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http://dx.doi.org/10.3795/KSME-A.2005.29.5.754

Development of Optimum Global Failure Prediction Model for Steam Generator Tube with Two Parallel Cracks  

Moon Seong ln (성균관대학교 기계공학부)
Chang Yoon Suk (성균관대학교 기계공학부)
Lee Jin Ho (한국원자력안전기술연구소)
Song Myung Ho (한국원자력안전기술연구소)
Choi Young Hwan (한국원자력안전기술연구소)
Kim Joung Soo (한국원자력연구소)
Kim Young Jin (성균관대학교 기계공학부)
Publication Information
Transactions of the Korean Society of Mechanical Engineers A / v.29, no.5, 2005 , pp. 754-761 More about this Journal
Abstract
The 40\% of wall thickness criterion which has been used as a plugging rule of steam generator tubes is applicable only to a single cracked tube. In the previous studies performed by authors, several global failure prediction models were introduced to estimate the failure loads of steam generator tubes containing two adjacent parallel axial through-wall cracks. These models were applied for thin plates with two parallel cracks and the COD base model was selected as the optimum one. The objective of this study is to verify the applicability of the proposed optimum global failure prediction model for real steam generator tubes with two parallel axial through-wall cracks. For the sake of this, a series of plastic collapse tests and finite element analyses have been carried out fur the steam generator tubes with two machined parallel axial through-wall cracks. Thereby, it was proven that the proposed optimum failure prediction model can be used as the best one to estimate the failure load quite well. Also, interaction effects between two adjacent cracks were assessed through additional finite element analyses to investigate the effect on the global failure behavior.
Keywords
Steam Generator Tube; Plastic Collapse; Failure Prediction Model; Parallel Multiple Cracks; Interaction Effect;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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