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

K. H. Matlack, J. Y. Kim, L. J. Jacobs, J. Qu

Research output: Contribution to journalArticlepeer-review

Abstract

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 the presence of microstructural features such as dislocations and precipitates. This article provides a summary of models that relate the different microstructural contributions to $$\beta $$β, and provides details of the different SHG measurement and analysis techniques available, focusing on longitudinal and Rayleigh wave methods. The main focus of this paper is a critical review of the literature that utilizes these SHG methods for the nondestructive evaluation of plasticity, fatigue, thermal aging, creep, and radiation damage in metals.

Original languageEnglish (US)
JournalJournal of Nondestructive Evaluation
Volume34
Issue number1
DOIs
StatePublished - Mar 1 2015
Externally publishedYes

Keywords

  • Microstructural evolution in metal
  • Nonlinear ultrasonic measurements
  • Second harmonic generation

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering

Fingerprint Dive into the research topics of 'Review of Second Harmonic Generation Measurement Techniques for Material State Determination in Metals'. Together they form a unique fingerprint.

Cite this