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How to use small cracks theory to solve fatigue problems???

Submitted by Lang Zhou on

I  really need help with it .Anyone can help me . Thanks a lot . 

There is no simple treatment of short crack theory, but a lot of misunderstandings.  please refer to

The very bizzare story of the
paper: FFEMS-4283 - A simplified "damage ...

 and

the Fatigue lecture by Suo.

Michele Ciavarella, Politecnico di BARI - Italy, Rector's delegate.
http://poliba.academia.edu/micheleciavarella
Editor, Italian Science Debate, www.sciencedebate.it
Associate Editor, Ferrari Millechili Journal, http://imechanica.org/node/7878

Sun, 05/16/2010 - 08:49 Permalink

When I say Suo's lecture, I refer to this   which in the original form contains no reference to short cracks.

However, in my other post which unfortunately grew to large number of comments and is difficult to follow (120 comments!), you do find reference to short cracks.

The best to start from by far in any area of fatigue is Fleck and Asbhy review paper, which I largely comment in my

 The very bizzare story of the
paper: FFEMS-4283 - A simplified "damage ...

including a lots of the original figures.

Here is the reference anyway

Overview no. 112: The cyclic properties of
engineering materials


Acta Metallurgica et Materialia,
Volume 42, Issue 2, February 1994, Pages 365-381

N.A. Fleck, K.J.
Kang, M.F. Ashby

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Michele Ciavarella, Politecnico di BARI - Italy, Rector's delegate.
http://poliba.academia.edu/micheleciavarella
Editor, Italian Science Debate, www.sciencedebate.it
Associate Editor, Ferrari Millechili Journal, http://imechanica.org/node/7878

Sun, 05/16/2010 - 19:07 Permalink