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DC Field | Value | Language |
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dc.citation.startPage | 106800 | - |
dc.citation.title | ULTRASONICS | - |
dc.citation.volume | 125 | - |
dc.contributor.author | Ahn, Eunjong | - |
dc.contributor.author | Shin, Myoungsu | - |
dc.contributor.author | Popovics, John S. | - |
dc.date.accessioned | 2023-12-21T13:42:45Z | - |
dc.date.available | 2023-12-21T13:42:45Z | - |
dc.date.created | 2022-07-06 | - |
dc.date.issued | 2022-09 | - |
dc.description.abstract | In this study, we investigated the suitability of applying air-coupled ultrasonic diffuse-wave techniques to concrete structures for the evaluation of arbitrarily distributed micro-cracking damage. Air-coupled test results were compared with those obtained using a conventional full-contact measurement system. Three different micro-cracking damage levels were simulated by embedding varying amounts of low-stiffness polypropylene fibers in concrete samples. Two principal diffuse-wave parameters, diffusivity and dissipation, were determined using air-coupled and full-contact test configurations. Wave frequencies of 300–600 kHz were employed, which set up significant ultrasonic scattering owing to the heterogeneous characteristics of concrete components (e.g., aggregates, micro-cracks expressed by fibers, and pores). In addition, the sensitivities of diffusivity and dissipation to the number of measurement locations were examined. The results demonstrated that the air-coupled method can provide an equivalent reliability to the full-contact method, allowing a much faster and flexible data collection. The spatial averaging of 20 arbitrarily selected data (measured at different locations) yielded sufficiently accurate diffuse-wave parameters, showing less than a 5 % difference from the average of 32 spatially different data. | - |
dc.identifier.bibliographicCitation | ULTRASONICS, v.125, pp.106800 | - |
dc.identifier.doi | 10.1016/j.ultras.2022.106800 | - |
dc.identifier.issn | 0041-624X | - |
dc.identifier.scopusid | 2-s2.0-85133295297 | - |
dc.identifier.uri | https://scholarworks.unist.ac.kr/handle/201301/58824 | - |
dc.identifier.wosid | 000824411000003 | - |
dc.language | 영어 | - |
dc.publisher | Elsevier BV | - |
dc.title | Air-coupled ultrasonic diffuse-wave techniques to evaluate distributed cracking damage in concrete | - |
dc.type | Article | - |
dc.description.isOpenAccess | FALSE | - |
dc.relation.journalWebOfScienceCategory | Acoustics;Radiology, Nuclear Medicine & Medical Imaging | - |
dc.relation.journalResearchArea | Acoustics;Radiology, Nuclear Medicine & Medical Imaging | - |
dc.type.docType | Article | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.subject.keywordAuthor | Diffuse wave | - |
dc.subject.keywordAuthor | Air-coupled ultrasound | - |
dc.subject.keywordAuthor | Non-destructive evaluation | - |
dc.subject.keywordAuthor | Distributed cracking damage | - |
dc.subject.keywordAuthor | Diffusivity | - |
dc.subject.keywordAuthor | Dissipation | - |
dc.subject.keywordPlus | DEPTH DETERMINATION | - |
dc.subject.keywordPlus | TOMOGRAPHY | - |
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