DC Field | Value | Language |
---|---|---|
dc.contributor.author | Truong, Thanh Chung | ko |
dc.contributor.author | Lee, Jung-Ryul | ko |
dc.date.accessioned | 2016-07-07T04:53:40Z | - |
dc.date.available | 2016-07-07T04:53:40Z | - |
dc.date.created | 2016-05-24 | - |
dc.date.created | 2016-05-24 | - |
dc.date.issued | 2016-09 | - |
dc.identifier.citation | OPTICS AND LASERS IN ENGINEERING, v.84, pp.82 - 88 | - |
dc.identifier.issn | 0143-8166 | - |
dc.identifier.uri | http://hdl.handle.net/10203/209707 | - |
dc.description.abstract | In recent years, the technology of using laser ultrasonic propagation imaging for damage visualization of composite structures were applied to real-world applications. Among many choices of sensor for the Ultrasonic Propagation Imager, the laser interferometry has several advantages: it is non-invasive, and portable, and with extraordinarily long-range measurement. However, the critical issue with interferometry sensing is its low signal-to-noise ratio (SNR), where the background noise can mask the damage-induced waves and making it impossible to identify the damages, especially in composite structures. In this paper, we propose a hardware-based SNR enhancement technique using multiple Laser Doppler Vibrometers (LDVs). The out-of-plane mode of ultrasonic signals are measured by multiple LDVs at a common sensing point and then averaged in real time. We showed that the SNR enhancement in experiments was consistent with the theoretical prediction, and also the test results showed a clear improvement for damage visualization of structures using Ultrasonic Wave Propagation Imaging and Ultrasonic Wavenumber Imaging algorithms. (C) 2016 Elsevier Ltd. All rights reserved. | - |
dc.language | English | - |
dc.publisher | ELSEVIER SCI LTD | - |
dc.title | SNR enhancement for composite application using multiple Doppler vibrometers based laser ultrasonic propagation imager | - |
dc.type | Article | - |
dc.identifier.wosid | 000376713300009 | - |
dc.identifier.scopusid | 2-s2.0-84963686132 | - |
dc.type.rims | ART | - |
dc.citation.volume | 84 | - |
dc.citation.beginningpage | 82 | - |
dc.citation.endingpage | 88 | - |
dc.citation.publicationname | OPTICS AND LASERS IN ENGINEERING | - |
dc.identifier.doi | 10.1016/j.optlaseng.2016.03.029 | - |
dc.contributor.localauthor | Lee, Jung-Ryul | - |
dc.type.journalArticle | Article | - |
dc.subject.keywordAuthor | Laser Doppler Vibrometers | - |
dc.subject.keywordAuthor | Carbon fiber reinforced plastic | - |
dc.subject.keywordAuthor | Aerospace structure | - |
dc.subject.keywordAuthor | Laser Ultrasonic Propagation Imager | - |
dc.subject.keywordAuthor | Ultrasonic Wavenumber Imaging | - |
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