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

  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},
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
Nonlinear ultrasonics for material state awareness
  • L. Jacobs
  • Materials Science
  • 2016 IEEE International Ultrasonics Symposium (IUS)
  • 2016
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