13 Study on Bearing Mechanism of Composite Stiffened Panel …
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13.5.3 Analysis of the Influence of Embedded Delamination
on the Damage of Stringer
Similarly, due to the relatively weak performance of the adhesive film, the premature
debonding between the skin and the stringer reduces the load transferred to the
stringer. Therefore, the influence of different sizes of embedded delamination on the
damage propagation law of the stringer is also weak. It can be seen from Fig. 13.15
below that there is no obvious difference in the damage degree and distribution of
the stringer.
From the above analysis, it can be seen that different sizes of embedded delamination have limited influence on the damage propagation of skin and stringer. The
main reason is that the performance of the adhesive film is relatively weak. Before
the damage of the skin and the stringer, they will be debonding prematurely, which
reduces the load transferred to the stringer.
Taking the embedded delamination of 80 mm × 40 mm as an example, the damage
propagation of each part is shown in Fig. 13.16 below. It can be found that there is
a large degree of debonding when the in-plane initial damage occurs to the skin,
Fig. 13.15 Effect of embedded delamination on damage of stringer
169
13.5.3 Analysis of the Influence of Embedded Delamination
on the Damage of Stringer
Similarly, due to the relatively weak performance of the adhesive film, the premature
debonding between the skin and the stringer reduces the load transferred to the
stringer. Therefore, the influence of different sizes of embedded delamination on the
damage propagation law of the stringer is also weak. It can be seen from Fig. 13.15
below that there is no obvious difference in the damage degree and distribution of
the stringer.
From the above analysis, it can be seen that different sizes of embedded delamination have limited influence on the damage propagation of skin and stringer. The
main reason is that the performance of the adhesive film is relatively weak. Before
the damage of the skin and the stringer, they will be debonding prematurely, which
reduces the load transferred to the stringer.
Taking the embedded delamination of 80 mm × 40 mm as an example, the damage
propagation of each part is shown in Fig. 13.16 below. It can be found that there is
a large degree of debonding when the in-plane initial damage occurs to the skin,
Fig. 13.15 Effect of embedded delamination on damage of stringer