Transactions of Materials Processing (소성∙가공)

The Korean Society for Technology of Plasticity and materials processing (한국소성∙가공학회)
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Measurement of the Residual Stress in the Steel Wires by using Focused Ion Beam and Digital Image Correlation Method

집속 이온빔과 디지털 화상 관련법을 이용한 고 탄소 미세 강선의 잔류 응력 측정

  • 양요셉 (포항공과대학교 신소재공학과) ;
  • 배종구 (고려강선(주) 기술연구소) ;
  • 박찬경 (포항공과대학교 신소재공학과)
  • Published : 2007.07.01
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Abstract

The residual stress in axial direction of the steel wires has been measured by using a method based on the combination of the focused ion beam(FIB) milling and digital image correlation(DIC) program. The residual stress is calculated from the measured displacement field before and after the introduction of a slot along the steel wires. The displacement is obtained by the digital correlation analysis of high-resolution scanning electron micrographs, while the slot is introduced by FIB milling with low energy beam. The experimental procedures are described and the feasibilities are demonstrated in steel wires fabricated with different conditions. It reveals that the tensile residual stress is formed in all steel wires and this is strongly influenced by the fabrication conditions.

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References

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