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Mathematical Problems in Engineering
/
2020
/
Article
/
Fig 4
/
Research Article
Guided Wave Propagation for Monitoring the Rail Base
Figure 4
The wave structures with the center frequency 90 kHz. (a) Mode
with
c
p
= 2534 m/s and
c
g
= 3340 m/s. (b) Mode
with 2950 m/s
c
g
= 3190 m/s.
(a)
(b)