276
Y. Zhang et al.
Fig. 23.6 Distribution of peak frequency and center frequency for the two coating systems [26]
and 23.6 illustrated the differences in energy, event count rate and peak frequency
distribution, respectively. Because of the better deformation ability of stainless steel,
the signal has lower energy, lower event count rate, and different distribution of
frequency, compared with superalloy substrate.
23.4.3 AE Combined with Other Tools
Methods such as DIC (Digital image correlation) were also used as evidence in the
study of the destruction process of coating materials.
Finite element analysis is a commonly used mechanical analysis tool. The residual
stress obtained by finite element analysis can be used to obtain the location of the
earliest failure from the perspective of mechanics. Moreover, the internal stress in
different failure stages is also very helpful to judge the failure process [27].
Y. Zhang et al.
Fig. 23.6 Distribution of peak frequency and center frequency for the two coating systems [26]
and 23.6 illustrated the differences in energy, event count rate and peak frequency
distribution, respectively. Because of the better deformation ability of stainless steel,
the signal has lower energy, lower event count rate, and different distribution of
frequency, compared with superalloy substrate.
23.4.3 AE Combined with Other Tools
Methods such as DIC (Digital image correlation) were also used as evidence in the
study of the destruction process of coating materials.
Finite element analysis is a commonly used mechanical analysis tool. The residual
stress obtained by finite element analysis can be used to obtain the location of the
earliest failure from the perspective of mechanics. Moreover, the internal stress in
different failure stages is also very helpful to judge the failure process [27].