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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2014.10
- 수록면
- 66 - 73 (8page)
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이 논문의 연구 히스토리 (5)
2014
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This study was considered to occur the local wall thinning at elbow which is flowing the steam and high-pressure water of high-temperature. The angle of elbow is θ=45°and 67.5°. The damage behaviors of inner or outer wall thinning elbow under internal pressure were calculated by FEA(finite element analysis). We compared the simulated results by FEA with experimental data. The FEA results are as follows: In the FEA results of three types of wall thinning ratio, the circumferential and longitudinal stresses show the similar values regardless of the angle of elbow, respectively. The circumferential strain was greater at elbow of small angle, but the longitudinal strain was nearly same. The FEM stress of outer wall thinning elbow was slightly higher than that of the inner wall thinning elbow, and strain was also slightly higher. In the experiments, the circumferential strain was increased with the increase in the internal pressure, and increased rapidly on about 0.2% of strain. The longitudinal strain was small. The strain at break was much smaller than 0.2%. In the relation between pressure and eroded ratio, the criteria that can be used safely under operating pressure and design pressure were obtained. The results of FEA were in relatively good agreement with those of the experiment.
목차
Abstract
1. 서론
2. 시험편 및 실험방법
3. 결과 및 고찰
4. 결론
Reference
참고문헌 (11)
참고문헌 신청
1. [학술지(정기간행물)] - K. W. Nam / 2002 / Crack opening behavior of penetrated crack under cyclic or monotonic loading / Nuclear Engineering and Design 214 : 221 ~ 229
2. [학술지(정기간행물)] - Y. S. Yoo / 1999 / The Evaluation of LBB Behavior and Crack Opening Displacement on Statically Indeterminate Piping System Subjected to Monotonic Load / Journal of High Pressure Institute of Japan 37 : 418 ~ 426
3. [학술지(정기간행물)] - S. Miyazono / 1987 / Pipe rupture accident on Surry Nuclear Power Plant / Japan Atomic Energy Agency 29 : 952 ~ 969
4. [학술지(정기간행물)] - K. Hasegawa / 1991 / Acceptance Criteria of Local Wall Thinning in Carbon Steel Pipe Subjected to Axial Force / Transactions of the Japan Society of Mechanical Engineers Series A 57 : 1470 ~ 1474
5. [학술지(정기간행물)] - J. F. Mathonet / 1995 / Belgian Methodology for Evaluation of Erosion Corrosion Phenomena in Unitsl；2；3&4 of the Doel Nuclear Power Plant(NPP) / ASME PVP 304 : 393 ~ 399
2. [학술지(정기간행물)] - Y. S. Yoo / 1999 / The Evaluation of LBB Behavior and Crack Opening Displacement on Statically Indeterminate Piping System Subjected to Monotonic Load / Journal of High Pressure Institute of Japan 37 : 418 ~ 426
3. [학술지(정기간행물)] - S. Miyazono / 1987 / Pipe rupture accident on Surry Nuclear Power Plant / Japan Atomic Energy Agency 29 : 952 ~ 969
4. [학술지(정기간행물)] - K. Hasegawa / 1991 / Acceptance Criteria of Local Wall Thinning in Carbon Steel Pipe Subjected to Axial Force / Transactions of the Japan Society of Mechanical Engineers Series A 57 : 1470 ~ 1474
5. [학술지(정기간행물)] - J. F. Mathonet / 1995 / Belgian Methodology for Evaluation of Erosion Corrosion Phenomena in Unitsl；2；3&4 of the Doel Nuclear Power Plant(NPP) / ASME PVP 304 : 393 ~ 399
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