by the ultrasonic excitations; characterised in that the system further comprises: a multispectral thermography system directed toward the component to determine a spectral signature in the component from the excitations for each of the plurality of ultrasonic excitation frequencies to provide a relation between the vibrational stresses in the component to the spectral signature therefrom, wherein the multispectral thermography system comprises a plurality of a Near infrared module, a short-wave infrared (SWIR) module, a mid-wave infrared (MWIR) module, a long-wave infrared (LWIR) module, and a very long-wave infrared (VLWIR) module and wherein the spectral signature is from 0.5 to 22 μm in wavelength; a controller adapted to classify the component based on a correlation between the surface velocities from the excitations and the spectral signature in the component from the excitations and based on a comparison of the correlation against a multitude of correlations; a database of the correlations between vibrational frequencies of a multiple of components and the spectral signature thereof; and an image recognition algorithm adapted to match the spectral signature of the component against a database that contains multispectral images of previously inspected components known to have either failed or passed the inspection. a multispectral thermography system directed toward the component to determine a spectral signature in the component from the excitations for each of the plurality of ultrasonic excitation frequencies to provide a relation between the vibrational stresses in the component to the spectral signature therefrom, wherein the multispectral thermography system comprises a plurality of a Near infrared module, a short-wave infrared (SWIR) module, a mid-wave infrared (MWIR) module, a long-wave infrared (LWIR) module, and a very long-wave infrared (VLWIR) module and wherein the spectral signature is from 0.5 to 22 μm in wavelength; a controller adapted to classify the component based on a correlation between the surface velocities from the excitations and the spectral signature in the component from the excitations and based on a comparison of the correlation against a multitude of correlations; a database of the correlations between vibrational frequencies of a multiple of components and the spectral signature thereof; and an image recognition algorithm adapted to match the spectral signature of the component against a database that contains multispectral images of previously inspected components known to have either failed or passed the inspection.