Burst pressure estimation of Alloy 690 axial cracked steam generator U-bend tubes using fi nite element damage analysis

• Published in: Nuclear engineering and technology pp. 666 - 676
• Main Authors: 김지석, 김윤재, 이명우, 전준영, 김종성
• Format: Journal Article
• Language: English
• Published: 한국원자력학회 01.02.2021
• Subjects: 원자력공학
• ISSN: 1738-5733; 2234-358X
• DOI: 10.1016/j.net.2020.07.024

This paper presents numerical estimation of burst pressures of axial cracked U-bend tubes, consideringthe U-bending process analysis. The validity of the FE simulations is confirmed by comparing withpublished experimental data. From parametric analyses, it is shown that existing EPRI burst pressureestimation equations for straight tubes can be conservatively used to estimate burst pressures of the Ubendtubes. This is due to the increase in yield strength during the U-bending process. The degree ofconservatism would decrease with increasing the bend radius and with increasing the crack depth. KCI Citation Count: 0