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http://dx.doi.org/10.1016/j.net.2017.11.001

Strain and deformation angle for a steel pipe elbow using image measurement system under in-plane cyclic loading  

Kim, Sung-Wan (KOCED Seismic Simulation Test Center, Pusan National University)
Choi, Hyoung-Suk (KOCED Seismic Simulation Test Center, Pusan National University)
Jeon, Bub-Gyu (KOCED Seismic Simulation Test Center, Pusan National University)
Hahm, Dae-Gi (Integrated Safety Assessment Division, Korea Atomic Energy Research Institute)
Kim, Min-Kyu (Integrated Safety Assessment Division, Korea Atomic Energy Research Institute)
Publication Information
Nuclear Engineering and Technology / v.50, no.1, 2018 , pp. 190-202 More about this Journal
Abstract
Maintaining the integrity of the major equipment in nuclear power plants is critical to the safety of the structures. In particular, the soundness of the piping is a critical matter that is directly linked to the safety of nuclear power plants. Currently, the limit state of the piping design standard is plastic collapse, and the actual pipe failure is leakage due to a penetration crack. Actual pipe failure, however, cannot be applied to the analysis of seismic fragility because it is difficult to quantify. This paper proposes methods of measuring the failure strain and deformation angle, which are necessary for evaluating the quantitative failure criteria of the steel pipe elbow using an image measurement system. Furthermore, the failure strain and deformation angle, which cannot be measured using the conventional sensors, were efficiently measured using the proposed methods.
Keywords
Deformation Angle; Failure Strain; Image Measurement System; Nuclear Power Plant Piping; Steel Pipe Elbow;
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Times Cited By KSCI : 1  (Citation Analysis)
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