Structural health monitoring of high voltage electrical switch ceramic insulators in seismic areas
dc.contributor.author | REBILLAT, Marc |
dc.contributor.author | BARTHES, Clément |
dc.contributor.author | MOSALAM, Khalid M. |
dc.contributor.author
hal.structure.identifier | MECHBAL, Nazih
|
dc.date.accessioned | 2014 |
dc.date.available | 2014 |
dc.date.issued | 2014 |
dc.date.submitted | 2014 |
dc.identifier.uri | http://hdl.handle.net/10985/8233 |
dc.description.abstract | High voltage electrical switches are crucial components to restart rapidly the electrical network right after an earthquake. But there currently exists no automatic procedure to check if these ceramic insulators have suffered after an earthquake, and there exists no method to recertify a given switch. To deploy a vibration-based structural health monitoring method on ceramic insulators a large shake table able to generate accelerations up to 3 g was used. The idea underlying the SHM procedure proposed here is to monitor the apparition of cracks in the ceramic insulators at their early stage through the change of the resonant frequency of the first mode of the structure and the non-linearity that they generate in its dynamic response. The Exponential Sine Sweep Method is used to estimate a nonlinear model of the structure under test from only one dynamic measurement. A classic linear damage index (DI) based on the variation of the frequency of the first mode is compared to an original nonlinear one using the ratio of the amplitudes of the third harmonic and the fundamental frequency. Results show that both DIs increase monotonically with the number of solicitations, thus validating the use of the nonlinear DI. It is also shown that the nonlinear DI presented here seems more sensitive than the linear one. |
dc.language.iso | en |
dc.rights | Pre-print |
dc.subject | Structural health monitoring |
dc.subject | ceramic materials |
dc.subject | nonlinear approach |
dc.title | Structural health monitoring of high voltage electrical switch ceramic insulators in seismic areas |
dc.typdoc | Communication avec acte |
dc.localisation | Centre de Paris |
dc.subject.hal | Sciences de l'ingénieur: Electronique |
dc.subject.hal | Sciences de l'ingénieur: Mécanique: Matériaux et structures en mécanique |
dc.subject.hal | Sciences de l'ingénieur: Mécanique: Mécanique des structures |
dc.subject.hal | Sciences de l'ingénieur: Mécanique: Vibrations |
ensam.audience | Internationale |
ensam.conference.title | 7th European Workshop on Structural Health Monitoring |
ensam.conference.date | 2014-07-08 |
ensam.country | France |
ensam.title.proceeding | Proceedings of the 7th European Workshop on structurla Health Monitoring |
ensam.page | 1--8 |
hal.identifier | hal-01001841 |
hal.version | 1 |
hal.submission.permitted | updateMetadata |
hal.status | accept |