Auteur Dionisio Bernal
Documents disponibles écrits par cet auteur (10)
Affiner la recherche
Article : texte imprimé
When two closely spaced eigenvalues merge the associated eigenvectors can either (1) form a subspace where every vector in the span is an eigenvector or (2) coalesce into a single eigenvector. In the second alternative the repeated eigenvalue is[...]
Article : texte imprimé
Conditioning difficulties often thwart the characterization of damage by model updating. Methods that can provide information on damage location without explicit selection of free parameters are important for improving the likelihood of success.[...]
Article : texte imprimé
Y. Gao, Auteur ; B. F. Spencer, Auteur ; Dionisio Bernal, Auteur |In recent years, numerous approaches have been proposed for detecting damage in structures, in which the flexibility-based damage locating vector (DLV) method is one of the promising techniques. By computing a set of load vectors from the change[...]
Article : texte imprimé
Dionisio Bernal, Auteur ; Gunes, Burcu, Auteur ; Ghanem, Roger G., Éditeur scientifique |A flexibility based damage characterization technique is described and its performance is examined in the context of Phase 1 of the benchmark study developed by the IASC-ASCE SHM Task Group. Noteworthy features of the analytical development are:[...]
Article : texte imprimé
Dionisio Bernal, Auteur ; Joel P. Conte, Éditeur scientifique |Localization of damage from changes in flexibility in structures identified from operational or ambient vibration has long been hindered by the fact that the flexibility cannot be extracted exclusively from output signals. This obstacle is subst[...]
Article : texte imprimé
A method to interrogate changes in transfer matrices regarding damage localization is extended to cases where these changes cannot be experimentally obtained because the input is not known deterministically. The extension is realized by noting t[...]
Article : texte imprimé
Dionisio Bernal, Auteur ; Ghanem, Roger G., Éditeur scientifique |When the identification of a linear system is carried out without deterministic input information the scaling constants that connect the eigensolution to the matrices of the physical system are not determined. One way to generate information to [...]
Article : texte imprimé
Central to the discrete to continuous (d2C) time transfer of state space models is the selection of an intersample parameterization of the input. At present the zero-order hold is widely used but the premise is unnecessarily crude in the typical[...]
Article : texte imprimé
Central to the discrete to continuous (d2C) time transfer of state space models is the selection of an intersample parameterization of the input. At present the zero-order hold is widely used but the premise is unnecessarily crude in the typic[...]
Article : texte imprimé
Eric M. Hernandez, Auteur ; Dionisio Bernal, Auteur |This paper presents an observer designed under the assumption that differences between predicted and measured outputs arise from discrepancies between the real structural system and the nominal model used to represent it. The observer gain is in[...]
