Results 251 to 260 of about 4,075,278 (310)

Output-only Modal Identification

2014
This chapter is focused on the methods for modal parameter estimation from previously acquired and pretreated time histories of the structural response to ambient vibrations. The fundamental assumptions of OMA methods and the basic concepts of structural dynamics models in time and frequency domain are illustrated, pointing out the common mathematical ...
Carlo Rainieri, Giovanni Fabbrocino
openaire   +1 more source

Modal Identification of Bridges Using Mobile Sensors with Sparse Vibration Data

, 2020
Dynamic sensor networks have the potential to significantly increase the speed and scale of infrastructure monitoring.
Soheil Sadeghi Eshkevari, S. Pakzad, M. Takác, T. Matarazzo   +3 more
semanticscholar   +1 more source

Simulation of on-orbit modal identification

Acta Astronautica, 1991
Abstract Modularly designed large orbital systems cannot be tested as a total structure on earth. Size, zero-g design and the existing atmosphere conflict with traditional structural dynamic qualification. In order to avoid the associated problems with terrestrial testing some form of on-orbit testing is likely to be used.
openaire   +3 more sources

Visible-Infrared Person Re-Identification via Homogeneous Augmented Tri-Modal Learning

IEEE Transactions on Information Forensics and Security, 2021
Matching person images between the daytime visible modality and night-time infrared modality (VI-ReID) is a challenging cross-modality pedestrian retrieval problem.
Mang Ye, Jianbing Shen, Ling Shao
semanticscholar   +1 more source

Modal identification using spectral moments

Structural Safety, 1985
Abstract The use of spectral moments has been proposed for estimating natural frequencies of vibration and equivalent viscous modal damping ratios from ambient response measurements of dynamically excited structures. The moments tend to be relatively more stable than spectral ordinates and may be derived from raw, unsmoothed periodograms.
S. Shyam Sunder, Stuart E. Grewatz, Seng Kiong Ting   +2 more
openaire   +1 more source

Cross-Modality Person Re-Identification via Modality-Aware Collaborative Ensemble Learning

IEEE Transactions on Image Processing, 2020
Visible thermal person re-identification (VT-ReID) is a challenging cross-modality pedestrian retrieval problem due to the large intra-class variations and modality discrepancy across different cameras. Existing VT-ReID methods mainly focus on learning cross-modality sharable feature representations by handling the modality-discrepancy in feature level.
Mang Ye, Xiangyuan Lan, Qingming Leng, Jianbing Shen   +3 more
openaire   +2 more sources

Fast Bayesian frequency domain modal identification from seismic response data

Computers & structures, 2019
Modal identification aims at identifying the modal parameters that mainly include natural frequencies, damping ratios and mode shapes. They provide baseline modal properties of objective structures and play an important role in the seismic design ...
Y. Ni, Feng‐Liang Zhang
semanticscholar   +1 more source

Multi-stage semi-automated methodology for modal parameters estimation adopting parametric system identification algorithms

Mechanical systems and signal processing, 2022
In recent years, a new research direction in structural condition assessment has been focusing on developing automated or semi-automated procedures to identify a structure’s modal parameters from its response measurements.
E. M. Tronci, M. Angelis, R. Betti, V. Altomare   +3 more
semanticscholar   +1 more source

Transformations intégrales et identification modale

Comptes Rendus de l'Académie des Sciences - Series IIB - Mechanics-Physics-Astronomy, 1999
Resume Cette note traite de l'identification modale de structures lineaires a partir de leurs reponses at des essais vibratoires. Le but de la methode d'identification proposee est de permettre une identification directe des fonctions de reponse en frequence a partir du calcul d'une transformation integrale.
Hai Ping Yin, Pierre Argoul
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Modal Identification Using SMIT

The objective of this paper is to introduce a Structural Modal Identification Toolsuite (SMIT) for MATLAB that has been recently developed to facilitate system identification of structural systems. SMIT is an integrated toolbox, supporting a user-friendly Graphical User Interface (GUI) for modal identification.
Minwoo Chang, Shamim N. Pakzad, Rebecca Leonard   +2 more
openaire   +1 more source