@inproceedings{a3117087055749c58fe27c5292f7d883,
title = "Directional nonlinear guided wave mixing: Case study of counter-propagating shear horizontal waves",
abstract = "While much nonlinear ultrasonics research has been conducted on higher harmonic generation, wave mixing provides the potential for sensitive measurements of incipient damage unencumbered by instrumentation nonlinearity. Studies of nonlinear ultrasonic wave mixing, both collinear and noncollinear, for bulk waves have shown the robust capability of wave mixing for early damage detection. One merit of bulk wave mixing lies in their non-dispersive nature, but guided waves enable inspection of otherwise inaccessible material and a variety of mixing options. Co-directional guided wave mixing was studied previously, but arbitrary direction guided wave mixing has not been addressed until recently. Wave vector analysis is applied to study variable mixing angles to find wave mode triplets (two primary waves and a secondary wave) resulting in the phase matching condition. As a case study, counter-propagating Shear Horizontal (SH) guided wave mixing is analyzed. SH wave interactions generate a secondary Lamb wave mode that is readily receivable. Reception of the secondary Lamb wave mode is compared for an angle beam transducer, an air coupled transducer, and a laser Doppler vibrometer (LDV). Results from the angle beam and air coupled transducers are quite consistent, while the LDV measurement is plagued by variability issues.",
author = "Mostafa Hasanian and Lissenden, {Cliff J.}",
note = "Funding Information: This material is based upon the work supported by National Science Foundation (NSF) under award number 1300562. We sincerely appreciate the support provided by the ULTRAN Company. Publisher Copyright: {\textcopyright} 2018 Author(s).; 44th Annual Review of Progress in Quantitative Nondestructive Evaluation, QNDE 2017 ; Conference date: 16-07-2017 Through 21-07-2017",
year = "2018",
month = apr,
day = "20",
doi = "10.1063/1.5031554",
language = "English (US)",
series = "AIP Conference Proceedings",
publisher = "American Institute of Physics Inc.",
editor = "Chimenti, {Dale E.} and Bond, {Leonard J.}",
booktitle = "44th Annual Review of Progress in Quantitative Nondestructive Evaluation, Volume 37",
}