Please use this identifier to cite or link to this item:
http://hdl.handle.net/10397/106584
DC Field | Value | Language |
---|---|---|
dc.contributor | Department of Mechanical Engineering | - |
dc.creator | Qiu, L | - |
dc.creator | Liu, B | - |
dc.creator | Yuan, S | - |
dc.creator | Su, Z | - |
dc.date.accessioned | 2024-05-09T00:54:27Z | - |
dc.date.available | 2024-05-09T00:54:27Z | - |
dc.identifier.issn | 0041-624X | - |
dc.identifier.uri | http://hdl.handle.net/10397/106584 | - |
dc.language.iso | en | en_US |
dc.publisher | Elsevier BV | en_US |
dc.rights | © 2015 Elsevier B.V. All rights reserved. | en_US |
dc.rights | © 2015. 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 Qiu, L., Liu, B., Yuan, S., & Su, Z. (2016). Impact imaging of aircraft composite structure based on a model-independent spatial-wavenumber filter. Ultrasonics, 64, 10-24 is available at https://doi.org/10.1016/j.ultras.2015.07.006. | en_US |
dc.subject | Composite structure | en_US |
dc.subject | Impact imaging | en_US |
dc.subject | Lamb wave | en_US |
dc.subject | Linear piezoelectric sensor array | en_US |
dc.subject | Spatial-wavenumber filter | en_US |
dc.title | Impact imaging of aircraft composite structure based on a model-independent spatial-wavenumber filter | en_US |
dc.type | Journal/Magazine Article | en_US |
dc.identifier.spage | 10 | - |
dc.identifier.epage | 24 | - |
dc.identifier.volume | 64 | - |
dc.identifier.doi | 10.1016/j.ultras.2015.07.006 | - |
dcterms.abstract | The spatial-wavenumber filtering technique is an effective approach to distinguish the propagating direction and wave mode of Lamb wave in spatial-wavenumber domain. Therefore, it has been gradually studied for damage evaluation in recent years. But for on-line impact monitoring in practical application, the main problem is how to realize the spatial-wavenumber filtering of impact signal when the wavenumber of high spatial resolution cannot be measured or the accurate wavenumber curve cannot be modeled. In this paper, a new model-independent spatial-wavenumber filter based impact imaging method is proposed. In this method, a 2D cross-shaped array constructed by two linear piezoelectric (PZT) sensor arrays is used to acquire impact signal on-line. The continuous complex Shannon wavelet transform is adopted to extract the frequency narrowband signals from the frequency wideband impact response signals of the PZT sensors. A model-independent spatial-wavenumber filter is designed based on the spatial-wavenumber filtering technique. Based on the designed filter, a wavenumber searching and best match mechanism is proposed to implement the spatial-wavenumber filtering of the frequency narrowband signals without modeling, which can be used to obtain a wavenumber-time image of the impact relative to a linear PZT sensor array. By using the two wavenumber-time images of the 2D cross-shaped array, the impact direction can be estimated without blind angle. The impact distance relative to the 2D cross-shaped array can be calculated by using the difference of time-of-flight between the frequency narrowband signals of two different central frequencies and the corresponding group velocities. The validations performed on a carbon fiber composite laminate plate and an aircraft composite oil tank show a good impact localization accuracy of the model-independent spatial-wavenumber filter based impact imaging method. | - |
dcterms.accessRights | open access | en_US |
dcterms.bibliographicCitation | Ultrasonics, Jan. 2016, v. 64, p. 10-24 | - |
dcterms.isPartOf | Ultrasonics | - |
dcterms.issued | 2016-01 | - |
dc.identifier.scopus | 2-s2.0-84942553237 | - |
dc.identifier.eissn | 1874-9968 | - |
dc.description.validate | 202405 bcch | - |
dc.description.oa | Accepted Manuscript | en_US |
dc.identifier.FolderNumber | ME-1079 | en_US |
dc.description.fundingSource | Others | en_US |
dc.description.fundingText | National Science Fund for Distinguished Young Scholars; Natural Science Foundation of China; Chinese Foundation of Postdoctoral Science; Doctoral Program of Higher Educations in China; State Key Laboratory of Mechanics and Control of Mechanical Structures; Priority Academic Program Development of Jiangsu Higher Education Institutions; Qing Lan Project | en_US |
dc.description.pubStatus | Published | en_US |
dc.identifier.OPUS | 6582098 | en_US |
dc.description.oaCategory | Green (AAM) | en_US |
Appears in Collections: | Journal/Magazine Article |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
Su_Impact_Imaging_Aircraft.pdf | Pre-Published version | 1.16 MB | Adobe PDF | View/Open |
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