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Damage identification in a multilevel structure using empirical mode decomposition
Mallikarjuna Reddy, D1, Praveen Krishna, I.R2.
The use of the method of Empirical Mode Decomposition (EMD) is explored
for the detection of changes in the structural response data of multi-level
structure investigated experimentally. A three level structure is excited using a
band limited white noise covering initial ten natural frequencies. Damage to the
structure is simulated by giving impulse on a level. Firstly adopt EMD
technique to decompose the response signal of structure vibration into several
mono-component signals called Intrinsic Mode Functions (IMF), which is used
to indicate the presence of location with spike of a damaging event in a
structure monitored continuously. Also investigated the effectiveness of the
EMD method with noisy data signals are added some percentage of noise to the
excitation source and proved that EMD technique is able to detect the damage
instant in the structure. From the analysis proved that the EMD method is
capable of identifying damage presence and location, if the structure is
monitored on a continuous basis and the damage occurs suddenly.
Affiliation:
- Vellore Institute of Technology University, India
- Indian Institute of Space Science and Technology, India
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Indexation |
Indexed by |
MyJurnal (2019) |
H-Index
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0 |
Immediacy Index
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0.000 |
Rank |
0 |
Indexed by |
Scopus (SCImago Journal Rankings 2016) |
Impact Factor
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- |
Rank |
Q3 (Engineering (miscellaneous)) |
Additional Information |
0.193 (SJR) |
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