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ASM Handbook

Nondestructive Evaluation of Materials

Edited by
Aquil Ahmad
Aquil Ahmad
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Leonard J. Bond
Leonard J. Bond
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ASM International
Volume
17
ISBN electronic:
978-1-62708-190-0
Publication date:
2018
Book Chapter

Nonlinear Ultrasonics

By
Peter B. Nagy
Peter B. Nagy
University of Cincinnati
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Jianmin Qu
Jianmin Qu
Tufts University
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Laurence J. Jacobs
Laurence J. Jacobs
Georgia Institute of Technology
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Published:
2018
Page range:
322 - 330
Publication history
August 21, 2018

Abstract

Nonlinear ultrasonic nondestructive examination (NDE) techniques are based on nonlinear interaction of ultrasonic waves with the material to be characterized and defects to be detected. This article introduces the basic principles of nonlinear material-wave interaction, the origin of intrinsic nonlinearity in intact solids, and the main mechanisms of excess nonlinearity in damaged metals. It describes the measurement methods for nonlinear ultrasonic materials characterization and flaw-detection. The article schematically illustrates the instrumentation used for measurements of longitudinal wave and Rayleigh surface acoustic waves. It concludes with information on the applications of nonlinear ultrasonics.

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Peter B. Nagy, Jianmin Qu, Laurence J. Jacobs, 2018. "Nonlinear Ultrasonics", Nondestructive Evaluation of Materials, Aquil Ahmad, Leonard J. Bond

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