%I Gruppo Italiano Frattura
%O 19? Convegno Nazionale del Gruppo Italiano Frattura, Milano, Italy, 2-4 July 2007
%P 217-224
%T Are the Paris' law parameters dependent on each other?
%B IGF 19: Atti del XIX convegno nazionale del Gruppo Italiano Frattura 
%X The question about the existence of a correlation between the parameters C and m of the Paris? law is
re-examined in this paper. According to dimensional analysis and incomplete self-similarity concepts
applied to the linear range of fatigue crack growth, a power-law asymptotic representation relating the
parameter C to m and to the governing variables of the fatigue phenomenon is derived. Then, from the
observation that the Griffith-Irwin instability must coincide with the Paris? instability at the onset of rapid
crack growth, the exponents entering this correlation are determined. A fair good agreement is found
between the proposed correlation and the experimental data concerning Aluminium, Titanium and steel
alloys
%D 2007
%L eprints1948
%A Alberto Carpinteri
%A Marco Paggi