Warianty tytułu
Języki publikacji
Abstrakty
The study presents two approaches to plotting an S-N curve based on the experimental results. The first approach is commonly used by researchers and presented in detail in many studies and standard documents. The model uses a linear regression whose parameters are estimated by using the least squares method. A staircase method is used for an unlimited fatigue life criterion. The second model combines the S-N curve defined as a straight line and the record of random occurrence of the fatigue limit. A maximum likelihood method is used to estimate the S-N curve parameters. Fatigue data for C45+C steel obtained in the torsional bending test were used to compare the estimated S-N curves. For pseudo-random numbers generated by using the Mersenne Twister algorithm, the estimated S-N curve for 10 experimental results plotted by using the second model, estimates the fatigue life in the scatter band of the factor 3. The result gives good approximation, especially regarding the time required to plot the S-N curve
Słowa kluczowe
Wydawca
Czasopismo
Rocznik
Tom
Numer
Opis fizyczny
p.129-137,fig.,ref.
Twórcy
autor
- University of Science and Technology in Bydgoszcz, Al.Prof.S.Kaliskiego 7, 85-796 Bydgoszcz, Poland
autor
- University of Science and Technology in Bydgoszcz, Al.Prof.S.Kaliskiego 7, 85-796 Bydgoszcz, Poland
Bibliografia
- 1. I. Stephens, Ralph, A. Fatemi, R. Stephens, Robert, O. Fuchs, Henry: Metal Fatigue in Engineering (1980), John Wiley and Sons, 2001.
- 2. Z. Dyląg, Z. Orłoś,: Fatigue strength of materials (in Polish), Wydawnictwo Naukowe-Techniczne, 1962.
- 3. S. Kocańda, J. Szala: Basic metods for fatigue calculations (in Polish), (1997)
- 4. M. Kocak, S. Webster, J. Janosch, J., A. Ainsworth, R., R. Koers: FITNET Fitness-for-Service PROCEDURE – FINAL DRAFT MK7, 2006.
- 5. Y.L. Lee, J. Paw, B. Hathaway, Richard, E. Barkey, Mark: Fatigue Testing and Analysis - Theory and Practice, Elsevier Butterworth–Heinemann, 2005.
- 6. J. Schijve : Fatigue of structures and materials, Second Edition , Springer Science+Business Media, 2009.
- 7. P. Strzelecki: Analytical method for determining fatigue properties of materials and construction elements in high cycle life (in Polish), Uniwersytet TechnologicznoPrzyrodniczy w Bydgoszczy, 2014.
- 8. P. Strzelecki, J. Sempruch, K. Nowicki: Accuracy of Analytical-Experimental Method for Determining the Fatigue Characteristics in a Limited Life Region, Solid State Phenom. 224 (2014) 63–68. doi:10.4028/www.scientific. net/SSP.224.63.
- 9. T. Tomaszewski, J. Sempruch: Analysis of size effect in high-cycle fatigue for EN AW-6063, Solid State Phenom. 224 (2015) 75–80. doi:10.4028/www.scientific.net/SSP.224.75.
- 10. PN-H-04325:1976: Fatigue tests of metals -- Basic definition and general guidelines for the preparation of samples and tests, 1976.
- 11. P. Strzelecki, J. Sempruch: Experimental Verification of the Analytical Method for Estimated S-N Curve in Limited Fatigue Life, Mater. Sci. Forum. 726 (2012) 11–16. doi:10.4028/www.scientific.net/MSF.726.11.
- 12. ASTM E-739-91: Standard Practice for Statistical Analysis of Linear or Linearized Stress-Life (S-N) and Strain-Life Fatigue Data, 2006.
- 13. PN-EN-3987: Aerospace series - Test methods for metallic materials - Constant amplitude force-controlled high cycle fatigue testing, 2010.
- 14. ISO-12107: Metallic materials - fatigue testing - statistical planning and analysis of data, 2003.
- 15. F.G. Pascual, W.Q. Meeker: Estimating Fatigue Curves with the Random Fatigue-Limit Model, Technometrics. 41 (1999) 277–290. doi:10.2307/1271342.
- 16. S. Lorén, M. Lundström: Modelling curved S-N curves, Fatigue Fract. Eng. Mater. Struct. 28 (2005) 437–443. doi:10.1111/j.1460-2695.2005.00876.x.
- 17. R Core Team: R: A language and environment for statistical computing, (2015). http://www.r-project.org/.
Typ dokumentu
Bibliografia
Identyfikatory
Identyfikator YADDA
bwmeta1.element.agro-4d4e0178-c080-40c9-87dd-efd5a98a919d