A fatigue life calculation method for structural elements made of D16CzATW aluminium alloy

• Autorzy: Szala J. , Szala G.
• Języki publikacji: EN

Abstrakty

EN

In the calculating of fatigue life of structural elements the methods based on hypotheses of fatigue damage summation are commonly applied. In using the methods, apart from choice of an appropriate hypothesis, it is necessary to know a loading spectrum which usually constitutes a set of sinusoidal cycles of variable parameters (Sa, Sm), as well as fatigue characteristics in the form of Wöhler fatigue diagram, as a rule. Knowledge of the above mentioned data is low during structural design process as designed material objects and possibility of performing measurements are lacking. Hence in this work a calculation method of fatigue life of structural elements, based on the relations between fatigue life diagrams determined in constant-amplitude conditions (Wöhler diagrams) and those obtained under programmed or random loads, is described. The proposed method was experimentally verified by using results of fatigue tests on structural elements made of D16CzATW aluminium alloy.

Słowa kluczowe

EN

fatigue life; tructutral elements; D16CzATW aluminium alloy

• Wydawca: Gdańsk University of Technology, Faculty of Ocean Engineering & Ship Technology
• Czasopismo: Polish Maritime Research
• Rocznik: 2010
• Tom: nr 3
• Strony: 8--17
• Opis fizyczny: Bibliogr. 18 poz., rys., tab.

Twórcy

autor

Szala J.

autor

Szala G.

• Faculty of Mechanical Engineerig, University of Technology and Life Science, Prof. S. Kaliskiego 7 85-763 Bydgoszcz, POLAND,

Bibliografia

• 1. Manson S.S.,Halford G.R.: Re-Examination of Cumulative Fatigue Damage Analysis – an Engineering Perspective. Engineering Fracture Mechanics, Vol.25, No. 5/6, 1986
• 2. Szala J., Boroński D.: Material fatigue state assessment in diagnostics of machines and devices (in Polish). Wydawnictwo ITE-PIB (Publishing House of Institute of the Technology of the Exploitation - State Research Institute), Bydgoszcz, 2008
• 3. Sevensson T., Johannesson P., de Mare J.: Fatigue life prediction based on variable amplitude tests-specific applications. International Journal of Fatigue, 27, 2005
• 4. Liu Y., Mahadevans S.: Stochastic fatigue damage modeling under variable amplitude loading. International Journal of Fatigue, 29, 2007
• 5. Buch A.: Prediction of the comparative fatigue performance for realistic loading distributions. Prog. Aerospace Sci. Vol. 33, 1997
• 6. Sonsino C.M.: Fatigue testing under variable amplitude loading. International Journal Fatigue, 29, 2007
• 7. Kocańda S., Szala J.: Essentials of fatigue calculations (in Polish). PWN (State Scientific Publishing House), Warsaw, 1997
• 8. Soprotivlenie ustalosti metalom i splavov. Kiev Naukowe Dumka, 1987
• 9. Boyer H. E.: Atlas of Fatigue Curves. American Society for Metals (ASM), Ohio, 2003
• 10. Szala J.: Fatigue life assessment of machines under random and programmed loading conditions (in Polish). Monograph, Mechanika 22, Wydawnictwo ATR (Publishing House of Technical Agricultural Academy), Bydgoszcz, 1980
• 11. Lehman R.: Über die Gültigkeit der Hypothese der Linearen Schadens – akumulation. Maschinenbautechnik 5, 1970
• 12. Haibach E.: Probleme der Betriebsfestigkeit von metalischen Konstruktionsteilen. VDI- Z133, 1971, Nr 5, 1.297/403
• 13. Osterman H.: Die Lebensdauerabschätzung bei Sonderkollektiven. LBF-Bericht Nr TB-80, 1968
• 14. Haibach E.: Betriebs-Festigkeit. VDI Verlag GmbH, D・seldorf, 1989
• 15. Fricke W., Petershagen, Paetzold H.: Fatigue Strength of Ship Structures, Part I: Basic Principles. GL-Technology, Information from Germanischer Lloyd Group, Nr 1/97, Hamburg, 1997
• 16. Fricke W., Petershagen, Paetzold H.: Fatigue Strength of Ship Structures, Part II: Examples. GL-Technology, Information from Germanischer Lloyd Group, Nr 1/98, Hamburg,1998
• 17. Szala J.: On a fatigue calculation method for structural elements under stochastic loading conditions (in Polish). Archiwum Budowy Maszyn (Archive of Machinery Engineering), Vol. XXIX, No. 3 4, 1982
• 18. Szala J.: Selected fatigue-life problems of elements of ship machines and devices (in Polish). Proc. the Jubilee Scientific Conference: Research & Development – a chance for Polish shipbuilding industry, Ship Design and Research Centre, Gdańsk, 2001.