Of course, i know that curves will be change with surface finishing, temperature itp.. If you can, please post this Wohler Curve which you talking about, i will be grateful. If you don't knoiw how post image, please insert the direct link to file on web. Thanks, kaka_90
These graphs are for GJS 600 and they are the standard curves: - Wohler standard specimen Ã˜7.5 mm - 50% safe accuracy - polished surfaces - Temperature 20 Â°C
In the graph the terms means: - FLESSIONE = BENDING - TORSIONE = TORSION (this was easy to understand ) - SFORZO NORMALE = AXIAL LOAD Please let me know if I was clear
I've found a site that might be of some help to you. It is the Ductile Iron Societies web page for engineers. Here is the link http://ductile.org/didata/Section3/3part1.htm#top
Thanks everybody for help. PierArg your fatigue curve is ok, but i must recalculate my problem couple of times then i have a guarante that it is good. T-Harv, i saw that webpage a month ago, but it is not graphs that the interested me. I found a book called "Analitycal Strenght Assessment" - it is FKM (Deutchland) publishing house - there is a method to make a Wohler curve for any materials. I only must study this prolem. Anyway, thanks everybody for your invaluable help. Pozdrawiam KKA
Hello Kaka, as I wrote some posts ago, Shigley and Juvinall in their books discuss about the Wohler curve construction. You can easily refer to one of them.