Fatigue curves

[caviac]

Hi all,
do someone know where I can download some S-N curves for fatigue (Wohler curves) ?
Just some examples like one or two steels, one or two aluminium...etc

Thanks.

Caviac

 

[Irwin]

What is necessary?

Forexample for St37: sd=140 MPa
k=11,4
Nd=2*10^6

Irwin

 

[caviac]

Thanks for your response Irwin.
I would like to know if there an internet site where I can download S-N curves of basic materials as examples.
But it would be great if someone could give us examples with S-N curves they have.

Could u detail what are the sd,k,Nd parameters ?

Thx

Caviac

 

[KSshopper]

Mil-HDBK-5 has S-N curves for various aerospace materials:

http://www.grantadesign.com/cgi-bin/stat-tree.cgi?src=MIL5-H.xml

If these don't work you'll have to go to the library and look at ASTMs

 

[caviac]

Thanks for you contribution.
Great.

Caviac

 

[caviac]

philcondit,
The chapter9 has only the 9.1 section...but S-N curves are behind this point.
I didn't find a SN curve in the previous chapters... do you have some explanation ?

Thanks

Caviac

 

[DRDearth]

Cavic,

Seach for MIL-HDBK-5 on the internet. Or search material supplier sites.

David Dearth
Applied Analysis & Technology

David R. Dearth, P.E.
Applied Analysis & Technology
E-mail "AppliedAT@aol.com"