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This paper describes the application of proper orthogonal decomposition (POD) method in the context of structural health monitoring of a smart structure, bonded with a distributed piezoceramic patches array. Using measurements given by the distributed sensors, we propose a damage index (DI) based on change in angle between subspaces. Furthermore, from(More)
In this communication, we present a high resolution tactile plate that can localize one or two contact fingers. The localization principle is based on Lamb wave absorption. Fingers' contact will generate absorption signals while Lamb waves are propagating in a thin finite copper plate. These signals can be related to the contact positions and can be(More)
Most of the humanoid robots are covered with curved thin shells. To have a sensitive shell on the robot, normally we need to add an extra layer of electrodes or sensors. In this paper, we realized a tactile shell based on a Lamb wave diffraction method. Surface-contact sensing is calibrated and tested with a finger; the spatial resolution is 17 × 13(More)
Precise identification of structural properties is a vital step towards detection and localization of damage in structures. In this paper the problems of improving accuracy of modal parameter estimates and automatic elimination of spurious modes in covariance driven output-only subspace identification method are addressed. An iterative procedure is(More)
Co-encadrement de la thèse : François MALBURET To my parents, to my brother, my sister-in-law, my nephews and niece. ii iii-Acknowledgments-I would like to thank the members of my examining committee, Prof. Aubourg for their time. I would like to express my sincere gratitude towards Dr. Rogelio Ferrer from Eurocopter France for his guidance, advice and(More)
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