Journal of Welding and Joining

The Korean Welding and Joining Society (대한용접접합학회)
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Residual stress measurements using neutron diffraction

중성자법에 의한 잔류응력 측정법

  • Woo, Wanchuck (Neutron Science Division, Korea Atomic Energy Research Institute) ;
  • Kim, Dong-Kyu (Neutron Science Division, Korea Atomic Energy Research Institute) ;
  • An, Gyu-Baek (Technical Research Laboratories, POSCO)
  • 우완측 (한국원자력연구원 중성자과학연구부) ;
  • 김동규 (한국원자력연구원 중성자과학연구부) ;
  • 안규백 (포스코기술연구원 접합연구그룹)
  • Received : 2015.01.28
  • Accepted : 2015.02.24
  • Published : 2015.02.28
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Abstract

Residual stresses are inherently introduced into the engineering components during manufacturing including rolling, forging, bending and welding processes. Excessive residual stresses are known to be detrimental to the proper integrity and performance of components. Neutron diffraction has become a well-established technique for the determination of residual stresses in welds. The deep penetration capability of neutrons into most metallic materials makes neutron diffraction a powerful tool for the residual stress measurements through the thickness of the weld specimen. Furthermore, the unique volume-averaged bulk characteristic of the scattering beam and mapping capability in three dimensions is suitable for the engineering purpose. In this presentation, the neutron diffraction measurements of the residual stresses will be introduced and measurement results will highlighted in thick weld plates.

Keywords

References

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