Evaluation of Fatigue Crack Growth Characteristics Considering Crack Closure Phenomenon in Weldment of Multi-Pass Welded Pipe

- Journal title : Transactions of the Korean Society of Mechanical Engineers A
- Volume 25, Issue 5, 2001, pp.797-804
- Publisher : The Korean Society of Mechanical Engineers
- DOI : 10.22634/KSME-A.2001.25.5.797

Title & Authors

Evaluation of Fatigue Crack Growth Characteristics Considering Crack Closure Phenomenon in Weldment of Multi-Pass Welded Pipe

Kim, Cheol-Han; Jo, Seon-Yeong; Bae, Dong-Ho;

Kim, Cheol-Han; Jo, Seon-Yeong; Bae, Dong-Ho;

Abstract

To obtain representative fatigue crack growth characteristic curve in residual stress field, fatigue crack growth test was carried out at various stress ratio and fatigue crack growth characteristic curve was represented using crack closure concept. Obtained results are as follows;K(sub)op/K(sub)max was independent of K(sub)max when R was lower than 0.5 and crack closure phenomenon was not observed when R is higher than 0.5. therefore neglecting crack closure behaviour, actual fatigue crack growth rate can be underestimated. Thus, considering crack closure phenomenon, fatigue crack growth characteristics curve of A 106 Gr B Steel weldment can be effectively estimated.

Keywords

Welding Residual Stress;Crack Closure;Crack Opening Point;Stress Intensity Factor by Welding Residual Stress;Effective Stress Intensity Factor Range;K;

Language

Korean

Cited by

References

1.

Masubuchi, K., 1980, 'Analysis of Welded Structure,' Pergamon Press, pp. 148-188

2.

Kapadia, B. M., 1982, 'Influence of Residual Stresses on Fatigue Crack Propagation in Electroslag Welds,' ASTM STP 648, pp. 244-260

3.

Wu, X. R., 1984, 'The Effect of Welding Residual Stress on Brittle Fracture of Plate with Surface Cracks,' Engineering Fracture Mechanics, vol. 19, No. 3, pp. 427-439

4.

Shi, Y. W., 1990, 'Effect of Welding Residual Stress on Fatigue Crack Growth Behaviour in Butt Welds of a Pipeline Steel,' Engineering Fracture Mechanics, Vol. 36, No. 6, pp. 893-902

5.

Murakami, Y., 1987, 'Stress Intensity Fractors handbook,' Pergamon Press, pp. 9-10

6.

Banerjee, E., 1984, 'A Review of Crack Closure,' AFWAL-TF-B4-4031, University of Dayton, pp. 15-47

7.

Kim, C. H.,, Bae, D. H., Cho, S. Y. and Kim, B. K., 2000, 'Welding Residual Stress Analysis and Fatigue Crack Growth Characteristics of Multi-pass Welded Pipe Weldment,' The 4th International Conference on Fracture & Strength of Solids, pp. 1345-1355

8.

1993, Mechanical Behavior of Materials, Prentice-Hall International, pp. 456-464

9.

Elber, W., 1971, 'The Signification of Fatigue Crack Closure,' ASTM STP 486, pp. 230-242

10.

Katcher, M., Kaplan, M., 1974, 'Effect of R-Factor Crack Closure on Fatigue Crack Growth for Aluminum and Titanium Alloy,' ASTM STP 559, pp. 264-282

11.

Masuba, J. K., Radon, J. C., 1981, 'Fatigue Crack Growth at Low Stress Intensities,' Proceedings of Fatigue 81, pp. 106-116

12.

Sunder, R., Dash, P. K., 1983, 'Measurement of Fatigue Crack Closure Through Electron Microscopy,' International Journal of Fatigue, pp. 97-105

13.

Bucci, R. J., Yu, W., 1989, 'Fatigue Crack Propagation in ARALL Laminates Measurements of the Effect of Crack-Tip Shielding from Crack Bridging,' Engineering Fracture Mechanics Elmsfor, NY, Pergamon Press, Inc., Vol. 32, No. 3, pp. 361-377

14.

이용복, 정진성, 조남익, 1996, 'SS330 용접재에서 재분포 잔류응력 및 균열닫힘영향을 고려한 피로거동에 관한 연구,' 대한기계학회논문집(A), Vol. 20, No. 7, pp. 2234-2245

15.

Todd, J. A., Chen, L.Yankov, E. Y., Mostovoy, S., 1997, 'Crack Closure Effects of Fatigue Crack Growth Thresholds and Remaining Life in an HSLA Steel,' JPVT, pp. 37-44