European FITNET Fitness-for-Service Procedure ... - Congrex
European FITNET Fitness-for-Service Procedure ... - Congrex
European FITNET Fitness-for-Service Procedure ... - Congrex
You also want an ePaper? Increase the reach of your titles
YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.
Principle of residual strength prediction<br />
CDF = crack driving <strong>for</strong>ce<br />
K J<br />
δ 5<br />
F 1<br />
F 2<br />
F 3 = F max<br />
a 0<br />
1<br />
3<br />
2<br />
Δa cr<br />
R-curve<br />
4<br />
CDF<br />
Crack length, a<br />
Crack extension, Δa<br />
K J = K I ⋅ [ f (Lr ) ] −1<br />
δ5 =δ5e ⋅ [ f (Lr) ] −2<br />
<strong>FITNET</strong><br />
FFS<br />
Crack extension, Δa<br />
ESA/ESTEC Workshop on Fracture Control, Noordwijk, NL, 9-10 Feb. 2009 M. Kocak, V. Uz, GKSS 21<br />
F max<br />
Load, F<br />
L r =<br />
1<br />
2<br />
3<br />
Δa cr<br />
or CTOD δ 5<br />
F<br />
?<br />
4<br />
F Y (R p 0.2,a)
Change language