13.3 Field Blast Test
449
0
100000 200000 300000 400000 500000
0
1000
2000
3000
4000
5000
Amplitude (m/s
2
)
Frequency (Hz)
NRC-1-A 1
(200,4235)
(13811,1463)
(149719,548)
0
100000 200000 300000 400000 500000
0
500
1000
1500
2000
2500
3000
3500
Amplitude (m/s
2
)
Frequency (Hz)
NRC-2-A 1
400 3030
16830 1178
150470 445
172310 123
(a)
(b)
0
100000 200000 300000 400000 500000
0
1000
2000
3000
4000
5000
6000
7000
(150129,864
Amplitude (m/s
2
)
Frequency (Hz)
NRC-3-A 1
(998,6360)
(127370,214
(208424,147
(172090,179
0
100000 200000 300000 400000 500000
0
1000
2000
3000
4000
5000
Ampitude (m/s
2
)
Frequency (Hz)
UHPCC-1-A 1
(7034,4617)
(151326,1332)
(215233,411)
(300442,227)
(c)
(d)
0
100000 200000 300000 400000 500000
0
500
1000
1500
2000
2500
Ampitude (m/s
2
)
Frequency (Hz)
UHPCC-1-A 2
(3806,2112)
(149839,1592)
(208133,540)
(299879,147)
0
100000 200000 300000 400000 500000
0
1000
2000
3000
4000
5000
Ampitude (m/s
2
)
Frequency (Hz)
UHPCC-1-A 3
(3798,4753)
(113554,1326)
(128148,771)
(241903,286)
(e)
(f)
Fig. 13.8 FFT spectrum of specimens under explosions