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In situ Measurement of Lateral Side-Necking of a Fracture Specimen Using a Stereo Vision and Digital Image Correlation
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Stereo Vision 과 디지털 화상상관법을 이용한 파괴시험편의 측면 함몰의 현장 측정

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Type
Academic journal
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Journal
Korean Society for Precision Engineering Journal of the Korean Society for Precision Engineering Vol.21 No.10 (WN.163) KCI Accredited Journals SCOPUS
Published
2004.10
Pages
154 - 161 (8page)

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In situ Measurement of Lateral Side-Necking of a Fracture Specimen Using a Stereo Vision and Digital Image Correlation
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An experimental method for measuring side-necking deformation near a crack-tip is described. It is based on Stereoscopic Digital Speckle Photography and Digital Image Correlation, and it is simple and robust to mechanical vibration inherent to a hydraulic material test system. The validity and accuracy are evaluated through a calibration for rigid body translation. A case study has been performed for a CT specimen made of a ductile steel and the three dimensional profiles of the side-necked region are presented as the load increases. Also, the details of the procedure and the surface treatment are discussed.

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