A direct modeling calculation method was developed to improve the accuracy of metal fatigue life estimates. The procedures were developed for the evaluation of once-through steam generator tubes, but were intended to be generally applicable. Random thermal boundary conditions were first simulated, with specific consideration given to the cases of transition boiling and fluctuating coolant inlet temperatures. Subsequently, transient heat transfer rates were determined and wall stresses due to pressure and temperature oscillations were calculated. The resultant wall temperature and stress oscillation data were statistically analyzed to provide the effective parameters used to estimate the metal fatigue.
Issue Section:
Research Papers
1.
Andreyev, P. A., Gremilov, D. I., and Fedorovice, E. D., 1965, “Nuclear Power Plant Heat Exchangers,” Sudostroyeniye, Leningrad, Russia.
2.
Bendat, J. S., and Piersol, A. G., 1971, Random Data: Analysis and Measurement Procedure, A Wiley—Interscience Publication, New York, NY.
3.
Collins, J. A., 1981, Failure of Materials in Mechanical Design. Analysis, Prediction, Prevention, A Wiley—Interscience Publication, New York, NY.
4.
Chiang
T.
France
D. M.
Bump
T. R.
1977
, “Calculation of Tube Degradation Induced by Dryout Instability in Sodium-Heated Steam Generators
,” Nuclear Engineering Design
, Vol. 41
, No 2
, pp. 181
–191
.5.
Kao
T. T.
Cho
S. M.
Pai
D. H.
1982
, “Thermal Modelling of Steam Generator Tubing under CHF-induced Temperature Oscillations
,” International Journal of Heat Mass Transfer
, Vol. 25
, No 6
, pp. 781
–790
.6.
Klevtsov, I., and Tugov, A., 1989, “Remaining Life Estimation for Materials Probabilistic Stress Oscillations Using Loading Process’s Statistical Parameters,” Trans. of Tallinn Technical University, No. 692, pp. 57–67.
7.
Klevtsov, I., and Ka¨a¨r, H., 1992, “Calculation of Once through Steam Generator Tube Fatigue Life in Transition Boiling Zone,” Recent Advances in Heat Transfer, Elsevier, Amsterdam, Holland, pp. 1241–1251.
8.
Manson
S. S.
Halford
G. R.
1986
, “Re-examination of Cumulative Fatigue Damage Analysis—an Engineering Perspective
,” Engineering Fracture Mechanics
, Vol. 25
, No 5/6
, pp. 539
–571
.9.
Sudakov, A., and Trofimov, A., 1989, “Temperature Oscillations and Fatigue Life of Energy Equipment Elements,” Energoatomizdat, Leningrad, Russia, pp. 176.
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