Journal of the Korean Society for Precision Engineering (한국정밀공학회지)

Korean Society for Precision Engineering (한국정밀공학회)
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In situ Measurement of Lateral Side-Necking of a Fracture Specimen Using a Stereo Vision and Digital Image Correlation

Stereo Vision과 디지털 화상상관법을 이용한 파괴시험편의 측면 함몰의 현장 측정

  • 이정현 (전남대학교 대학원 기계공학과) ;
  • 강기주 (전남대학교 기계시스템공학부)
  • Published : 2004.10.01
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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

References

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