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신명수

Shin, Myoungsu
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dc.citation.startPage 105862 -
dc.citation.title CEMENT AND CONCRETE RESEARCH -
dc.citation.volume 124 -
dc.contributor.author Ahn, Eunjong -
dc.contributor.author Shin, Myoungsu -
dc.contributor.author Popovics, John S. -
dc.contributor.author Weaver, Richard L. -
dc.date.accessioned 2023-12-21T18:39:36Z -
dc.date.available 2023-12-21T18:39:36Z -
dc.date.created 2019-09-02 -
dc.date.issued 2019-10 -
dc.description.abstract The main objective of this research is to investigate the applicability of diffuse ultrasound to the evaluation of distributed micro-cracking damage in concrete. To simulate the micro-cracking damage, polypropylene fibers with very low mechanical characteristics were embedded in concrete specimens, using three different fiber amounts (0, 0.3, and 0.6% by volume) to represent three different damage levels. Ultrasonic diffusivity and dissipation coefficients within a frequency range of 200 to 450 kHz, which represents the multiple scattering regime for typical concrete, are used to characterize the micro-cracking conditions of the specimens. Additionally, effects of the spacing between the source and receiver on the diffusion of ultrasound are explored. The test results confirm that the diffusivity decreases approximately 25% and dissipation increases 32% with increasing damage level, and they are fairly independent of the transducer spacing, which suggests promise for practical application of the method for concrete inspection in the field. -
dc.identifier.bibliographicCitation CEMENT AND CONCRETE RESEARCH, v.124, pp.105862 -
dc.identifier.doi 10.1016/j.cemconres.2019.105862 -
dc.identifier.issn 0008-8846 -
dc.identifier.scopusid 2-s2.0-85070646418 -
dc.identifier.uri https://scholarworks.unist.ac.kr/handle/201301/27331 -
dc.identifier.url https://www.sciencedirect.com/science/article/pii/S0008884618308160?via%3Dihub -
dc.identifier.wosid 000495142700022 -
dc.language 영어 -
dc.publisher Pergamon Press Ltd. -
dc.title Effectiveness of diffuse ultrasound for evaluation of micro-cracking damage in concrete -
dc.type Article -
dc.description.isOpenAccess FALSE -
dc.relation.journalWebOfScienceCategory Construction & Building Technology; Materials Science, Multidisciplinary 문서 정보 -
dc.relation.journalResearchArea Construction & Building Technology; Materials Science -
dc.type.docType Article -
dc.description.journalRegisteredClass scie -
dc.description.journalRegisteredClass scopus -
dc.subject.keywordAuthor Diffuse ultrasound -
dc.subject.keywordAuthor Diffusivity -
dc.subject.keywordAuthor Dissipation -
dc.subject.keywordAuthor Scattering -
dc.subject.keywordAuthor Micro-cracking -
dc.subject.keywordAuthor Nondestructive evaluation -
dc.subject.keywordPlus CEMENT PASTE -
dc.subject.keywordPlus WAVES -
dc.subject.keywordPlus SCATTERING -
dc.subject.keywordPlus DEPTH -
dc.subject.keywordPlus INHOMOGENEITY -
dc.subject.keywordPlus DEPENDENCE -
dc.subject.keywordPlus INSPECTION -
dc.subject.keywordPlus CRACKS -
dc.subject.keywordPlus SIZE -

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