@inproceedings{169722c8ca564b2cbefa103cd0dc1b25,
title = "Detecting Cracks in Isotropic Plates Using Contact Acoustic Nonlinearity",
abstract = "This paper investigates using second harmonic of symmetric Lamb wave (S0) for detecting cracks in aluminum plates induced by contact acoustic nonlinearity (CAN) experimentally. The generation of nonlinear guided waves around the crack is studied in an aluminum plate. The effects of crack on generation of second harmonic of guided waves are investigated. The data is acquired in time domain and is processed using a signal processing approach consists of several applications in frequency and time-frequency domain. The results show that crack induces CAN which can be observed in form of higher harmonic of guided waves in frequency and time-frequency domain. Also it is shown that crack induces wave distortion with small magnitudes which can be observed in time domain data. However, the magnitude of wave distortion is not large enough to confirm the existence of crack in aluminum plates. The results show that nonlinear wave technique does not require base line data and can successfully detect cracks in aluminum plates.",
keywords = "contact acoustic nonlinearity, damage detection, symmetric Lamb wave",
author = "Reza Soleimanpour and Soleimani, {Sayed Mohamad}",
note = "Publisher Copyright: {\textcopyright} 2022, Avestia Publishing. All rights reserved.; 7th International Conference on Civil, Structural and Transportation Engineering, ICCSTE 2022 ; Conference date: 05-06-2022 Through 07-06-2022",
year = "2022",
doi = "10.11159/iccste22.158",
language = "English",
isbn = "9781990800047",
series = "International Conference on Civil, Structural and Transportation Engineering",
publisher = "Avestia Publishing",
editor = "Khaled Sennah",
booktitle = "Proceedings of the 7th International Conference on Civil, Structural and Transportation Engineering, ICCSTE 2022",
}