Section 6.0. Examples of Damage Tolerant Analyses
The basic ingredients for damage tolerance analysis are the
residual strength calculation and the crack growth prediction. These two subjects were dealt with in two
previous sections. This section will
show how crack growth and residual strength analysis are combined in a damage
tolerance analysis of an actual structure in the various stages of design. Guidelines will be given on how to
demonstrate compliance with the Airplane Damage Tolerance Design Requirements
of JSSG-2006. The various options to
qualify a structure will be reviewed.
In the next subsection, the general scheme for a
damage-tolerance analysis will be given in the form of a stepwise
procedure. Thereafter the option of
inspectable versus non-inspectable qualification will be considered; the
advantages and disadvantages of each will be summarized. Then an example will be given to show the
consequences of selecting a certain qualification option. Finally, a number of example problems will
be presented to illustrate the application of damage-tolerance analysis.