Rail Inspection Using Noncontact Laser Ultrasonics

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dc.contributor.author김낙현ko
dc.contributor.author손훈ko
dc.contributor.author한순우ko
dc.date.accessioned2013-03-12T22:30:09Z-
dc.date.available2013-03-12T22:30:09Z-
dc.date.created2013-01-10-
dc.date.created2013-01-10-
dc.date.created2013-01-10-
dc.date.issued2012-12-
dc.identifier.citation비파괴검사학회지, v.32, no.6, pp.696 - 702-
dc.identifier.issn1225-7842-
dc.identifier.urihttp://hdl.handle.net/10203/103731-
dc.description.abstractIn this study, a noncontact laser ultrasonic system is proposed for rail defect detection. An Nd-Yag pulse laser is used for generation of ultrasonic waves, and the corresponding ultrasonic responses are measured by a laser Doppler vibrometer. For the detection of rail surface damages, the shape of the excitation laser beam is transformed into a line. On the other hand, a point source laser beam is used for the inspection of defects inside a rail head. Then, the interactions of propagating ultrasonic waves with defects are examined using actual rail specimens. Amplitude attenuation was mainly observed for a surface crack, and reflections were most noticeable from an internal damage. Finally, opportunities and challenges associated with real-time rail inspection from a high-speed train are discussed.-
dc.languageKorean-
dc.publisher한국비파괴검사학회-
dc.titleRail Inspection Using Noncontact Laser Ultrasonics-
dc.typeArticle-
dc.type.rimsART-
dc.citation.volume32-
dc.citation.issue6-
dc.citation.beginningpage696-
dc.citation.endingpage702-
dc.citation.publicationname비파괴검사학회지-
dc.identifier.kciidART001727263-
dc.contributor.localauthor손훈-
dc.contributor.nonIdAuthor김낙현-
dc.contributor.nonIdAuthor한순우-
dc.subject.keywordAuthorNoncontact Laser Ultrasonics-
dc.subject.keywordAuthorRail Inspection-
dc.subject.keywordAuthorDamage Detection-
dc.subject.keywordAuthorHigh-Speed Train-
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CE-Journal Papers(저널논문)
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