Structural Integrity Evaluation of Steam Generator Tube with Two Parallel Axial Through-Wall Cracks

문성인; 김영진; 송명호; 박윤원; 이진호

추천

검색

자료유형: 학술저널

저자정보: 문성인 김영진 송명호 박윤원 이진호

저널정보: 한국원자력학회 Nuclear Engineering and Technology Nuclear Engineering and Technology 제36권 제4호

발행연도: 2004.1

수록면: 327 - 337 (11page)

이용수

📌

연구주제

📖

연구배경

🔬

연구방법

🏆

연구결과

초록· 키워드

오류제보하기

It is commonly required that tubes with defects exceeding 40% of wall thickness in depthshould be plugged; however, this criterion is too conservative for some locations and for sometypes of defects. Many studies have been done with the aim of developing an alternativeplugging criteria, and these studies have shown that steam generator tubes with a certain rangeof axial through-wall cracks could remain in service without any safety or reliability problems.However, these studies have been limited, thus far, to consideration of single cracked tubes,necessitating a study on multiple cracks, which are commonly found.A crack coalescence model applicable to steam generator tubes with two collinear axialthrough-wall cracks was proposed in the previous study. In this paper, the investigation isextended to the parallel axial cracks spaced in a circumferential direction, because parallel axialcracks are more frequently detected during in-service inspections than collinear axial cracks.Interaction effects between two parallel cracks are evaluated by performing elastic and elastic-plastic finite element analyses.

#coalescence criterion #interaction effect #steam generator tube #plastic collapse #plugging #rupture #coalescence criterion #interaction effect #steam generator tube #plastic collapse #plugging #rupture

참고문헌 (20)

참고문헌 신청

/ 1973 / Failure Stress Levels of Flaws in Pressurized Cylinders : 461 ~ 481

/ 1976 / Ductile Failure Theories for Pressurized Pipes and Containers 4

/ 1976 / Regulatory guide 1.121, Bases forPlugging Degraded PWR Steam Generator Tubes

/ 1985 / Growth Evaluation of Fatigue Cracks from Multiple Surface Flaws and miyazo 27

/ 1986 / Growth Evaluation of Fatigue Cracks from MultipleSurface Flaws and miyazo 28 : 258 ~ 265

함께 읽어보면 좋을 논문

논문 유사도에 따라 DBpia 가 추천하는 논문입니다. 함께 보면 좋을 연관 논문을 확인해보세요!