Review of Second Harmonic Generation Measurement Techniques for Material State Determination in Metals

@article{Matlack2014ReviewOS,
title={Review of Second Harmonic Generation Measurement Techniques for Material State Determination in Metals},
author={Kathryn H Matlack and J. Y. Kim and L. Jacobs and J. Qu},
journal={Journal of Nondestructive Evaluation},
year={2014},
volume={34},
pages={1-23}
}
This paper presents a comprehensive review of the current state of knowledge of second harmonic generation (SHG) measurements, a subset of nonlinear ultrasonic nondestructive evaluation techniques. These SHG techniques exploit the material nonlinearity of metals in order to measure the acoustic nonlinearity parameter, $$\beta$$β. In these measurements, a second harmonic wave is generated from a propagating monochromatic elastic wave, due to the anharmonicity of the crystal lattice, as well as… Expand
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