Formulate Number Cycle of Fracture by the Thickness of the Warm Galvanizing Coating on the Fatigue

Subject Areas : Creep, Fatigue and Fracture Mechanic

Kazem  Reza Kashyzadeh ¹ (مدرس دانشگاه)
Alireza  Arghavan ² (Strategic Center for Energy and Sustainable Development, Semnan Branch, Islamic Azad University, Semnan, Iran)

Received: 2015-10-31 Accepted : 2015-10-31 Published : 2015-08-23

Keywords: Fatigue, Thickness of coating, S-N diagram, Warm Galvanizing,

Abstract :

The purpose of this article is to predict the number cycle of fracture on the different thicknesses of the warm galvanizing coating on plated parts using the micron scale. For this study, the abovementioned coating with the thickness of 13 & 19 were coated on standard specimens who were made of CK45 steel under the same conditions. Then, the S-N curve of each sample was attained empirically according to the standard fatigue testing. Using these results, the constant coefficient of statistical fatigue on the parts was calculated. The k ratio was also calculated according to the thickness of warm galvanizing coating using the two methods of Lagrange and Neville Interpolation and finally we offered an equation by which we can estimate the required cycles of fracture by knowing the thickness of coating with each specified stress under fatigue phenomenon. The calculated results significantly corresponded to experimental results. To ensure the accuracy of the research, the results of the two methods were compared with one another.