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Shock and Vibration
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2017
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Article
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Tab 1
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Research Article
Damage Identification of a Derrick Steel Structure Based on the HHT Marginal Spectrum Amplitude Curvature Difference
Table 1
Damage condition of the derrick steel structure.
Condition
Damage degree
Damage type
Damage position
1
5%
Single damage
16
2
20%
10
3
30%
5
4
5%
Double damage
8, 14
5
10%
5, 13
6
5%, 10%
5, 13