레이저 선 배열을 이용한 레이저-여기 표면 탄성파의 발생 및 주파수 특성Generation of Surface Acoustic Waves By Laser Line Array and Its Frequency Characteristics

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dc.contributor.author장태성-
dc.contributor.author이정주-
dc.contributor.author이승석-
dc.date.accessioned2013-03-17T00:25:01Z-
dc.date.available2013-03-17T00:25:01Z-
dc.date.created2012-02-06-
dc.date.issued2001-11-09-
dc.identifier.citation한국비파괴검사학회 2001년 추계학술대회, v., no., pp.150 - 155-
dc.identifier.urihttp://hdl.handle.net/10203/137788-
dc.description.abstractSurface acoustic waves are very effective for the inspection of cracks and other defects in near-field region of the sample. Surface acoustic waves were generated by illumination of a sample surface with a Q-switched Nd:YAG laser pulse. A multiple slit and a cylindrical lens were used to generate the tone-burst like surface waves. Non contact detection of laser-generated surface acoustic waves was performed with the fiber optic Sagnac interferometer on a carbon steel specimen. Rayleigh wave velocity was obtained by the cross correlation of the signals recorded at different location, and was used to estimate the predominant frequency of the surface wave. Adjustment of the center frequency of the surface wave was performed by changing the distance between the sample and the lens, and the proper range for narrowband frequency was discussed.-
dc.languageKOR-
dc.publisher한국비파괴검사학회-
dc.title레이저 선 배열을 이용한 레이저-여기 표면 탄성파의 발생 및 주파수 특성-
dc.title.alternativeGeneration of Surface Acoustic Waves By Laser Line Array and Its Frequency Characteristics-
dc.typeConference-
dc.type.rimsCONF-
dc.citation.beginningpage150-
dc.citation.endingpage155-
dc.citation.publicationname한국비파괴검사학회 2001년 추계학술대회-
dc.identifier.conferencecountrySouth Korea-
dc.identifier.conferencecountrySouth Korea-
dc.contributor.localauthor이정주-
dc.contributor.nonIdAuthor장태성-
dc.contributor.nonIdAuthor이승석-
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ME-Conference Papers(학술회의논문)
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