Please use this identifier to cite or link to this item:
http://hdl.handle.net/10397/95529
DC Field | Value | Language |
---|---|---|
dc.contributor | Department of Mechanical Engineering | en_US |
dc.contributor | Mainland Development Office | en_US |
dc.creator | Shan, S | en_US |
dc.creator | Cheng, L | en_US |
dc.date.accessioned | 2022-09-21T01:40:46Z | - |
dc.date.available | 2022-09-21T01:40:46Z | - |
dc.identifier.issn | 0041-624X | en_US |
dc.identifier.uri | http://hdl.handle.net/10397/95529 | - |
dc.language.iso | en | en_US |
dc.publisher | Elsevier | en_US |
dc.rights | © 2021 Elsevier B.V. All rights reserved. | en_US |
dc.rights | © 2021. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/. | en_US |
dc.rights | The following publication Shan, S., & Cheng, L. (2022). Two-dimensional scattering features of the mixed second harmonic A0 mode Lamb waves for incipient damage localization. Ultrasonics, 119, 106554 is available at https://dx.doi.org/10.1016/j.ultras.2021.106554. | en_US |
dc.subject | Damage localization | en_US |
dc.subject | Incipient damage | en_US |
dc.subject | Mode mixing | en_US |
dc.subject | Nonlinear Lamb wave | en_US |
dc.title | Two-dimensional scattering features of the mixed second harmonic A0 mode Lamb waves for incipient damage localization | en_US |
dc.type | Journal/Magazine Article | en_US |
dc.identifier.volume | 119 | en_US |
dc.identifier.doi | 10.1016/j.ultras.2021.106554 | en_US |
dcterms.abstract | Inspection of incipient structural damage is of great significance. Existing techniques based on nonlinear guided waves have shown great promise for the detection of incipient damage due to material microstructure changes, but with only limited success for damage localization, which is technically more challenging. Our previous work uncovered the existence of the second harmonic A0 mode Lamb waves in a PZT-driven system, as a result of the mixing of the primary A0 and S0 mode Lamb waves, thus pointing at the possibility of performing damage localization through tuning the size of the wave mixing zone. In the present study, a two-dimensional incipient damage localization method is proposed based on this newly discovered wave phenomenon. By visualizing the nonlinear wave field, damage-induced nonlinear wave scattering features are first investigated. A dedicated localization algorithm is then proposed and evaluated. Numerical results show that the energy of the scattered nonlinear wave is mainly confined to a narrow region along the actuator-damage path, the spatial variation of which can be approximated by a simple Gaussian function. Embedding this information into the proposed localization strategy, damage localization can be achieved using a simple physical system. Experiments are finally carried out to validate the 2nd A0 wave scattering features and the proposed damage localization method. | en_US |
dcterms.accessRights | open access | en_US |
dcterms.bibliographicCitation | Ultrasonics, Feb. 2022, v. 119, 106554 | en_US |
dcterms.isPartOf | Ultrasonics | en_US |
dcterms.issued | 2022-02 | - |
dc.identifier.scopus | 2-s2.0-85115770563 | - |
dc.identifier.eissn | 1874-9968 | en_US |
dc.identifier.artn | 106554 | en_US |
dc.description.validate | 202209 bcfc | en_US |
dc.description.oa | Accepted Manuscript | en_US |
dc.identifier.FolderNumber | ME-0006 | - |
dc.description.fundingSource | RGC | en_US |
dc.description.fundingSource | Others | en_US |
dc.description.fundingText | National Natural Science Foundations of China; Research Fund of State Key Laboratory of Mechanics and Control of Mechanical Structures; Innovation and Technology Commission of the HKSAR Government | en_US |
dc.description.pubStatus | Published | en_US |
dc.identifier.OPUS | 56311734 | - |
dc.description.oaCategory | Green (AAM) | en_US |
Appears in Collections: | Journal/Magazine Article |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
Shan_Two-Dimensional_Scattering_Features.pdf | Pre-Published version | 4.81 MB | Adobe PDF | View/Open |
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