dc.contributor.author |
Barai, Sudhir Kumar |
|
dc.date.accessioned |
2021-11-27T04:12:50Z |
|
dc.date.available |
2021-11-27T04:12:50Z |
|
dc.date.issued |
2014 |
|
dc.identifier.uri |
https://www.koreascience.or.kr/article/JAKO201404260596596.page |
|
dc.identifier.uri |
http://dspace.bits-pilani.ac.in:8080/xmlui/handle/123456789/3656 |
|
dc.description.abstract |
This paper presents the processing of nonlinear features associated with a damage event by quadratic time-frequency distributions for damage identification in a frame structure. A time-frequency distribution is a function that distributes the total energy of a signal at a particular time and frequency point. As the occurrence of damage often gives rise to non-stationary, nonlinear structural behavior, simultaneous representation of the dynamic response in the time-frequency plane offers valuable insight for damage detection. The applicability of the bilinear time-frequency distributions of the Cohen class is examined for the damage assessment of a frame structure from the simulated acceleration data. It is shown that the changes in instantaneous energy of the dynamic response could be a good damage indicator. Presence and location of damage can be identified using Choi-Williams distribution when damping is ignored. However, in the presence of damping the Page distribution is more effective and offers better readability for structural damage detection. |
en_US |
dc.language.iso |
en |
en_US |
dc.publisher |
Techno Press |
en_US |
dc.subject |
Civil Engineering |
en_US |
dc.subject |
Damage detection |
en_US |
dc.subject |
Nonlinear features |
en_US |
dc.subject |
Frame structure |
en_US |
dc.subject |
Time-frequency distributions |
en_US |
dc.title |
Damage assessment of frame structure using quadratic time-frequency distributions |
en_US |
dc.type |
Article |
en_US |