@inproceedings{4721ea71db0d461aa04f095d61eb178c,
title = "Measurement and fitting techniques for the assessment of material nonlinearity using nonlinear Rayleigh waves",
abstract = " This research considers the effects of diffraction, attenuation, and the nonlinearity of generating sources on measurements of nonlinear ultrasonic Rayleigh wave propagation. A new theoretical framework for correcting measurements made with air-coupled and contact piezoelectric receivers for the aforementioned effects is provided based on analytical models and experimental considerations. A method for extracting the nonlinearity parameter β 11 is proposed based on a nonlinear least squares curve-fitting algorithm that is tailored for Rayleigh wave measurements. Quantitative experiments are conducted to confirm the predictions for the nonlinearity of the piezoelectric source and to demonstrate the effectiveness of the curve-fitting procedure. These experiments are conducted on aluminum 2024 and 7075 specimens and a β117075/β112024 measure of 1.363 agrees well with previous literature and earlier work.",
keywords = "Attenuation effects, Diffraction effects, Nonlinear Rayleigh waves, Nonlinear acoustics, Source Nonlinearity",
author = "David Torello and Kim, {Jin Yeon} and Jianmin Qu and Jacobs, {Laurence J.}",
note = "Publisher Copyright: {\textcopyright} 2015 AIP Publishing LLC.; 41st Annual Review of Progress in Quantitative Nondestructive Evaluation, QNDE 2014 ; Conference date: 20-07-2014 Through 25-07-2014",
year = "2015",
doi = "10.1063/1.4914603",
language = "English",
series = "AIP Conference Proceedings",
pages = "136--145",
editor = "Chimenti, {Dale E.} and Bond, {Leonard J.}",
booktitle = "41st Annual Review of Progress in Quantitative Nondestructive Evaluation, Volume 34",
}