Civil Engineering Reference
In-Depth Information
10000
5000
2000
1000
500
200
100
50
Air
200
100
100
200
500
1000
2000
5000
10000
Frequency (Hz)
Figure 3.19
Phase speed of bending waves in concrete slabs of thickness 50, 100, 150 and 200 mm. Thin lines -
calculated using thin plate theory. Thick lines - calculated using Equation
(3.106)
. Horizontal line - acoustic
wave speed in air.
1000
500
10
5
Air
200
2
1
100
50
20
10
100
200
500
1000
2000
5000
10000
Frequency (Hz)
Figure 3.20
Phase speed of bending waves in steel plates of thickness 1, 2, 5 and 10 mm. See also caption of
