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In situ Measurement of Lateral Side-Necking of a Fracture Specimen Using a Stereo Vision and Digital Image Correlation  

Lee Jeong-Hyun (전남대학교 대학원 기계공학과)
Kang Ki-Ju (전남대학교 기계시스템공학부)
Publication Information
Journal of the Korean Society for Precision Engineering / v.21, no.10, 2004 , pp. 154-161 More about this Journal
Abstract
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 fur 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.
Keywords
Stereoscopic Digital Speckle Photography(SDSP); Side-Necking; Digital Image Correlation(DTC); Plastic Deformation Region;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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