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Mathematical Problems in Engineering
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Mathematical Problems in Engineering
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2014
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Article
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Tab 5
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Research Article
Measurement of International Roughness Index by Using
-Axis Accelerometers and GPS
Table 5
Values of power spectral density for different speeds.
Speed (km/h)
20
30
40
50
60
Power spectral density
20.9189
41.7322
68.044
115.6324
130.4095